PECOS Enrollment: Guide to Medicare Provider Enrollment (Avoid the 15 Most Common Errors)

PECOS Enrollment Guide

Every day, healthcare providers lose thousands of dollars in Medicare reimbursements due to preventable PECOS enrollment errors. A single mistake in your Provider Enrollment, Chain, and Ownership System (PECOS) application can delay your Medicare billing privileges by weeks or even months, creating a revenue crisis for your practice.

Whether you’re enrolling for the first time, revalidating your existing enrollment, or troubleshooting a rejected application, this comprehensive guide provides everything you need to navigate PECOS successfully in 2025. Based on insights from processing thousands of Medicare enrollments, we’ll show you exactly how to avoid the costly mistakes that derail most applications.

What is PECOS? Understanding Medicare’s Provider Enrollment System

PECOS (Provider Enrollment, Chain, and Ownership System) is the secure online portal managed by the Centers for Medicare & Medicaid Services (CMS) that allows healthcare providers and suppliers to enroll in the Medicare program, manage their enrollment information, and maintain their billing privileges.

PECOS supports the Medicare Provider and Supplier enrollment process by enabling registered users to submit and manage Medicare enrollment information securely.

Why PECOS Enrollment is Mandatory

The Affordable Care Act, Section 6405, “Physicians Who Order Items or Services Required to be Medicare Enrolled Physicians or Eligible Professionals,” requires physicians or other eligible professionals to be enrolled in the Medicare Program to order or refer items or services for Medicare beneficiaries.

This means even if you don’t bill Medicare directly, you must enroll if you:

• Order diagnostic tests for Medicare patients
• Refer Medicare patients to other providers
• Prescribe medications or medical equipment
• Certify patients for home health services
• Provide any Medicare-covered services

As of January 6, 2014, the Centers for Medicare & Medicaid Services (CMS) began denying claims for Medicare home health services or supplies submitted by physicians not registered in PECOS.

The High Cost of PECOS Non-Compliance

Failing to enroll in PECOS or maintain an active enrollment status has serious consequences:

Financial Impact:

• Medicare denies all claims from unenrolled providers
• No reimbursement for services already provided
• Potential referral denials affecting patient care
• Revenue loss during enrollment delays (average 30-60 days)

Operational Impact:

• Cannot discharge hospital patients requiring home health
• Cannot order diagnostic tests or DME supplies
• Patient care disruptions and delays
• Staff time wasted on troubleshooting enrollment issues

Compliance Risk:

• Billing without proper enrollment = fraud risk
• Potential audit flags and investigations
• License and accreditation implication

Who Must Enroll in PECOS?

Understanding enrollment requirements prevents costly oversights.

Providers Required to Enroll

The following healthcare professionals and entities MUST enroll in PECOS:

Individual Practitioners:

• Physicians (MD, DO)
• Nurse Practitioners (NP)
• Physician Assistants (PA)
• Clinical Nurse Specialists (CNS)
• Certified Nurse Midwives (CNM)
• Clinical Social Workers (CSW)
• Clinical Psychologists
• Physical Therapists (PT)
• Occupational Therapists (OT)
• Speech-Language Pathologists (SLP)
• Chiropractors
• Podiatrists
• Optometrists
• Dentists billing Medicare

Organizational Providers:

• Group practices and medical clinics
• Ambulatory surgical centers (ASC)
• Diagnostic laboratories
• Imaging centers
• Durable medical equipment suppliers (DMEPOS)
• Home health agencies
• Hospice organizations
• Skilled nursing facilities
• Hospitals (for Part B services)

Special Cases:

• As of 2024, physicians who certify or recertify hospice services for Medicare patients are required to be enrolled in PECOS, even if they do not bill Medicare directly
• Physicians providing telemedicine services from home or alternate locations
• Locum tenens physicians working in multiple states

Providers Who May Be Exempt

Limited exemptions exist for:

• Physicians employed by the VA, the Public Health Service, or the Department of Defense
• Providers who have validly opted out of Medicare (with current affidavit on file)
• Interns without medical licenses (supervising physician must be enrolled)

Important Note: Interns are not eligible to enroll in Medicare because they do not have medical licenses. Unless a resident (with a medical license) has an enrollment record in PECOS, he/she may not be identified in a Medicare claim as the Ordering/Referring Provider.

PECOS 2.0: What’s New in 2025

CMS launched significant updates to improve the enrollment experience.

Major PECOS 2.0 Enhancements

CMS launched PECOS 2.0 in late 2023 and into 2024. This enhanced version of the Provider Enrollment, Chain, and Ownership System is designed to simplify the enrollment process, improve transparency, and reduce administrative burden for healthcare professionals and organizations.

Key Improvements Include:

1. Modernized User Interface

• Cleaner, more intuitive navigation
• Mobile-responsive design
• Improved accessibility features
• Contextual help throughout the application

2. Enhanced Integration

• Direct connection with NPPES (National Provider Identifier registry)
• Real-time verification of provider credentials
• Automatic data population from existing records
• Synchronized updates across systems

3. Streamlined Workflows

• Reduced redundant data entry
• Smart form logic that shows only relevant fields
• Progress indicators throughout the application
• Improved document upload functionality

4. Better Transparency

• Real-time application status tracking
• Clearer rejection reasons with specific guidance
• Enhanced communication about missing information
• Estimated processing timeframes

5. Improved Security

• Multi-factor authentication requirements
• Enhanced identity verification
• Secure document transmission
• Better protection against fraud

Types of PECOS Enrollment Applications: CMS-855 Forms Explained

Selecting the correct application form is critical—using the wrong form guarantees rejection.

CMS-855I: Individual Practitioners

Who Uses This Form:

• Physicians
• Non-physician practitioners (NP, PA, CNS, etc.)
• Individual suppliers

Key Sections:

• Personal identifying information
• Practice location addresses
• Specialty information
• License and certification details
• Background disclosure questions
• Reassignment of benefits information

Processing Time: Typically 15 days via PECOS, 30 days for paper applications

CMS-855B: Clinics and Group Practices

Who Uses This Form:

• Multi-physician group practices
• Ambulatory surgical centers
• Comprehensive outpatient rehabilitation facilities
• Rural health clinics
• Independent diagnostic testing facilities

Key Sections:

• Organizational structure and ownership
• Practice locations
• Managing employees
• Authorized official designation
• Organizational provider information
• Billing information

Processing Time: 30-60 days, depending on complexity

CMS-855A: Institutional Providers

Who Uses This Form:

• Hospitals
• Critical access hospitals
• Skilled nursing facilities
• Home health agencies
• Hospice organizations
• Religious non-medical health care institutions

Application Fee: Required for institutional providers (varies annually)

Processing Time: 60-90 days due to complexity and site visits

CMS-855S: DMEPOS Suppliers

Who Uses This Form:

• Durable medical equipment suppliers
• Prosthetics and orthotics suppliers
• Medical supply companies

Special Requirements:

• Surety bond
• Accreditation
• Physical site inspection
• Extensive background checks

Processing Time: 90-120 days

Revalidation Frequency: Every 3 years (more frequent than other provider types)

CMS-855O: Ordering/Certifying Only

Who Uses This Form:

• Providers who order/refer but don’t bill Medicare
• Opted-out physicians who want to order services
• Certifying physicians for hospice, home health, and DME

Key Feature: Abbreviated application—much simpler than other forms

Processing Time: 10-15 days

CMS-855R: Reassignment of Benefits (Now Consolidated)

Medicare has merged the CMS-855R into the CMS-855I paper enrollment application.

Previously separate, reassignment information is now incorporated into the individual practitioner application, streamlining the process for physicians joining group practices.

Step-by-Step PECOS Enrollment Process for 2025

Follow this proven workflow to maximize first-time approval rates.

Phase 1: Pre-Enrollment Preparation (1-2 Weeks)

Step 1: Obtain Your National Provider Identifier (NPI)

Before you can enroll in PECOS, you must have an NPI.

• Apply at https://nppes.cms.hhs.gov
• Processing time: 10 business days for online applications
• No cost to obtain NPI
• Required for all HIPAA-covered entities

Step 2: Gather Required Documentation

Compile all necessary documents before starting your application:

Personal/Professional Documents:

• Current state medical license (all states where you practice)
• DEA certificate (if applicable)
• Board certification certificates
• Professional liability insurance certificate
• CV/resume
• Photo ID (government-issued)
• Social Security card or EIN documentation

Practice/Business Documents:

• IRS CP-575 form (EIN confirmation letter)
• Articles of incorporation or partnership agreement
• Business license
• Facility licenses and certifications
• Accreditation certificates
• Ownership structure documentation
• Medicare Disclosure of Ownership form (if applicable)

Financial Documents:

• Voided check for electronic funds transfer (EFT)
• Bank account information
• Financial statements (for new entities)

Pro Tip: Scan all documents at high resolution (300 DPI minimum) in PDF format before beginning. PECOS requires digital uploads, and poor-quality scans cause delays.

Step 3: Verify Practice Information Consistency

Even minor mismatches between documents (such as NPI registration, practice address, or license information) can cause application delays or rejections.

Create a “source of truth” spreadsheet with:

• Legal business name (exactly as registered with IRS)
• DBA names (if applicable)
• Practice addresses (with ZIP+4 codes)
• Mailing addresses
• Phone and fax numbers
• Email addresses
• TIN/EIN numbers
• NPI numbers
• License numbers and expiration dates

Verify this information matches across:

• NPPES (NPI registry)
• State licensing boards
• IRS records
• CAQH (if enrolled)
• Existing payer contracts

Step 4: Set Up Identity & Access (I&A) Account

The I&A system controls access to PECOS and other CMS systems.

Creating Your I&A Account:

1. Visit https://nppes.cms.hhs.gov
2. Click “Access PECOS” or “Register”
3. Complete identity verification process
4. Set up multi-factor authentication (MFA)
5. Create security questions
6. Establish your User ID and password

Important Security Requirements:

• Passwords must meet CMS complexity standards
• MFA is mandatory for all users
• Account locks after failed login attempts
• Regular password changes are required

Designating Authorized Officials (AO) and Delegated Officials (DO):

• AO: Has signature authority for the organization
• DO: Can prepare applications but may have limited signing authority
• Each role requires separate I&A registration
• Only authorized officials should submit PECOS applications. If an unauthorized person files the paperwork, Medicare will reject it.

Phase 2: Completing Your PECOS Application (2-5 Days)

Step 5: Access PECOS and Start Your Application

1. Log in at https://pecos.cms.hhs.gov
2. Select your enrollment type
3. Choose your applicable Medicare Administrative Contractor (MAC)
4. Indicate whether this is initial enrollment or revalidation

PECOS Smart Technology: A benefit of using PECOS is that its built-in innovative technology automatically pulls the correct forms for completion based on your responses to the initial series of questions.

Step 6: Complete Application Sections Methodically

Section-by-Section Strategy:

Provider Identification:

• Legal name exactly as shown on IRS documents
• NPI number (verify accuracy—common error point)
• Taxonomy codes for all applicable specialties
• Correspondence preferences

Practice Locations:

• Primary practice location (where you spend >50% of time)
• All secondary locations
• Physical addresses (PO boxes not accepted for practice locations)
• Service location descriptions
• Hours of operation
• Accessibility information

License and Certification Information:

• All state licenses where you practice
• License numbers, issue dates, and expiration dates
• Board certifications
• DEA registration
• Specialized certifications (e.g., mammography, CLIA)

Background Information: Answer disclosure questions completely and honestly:

• Criminal history
• License sanctions or limitations
• Medicare/Medicaid exclusions
• Malpractice history
• Felony convictions
• False claims history

Critical: Providers must report a change of ownership or control, a change in practice location, and any final adverse legal actions such as revocations or suspensions of a Federal or State license within 30 days of the reportable change.

Reassignment Information (if applicable):

• Group practice TIN and NPI
• Effective date of reassignment
• Billing arrangements
• Group enrollment verification

Step 7: Upload Supporting Documentation

Best Practices for Document Uploads:

• File size: Keep individual files under 5MB
• Format: PDF preferred (JPEG acceptable for photos)
• Naming: Use clear, descriptive filenames
• Quality: Ensure all text is readable
• Completeness: Upload all pages of multi-page documents
• Currency: Verify documents haven’t expired

Common Upload Errors to Avoid:

• Uploading expired licenses or certificates
• Partial documents (missing pages)
• Illegible scans
• Wrong file formats
• Missing documentation or required documents is one of the most frequent causes of application delays.

Step 8: Review and Electronic Signature

Pre-Submission Checklist:

• All required fields completed
• Information matches source documents exactly
• ZIP+4 codes included for all addresses
• All supporting documents uploaded
• Ownership structure accurately represented
• Background questions answered truthfully
• Contact information current

Electronic Signature Process:

1. Review the certification statement carefully
2. Request PIN for e-signature (now valid for 14 days)
3. Receive PIN via email or SMS
4. Enter PIN to execute signature
5. Confirm application submission
6. Save the confirmation number and PDF copy

PECOS allows providers to securely review information currently on file, update, and submit applications via the Internet. Before submission, upload all required supporting documentation and electronically sign the certification statement. When completed, there is no need for the provider to sign and mail a paper version of the application, certification statement, or supporting documentation.

Phase 3: Application Processing and Follow-Up (15-90 Days)

Step 9: Track Application Status

Monitoring Your Application:

• Log in to PECOS regularly to check the status
• Use the PECOS Application Status Tool
• Watch for development requests (additional info needed)
• Monitor email for MAC communications

Application Status Definitions:

• Submitted: Application received, not yet reviewed
• In Process: Under active review by MAC
• Development: Additional information requested
• Approved: Enrollment complete—billing privileges active
• Rejected: Application denied—see reason codes
• Deactivated: Previously active enrollment terminated

All MACs, including National Government Services, aim to finalize an Internet-based PECOS application within 15 days and a CMS-855 paper application within 30 days, provided all required information is available.

Step 10: Respond to Development Requests Promptly

If the MAC requests additional information:

If additional documentation is needed, a request will be faxed, mailed, or emailed to the contact, with a 30-day response period.

Responding Effectively:

• Review the request immediately—don’t delay
• Provide exactly what’s requested (no more, no less)
• Include your case/application number on all correspondence
• Upload documents directly in PECOS when possible
• Keep copies of everything you submit
• Follow up if you don’t receive acknowledgment within 5 business days

Common Development Requests:

• Updated or additional licenses
• Clarification of ownership structure
• Additional practice location documentation
• Background disclosure details
• Proof of liability insurance
• Site survey or inspection coordination

Step 11: Receive Approval and Verify Billing Privileges

Once approved, you’ll receive:

• Approval letter via mail or email
• Provider Transaction Access Number (PTAN)
• Effective date of enrollment
• Medicare billing privileges activation

Critical Post-Approval Tasks:

1. Verify Your PTAN in PECOS

• Log in and confirm PTAN is active
• Check the effective date
• Verify all locations are included

2. Update Your Practice Management System

• Add PTAN to the billing system
• Configure electronic claim submission
• Test claim submission process
• Verify EDI enrollment with the clearinghouse

3. Notify Relevant Parties

• Billing staff
• Clearinghouse
• Other payers (for coordination of benefits)
• Electronic health record (EHR) vendor

4. Submit Test Claims

• File a few test claims to verify processing
• Monitor for acceptance/rejection
• Resolve any EDI or claims system issues

5. Set Revalidation Reminder. In general, providers and suppliers revalidate every five years, but DMEPOS suppliers revalidate every three years.

Professional PECOS Enrollment Assistance: Medical Billers and Coders (MBC)

Why Choose Professional Enrollment Services?

Navigating PECOS enrollment can be complex and time-consuming, especially for busy healthcare practices. Professional enrollment specialists can save you time, reduce errors, and ensure faster approval.

About Medical Billers and Coders (MBC)

Medical Billers and Coders (MBC) is a leading medical billing company specializing in comprehensive revenue cycle management and provider enrollment services. With over a decade of experience in healthcare administration, MBC has helped thousands of healthcare providers successfully navigate the PECOS enrollment process.

MBC’s PECOS Enrollment Services Include:

Complete Enrollment Management:

• Initial PECOS enrollment applications (all CMS-855 forms)
• Revalidation submissions within required timeframes
• Change of information updates
• Multi-state enrollment coordination
• Group practice and organizational enrollments

Credentialing Support:

• CAQH profile setup and maintenance
• Commercial payer credentialing
• Hospital privileging coordination
• State Medicaid enrollment
• Medicare Advantage plan credentialing

Compliance and Monitoring:

• Revalidation tracking and reminders
• License expiration monitoring
• Background disclosure management
• Ownership change reporting
• 30-day and 90-day change notifications

Expert Guidance:

• Application review before submission
• Error prevention and quality assurance
• Development request management
• Rejection troubleshooting
• Appeals and resubmissions

Why Healthcare Providers Choose MBC:

1. High Success Rate: MBC maintains a 98%+ first-time approval rate for PECOS applications through meticulous attention to detail and comprehensive document verification.
2. Faster Processing: With expert knowledge of MAC requirements and common pitfalls, MBC expedites the enrollment process, typically reducing approval times by 30-40%.
3. Dedicated Support: Each provider is assigned a credentialing specialist who manages the entire enrollment process from start to finish.
4. Technology-Driven: MBC utilizes proprietary enrollment management software that automates data verification, tracks deadlines, and ensures consistency across all enrollment platforms.
5. Cost-Effective: By preventing costly enrollment delays and claim denials, MBC’s services typically pay for themselves through improved revenue cycle efficiency.

MBC’s Comprehensive Medical Billing Services:

Beyond PECOS enrollment, Medical Billers and Coders offers complete revenue cycle management solutions:

• Claims Submission and Management: Electronic claims filing, scrubbing, and submission
• Denial Management: Root cause analysis and appeals processing
• Payment Posting: Accurate and timely payment reconciliation
• Account Receivables: Follow-up on outstanding claims and patient balances
• Coding Services: Certified professional coders for accurate CPT, ICD-10, and HCPCS coding
• Compliance Auditing: Regular audits to ensure billing practices meet regulatory standards
• Reporting and Analytics: Comprehensive financial reports and KPI tracking

Contact Medical Billers and Coders:

For PECOS enrollment assistance or comprehensive medical billing services:

• Website: www.medicalbillersandcoders.com
• Phone: 1-888-357-3226
• Email: info@medicalbillersandcoders.com
• Consultation: Free initial assessment and enrollment complexity review

Medical Billers and Coders serves healthcare providers across all 50 states, specializing in single-provider practices, multi-specialty groups, hospitals, and healthcare systems of all sizes.

The 15 Most Common PECOS Enrollment Errors (And How to Avoid Them)

Based on thousands of processed applications, these errors account for 80% of all PECOS denials and delays.

Error #1: Using Incorrect or Inconsistent Business Names

The Problem: Ensure that the business structure listed on your PECOS application matches the one in your legal documents (e.g., IRS CP-575 or SS-4). Mismatches can result in rejections or delayed processing.

Providers often use:

• DBA name instead of legal name
• Abbreviated versions of the legal name
• Old business names after legal changes
• Informal names not matching IRS records

The Solution:

• Use the exact legal name as shown on the IRS CP-575 form
• Include punctuation exactly as registered (LLC vs LLC).
• Match capitalization precisely
• If using DBA, list it separately in the appropriate field
• Update NPPES if the legal name has changed

Example:

Incorrect: “Smith Medical” (DBA)

Correct: “John Smith Medical Practice, LLC” (legal name) with “Smith Medical” listed as DBA

Error #2: Incomplete or Incorrect ZIP Codes

The Problem: Medicare has emphasized that an incorrect zip code or a failure to include the four-digit extension is cause for rejection.

The Solution:

• Always include ZIP+4 format (12345-6789)
• Use the USPS ZIP Code Lookup tool to verify
• Don’t guess—verify every address
• Update if the practice has moved

Error #3: Missing or Expired Supporting Documents

The Problem: Outdated licenses or certifications can slow down the approval process.

Common missing documents:

• State medical licenses
• DEA certificates
• Liability insurance certificates
• Board certifications
• Facility licenses

The Solution:

• Check expiration dates before uploading
• Renew licenses proactively before enrollment
• Upload clear, complete copies (all pages)
• Monitor license status during processing
• Many providers forget to upload required documents such as malpractice insurance, state licenses, or DEA certificates, which stalls payer credentialing.

Error #4: Incorrect Provider Taxonomy Codes

The Problem: Using the wrong specialty codes or outdated taxonomy codes.

The Solution:

• Verify codes at https://taxonomy.nucc.org
• Select primary taxonomy (where you spend the majority of your time)
• Include all applicable secondary taxonomies
• Update if practice focus changes
• Match taxonomy to license and board certification

Error #5: Ownership Structure Errors

The Problem: Ownership errors can stall your application approval.

Complex ownership structures (corporations, partnerships, LLCs) frequently have:

• Incomplete ownership percentage reporting
• Missing disclosure of 5%+ owners
• Incorrect organizational hierarchy
• Failure to report managing employees

The Solution:

• Document the complete ownership chain
• Include all owners with 5% or greater interest
• Report managing employees accurately
• Provide organizational charts for complex structures
• Disclose any direct or indirect ownership
• Update immediately if ownership changes

Error #6: Inaccurate Reassignment Information

The Problem: For providers joining groups:

• Wrong group TIN/NPI
• Missing reassignment effective dates
• Incomplete group enrollment information
• Double-check that all group affiliations and reassignment sections are completed. Ensure the provider’s NPPES and PECOS data align precisely with the group enrollment

The Solution:

• Verify the group is enrolled in PECOS before submitting
• Use the correct group legal name and TIN
• Specify an accurate and effective date
• Confirm billing arrangements
• Ensure the group has completed their CMS-855B

Error #7: Background Disclosure Omissions or Errors

The Problem: Incomplete or dishonest answers to disclosure questions:

• Failing to report license actions
• Omitting criminal history
• Not disclosing malpractice judgments
• Incomplete felony information

The Solution:

• Answer every question thoroughly and truthfully
• Disclose even if it occurred in another state
• Include details even if the case was dismissed
• Provide explanations when required
• Attach supporting documentation
• Remember: CMS will verify—dishonesty = permanent exclusion

Error #8: Submitting Application Outside Revalidation Window

The Problem: Failing to revalidate on time could result in a hold on your Medicare reimbursement or deactivation of your Medicare billing privileges.

Providers submit revalidations:

• Too early (>7 months before due date) = rejected as unsolicited
• Too late (after due date) = enrollment at risk of deactivation
• Not at all = automatic deactivation

The Solution:

• You can search the Medicare Revalidation List to find a due date for an individual or organizational provider. CMS posts revalidation due dates seven months in advance
• Set calendar reminders 8 months before the due date
• Submit within the 7-month window before the due date
• Monitor the revalidation list regularly
• Don’t wait for a reminder letter—system letters sometimes fail to arrive
• Providers/Suppliers listed on the website with a due date should submit their revalidation applications. Do not wait for a letter. Providers/Suppliers are required to revalidate within their seven-month window

Error #9: Using Unauthorized Signers

The Problem: Only authorized officials should submit PECOS applications. If an unauthorized person files the paperwork, Medicare will reject it. Always confirm that the correct representative is handling your enrollment.

Applications signed by:

• Administrative staff without authority
• Billing companies without delegation
• Practice managers without a proper designation
• Outdated authorized officials

The Solution:

• Designate the authorized official properly in the I&A system
• Document the delegation authority if using a billing company
• Update AO/DO when personnel changes occur
• Keep signature authority documentation current
• Verify signer has an active I&A account

Error #10: Failing to Report Changes Within Required Timeframes

The Problem: Providers must report a change of ownership or control, a change in practice location, and any final adverse legal actions such as revocations or suspensions of a Federal or State license within 30 days of the reportable change.

Changes requiring 30-day reporting:

• Change of ownership or control
• Practice location changes
• License revocations or suspensions
• Final adverse legal actions
• Felony convictions

Changes requiring 90-day reporting:

• Address changes
• Name changes
• Contact information updates
• Managing employee changes

The Solution:

• Log in to PECOS immediately when changes occur
• Submit the change application within required timeframe
• Keep copies of change notifications
• Update NPPES simultaneously with PECOS
• Don’t wait for revalidation to report changes

Error #11: Incomplete I&A System Setup

The Problem: The Identity & Access (I&A) system must be correctly configured to allow access to PECOS.

Common I&A issues:

• Not establishing proper “connections”
• Missing TIN/EIN links
• Incorrect role assignments
• Failed identity verification
• Expired accounts

The Solution:

• Complete the I&A setup before starting the PECOS application
• Establish both Individual and Organizational connections
• Verify TIN/EIN connections are active
• Test access before beginning the application
• Maintain active account status

Error #12: Submitting Wrong Application Type

The Problem: Submitting the wrong form is a standard error when manually submitting forms for a new provider.

Confusion between:

• 855I vs 855O (billing vs ordering only)
• 855B vs 855I (group vs individual)
• Initial enrollment vs revalidation
• Change of information vs new enrollment

The Solution:

• Use PECOS online (auto-selects the correct form)
• Consult MAC if uncertain
• Review form descriptions carefully
• Verify the application type before starting
• Don’t use paper forms unless necessary

Error #13: Typographical and Data Entry Errors

The Problem: Mistyping or incorrectly writing information on a manually completed application is a common mistake that can be avoided.

Common typos:

• Transposed NPI digits
• Misspelled names
• Wrong license numbers
• Incorrect phone numbers
• Invalid email addresses
• Wrong dates

The Solution:

• Double-check every field before submission
• Copy-paste from source documents when possible
• Have a second person review before submitting
• Use a data validation spreadsheet
• The easiest way to eliminate the risk of those errors is to use a source of truth database and software that will automatically populate the fields into PECOS for you

Error #14: Missing Group Practice Locations

The Problem: For providers with multiple practice locations:

• Omitting secondary locations
• Incomplete address information
• Missing service location details
• Not reporting all sites where services are provided

The Solution:

• List every location where you provide services
• Include the complete address for each site
• Specify services provided at each location
• Update when opening/closing locations
• Verify all locations in the approval letter

Error #15: Not Verifying Final Enrollment Status

The Problem: My PECOS enrollment record has been approved, but when I attempt to enroll with EDI, they indicate my provider/supplier is not present in the claims system.

Providers assume approval = immediate billing capability, but:

• Data may not have flowed to the claims system
• PTAN is not active in the EDI system
• Clearinghouse enrollment incomplete
• Effective date not yet reached

The Solution:

• Verify PTAN appears in the claims processing system
• Test EDI connectivity before submitting real claims
• Confirm the effective date has passed
• Check PECOS enrollment status online
• Contact MAC if discrepancies exist after 5 business days
• Use multiple verification methods (PECOS portal, NPPES National Plan and Provider Enumeration System, and MAC confirmation)

PECOS Revalidation: Maintaining Your Medicare Enrollment

Revalidation is not optional—it’s mandatory for maintaining uninterrupted Medicare billing privileges.

Understanding Revalidation Requirements

Revalidation Frequency: In general, providers and suppliers revalidate every five years, but DMEPOS suppliers revalidate every three years. CMS also reserves the right to request off-cycle revalidations.

Provider Type Revalidation Schedule:

• Most providers: Every 5 years
• DMEPOS suppliers: Every 3 years
• Off-cycle revalidations: As requested by CMS (any time)
• SNF providers: Special off-cycle revalidations for 2025-2026

The Revalidation Process

Revalidation is a complete, thorough re-verification of the information in your Medicare enrollment record to ensure it remains accurate and compliant with Medicare regulations. Simply put, revalidation is re-enrollment.

Step 1: Determine Your Revalidation Due Date

• Check the Medicare Revalidation Lookup Tool
• CMS posts revalidation due dates seven months in advance
• Monitor your PECOS account for notifications
• Noridian will also send out a reminder email roughly four months before the due date.

Step 2: Prepare Updated Documentation. First Coast must receive your enrollment application within 60 days of the revalidation request.

Update all documents:

• Current licenses (verify not expired)
• Updated liability insurance
• New certifications or credentials
• Changed ownership or location information
• Updated managing employees

Step 3: Submit Revalidation Application

• Use PECOS for the fastest processing
• Complete all required sections thoroughly
• This is NOT a quick update