- ABN Modifiers
- American Medical Association and Current Procedural Terminology
- CMS Forms and Publications
- CMS Regional Offices
- Clinical Lab Improvement Amendment
- Comprehensive Error Rate Testing
- Electronic Health Records
- Electronic Prescribing
- Evaluation and Management Documentation Guidelines
- Federal Register
- Health Insurance Portability and Accountability Act of 1996
- Interactive Voice Response System
- Limitation of Liability (Advance Beneficiary Notice of Noncoverage)
- Local Coverage Determination
- Medically Unlikely Edits
- Medicare Coverage Database
- Medicare Electronic Data Interchange
- Medicare Fraud and Abuse
- Medicare Learning Network®
- Medicare Provider-Supplier Enrollment with NGS
- NGS Internet Resources
- NGSConnex Online Web Application Can Save Time and Money
- NGS Check Provider Enrollment Application Status Tool
- National Correct Coding Initiative
- National Coverage Determination
- National ICD-10-CM-PCS: The Next Generation of Coding
- National Provider Calls and Events
- National Provider Identifier
- National Provider Identifier Registry
- National Uniform Claim Committee
- Open Door Forums
- P.O. Box Mailing Addresses
- Patient Protection and Affordable Care Act of 2010
- Physician Quality Payment Program
- Provider Contact Center
- Provider Enrollment
- Reconsideration (Second Level of Appeal)
- Recovery Audit Program
- Redetermination (First Level of Appeal)
- Skilled Nursing Facility Consolidated Billing
- U.S. Government Printing Office
- Washington Publishing Company
Provider Enrollment
The Provider Enrollment Customer Service Department has direct telephone lines available for provider enrollment inquiries.
Toll-Free Provider Enrollment Numbers
Please use the following toll-free provider enrollment number for your region:
| State | Toll-Free Number | Hours of Service |
|---|---|---|
| JK: Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island and Vermont | 888-379-3807 | Monday–Friday: 8:00 a.m.–4:00 p.m. ET Closed for training on the 2nd and 4th Friday of the month: 12:00–4:00 p.m. ET |
| J6: Illinois, Minnesota, Wisconsin | 877-908-8476 | Monday–Friday: 8:00 a.m.–4:00 p.m. CT Closed for training on the 2nd and 4th Friday of the month: 11:00 a.m.–3:00 p.m. CT |
When to Contact Provider Enrollment
Contact provider enrollment regarding:
- In-depth enrollment issues
- Assistance with the CMS-855 form completion
- Other enrollment-related questions
- Questions pertaining to issues other than the above should be directed to the PCC.
Please have the following information ready when you call so we can help answer your questions as quickly as possible:
- Case number (if assigned)
- PTAN
- NPI
- Section of the application you are questioning (if applicable)
Note: Provider enrollment representatives will only be able to assist those listed as the contact person on the application, the provider themselves and/or the authorized/delegated official for the practice.
Reviewed 10/13/2023