Centers for Medicare and Medicaid Services
Find a Medicare Administrative Contractor (MAC)
7500 Security Blvd, Baltimore, MD 21244
Eligibility
Original Medicare Part A and Part B enrollee
Application process
Call 1-800-MEDICARE
((800) 633-4227)
Site Service Area
Nationwide
Other Information
Specialization
- Older adults
- Disabilities
Payment
- Free / no cost to everyone
A private contractor that processes Medicare Part A, Part B Home Health Care or Durable Medical Equipment, Prosthetics, Orthotics and Supplies (DMEPOS) claims for Original Medicare Fee-For-Service (FFS) beneficiaries.
Find your designated Medicare Administrative Contractor (MAC)
Last Update
03/17/2026
Providing organization
Centers for Medicare and Medicaid Services