Provider Enrollment
All providers who serve Medicare patients are required to enroll with Medicare. Providers and Suppliers interested in the most efficient process to enroll or make updates to their enrollment records should do so by submitting their information on-line via the Internet Based PECOS system available at https://pecos.cms.hhs.gov. Please consider electronically signing your application and uploading supporting documents to avoid potential delays and shorten processing times. If providers prefer to use the paper application to enroll or make changes to their Medicare application, please consider accessing the Provider Enrollment Interactive Help Tool to facilitate the application process. Additional helpful information is available through the links listed below. We look forward to assisting you and welcome to CGS Medicare Provider Enrollment!
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Revalidation |
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Contact Us |
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PECOS |
FAQ's |
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Application |
Provider Enrollment Processes |
| What Type of Provider Am I? | ||
| Part B Providers | Part A Providers | |
| Physicians/NPPs/Suppliers | Clinics/Group Practices & Certain Other Suppliers |
Institutional |
Anesthesiology Assistants |
Ambulance Service Suppliers |
Community Mental Health Centers (CMHCs) |
Part A Provider Enrollment Processes |
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Tips to Facilitate the Medicare Enrollment Processes |
Contact Us |
| Customer Service | Phone: 866.276.9558
8:00 a.m. – 5:00 p.m. (EST) |
Before you call, make sure you have:
Steps in Using the CTI System 2017 Customer Service Holiday / Training Schedule |
| Telecommunications Devices for the Deaf (TTD/TTY) | Phone: 855.294.9889 |
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| Interactive Voice Response (IVR) | Phone: 866.289.6501 |
You will need your facility’s NPI, PTAN and the last 5 digits of the provider TIN. IVR User Guide IVR Beneficiary Name to Number Converter |
| Development Request (Corrections) | Link: https://www.cgsmedicare.com/partb |
If your application requires additional information, you will receive Provider Enrollment correspondence regarding your application, from J15.PROVIDER.ENROLLMENT@cgsadmin.com. We encourage you to respond to the development requests using email. When replying, please reply ALL and do not forward. This email account automated and is only monitored for corrections to applications in process. Any emails received that are confirming receipt of your email or general inquiries cannot be addressed. |
| Standard Mailing Address | J15-Part A Provider Enrollment |
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| Overnight Mailing Address | J15-Part A Provider Enrollment |
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| Congressional Inquiries | Fax: 615.664.5923 |
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| Online Help Center | Link: |
Looking for Part B Contact Information? This inquiry tool is designed for Medicare providers. Please complete the form and submit the inquiry. |
| Customer Service Toll Free Number and Option | Link: https://www.cgsmedicare.com/partb/ |
This will help us direct you to the correct department quickly. |
Helpful Links:
- CGS Provider Enrollment Frequently Asked Questions (FAQs)
- CGS Revalidation Initiative FAQs
- Checking the Status of Your Application
- CMS 855A Medicare Enrollment Application

- Effective Date of Certified Provider or Supplier Agreement or Approval
- Provider Enrollment Development Request via Email
- Provider Enrollment Review Process
- Revalidation: Getting Started

- Revalidation Sample Envelope
- Revalidation Sample Letter

- Revalidation Checklist

- Revalidation FAQs

- SE1605 MLN Matters Article: Provider Enrollment Revalidation – Cycle 2

Updated: 07.03.17

