Medicare Fee-for-Service (CMS)
Credentialing and enrollment guides for Medicare Fee-for-Service (CMS) across 51 states.
Quick Overview
Timeline
45 - 120 days
CAQH
Not Required
Re-credentialing
Every 5 year(s)
States Available
51
About Medicare Fee-for-Service (CMS)
Federal health insurance program. Enrollment via PECOS. CMS-855 forms required. Processed by Medicare Administrative Contractors (MACs).
How to Get Credentialed
Gather Required Documents
Collect all necessary credentials including your medical license, DEA certificate, malpractice insurance, NPI number, and board certifications.
Prepare Your Application
Complete Medicare Fee-for-Service (CMS)'s provider enrollment application with all required information and supporting documentation.
Submit Your Application
Submit your completed enrollment package to Medicare Fee-for-Service (CMS). Select your state below for state-specific submission details.
Track & Follow Up
Credentialing typically takes 45-120 days. Monitor your application and respond promptly to requests for additional information.
Free Consultation
Need help enrolling with Medicare Fee-for-Service (CMS)?
Our specialists handle the entire Medicare Fee-for-Service (CMS) enrollment process: applications, follow-ups, and approvals across all 50 states.
Required Documents
Board Certification
Not required for Medicare enrollment but verified during credentialing
DEA License
Required if applicable
Malpractice Insurance
Medical License
NPI Certificate
Enrollment Forms
CMS-855I — Individual Practitioners
For physicians and non-physician practitioners enrolling as individuals who will bill Medicare directly or reassign benefits to a group.
CMS-855B — Group Practices / Organizations
For group practices, clinics, and organizations billing Medicare for services rendered by employed/contracted practitioners.
CMS-855O — Ordering/Certifying Only
For physicians who ONLY order or certify items/services for Medicare beneficiaries but do NOT bill Medicare directly.
CMS-855S — DMEPOS Suppliers
For suppliers of durable medical equipment, prosthetics, orthotics, and supplies.
CMS-855R — Reassignment of Benefits
Used when an individual practitioner reassigns their billing rights to a group practice.
Contact Information
PECOS Portal
1-866-837-0241
NPPES (NPI)
1-866-837-0241
Revalidation Due Date Checker
1-866-837-0241
Medicare Provider Enrollment
1-866-837-0241
Mon-Fri 8am-6pm ET
Medicare Provider Contact Center
1-855-798-2627
Mon-Fri 8am-6pm local time
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+ 36 more states below
Reviewed by the PayerReady Credentialing Team
Our credentialing specialists verify every article against current CMS regulations, NCQA standards, and payer-specific enrollment requirements. See our editorial process.
Select Your State
Choose your state for Medicare Fee-for-Service (CMS)-specific credentialing details including timelines, contacts, and local requirements.