Skip to main content

Contact Us

Customer Service

Phone: 877.299.4500

  • Option 1: Claims
  • Option 2: Electronic Data Interchange (EDI)
  • Option 3: Provider Enrollment (PE)
  • Option 4: Overpayment Recovery (OPR)
  • Option 9: General Inquiries

8:00 a.m. – 5:00 p.m. (EST)

Before you call, make sure you have:

  • Your National Provider Identifier (NPI);
  • Your Provider Transaction Access Number (PTAN);
  • The last 5 digits of the provider Tax Identification Number (TIN); and
  • Beneficiary's Medicare ID number, first name, last name and date of birth.

CTI User GuidePDF
Steps in Using the CTI SystemPDF
2020 Customer Service Holiday / Training SchedulePDF

Telecommunications Devices for the Deaf (TTD/TTY)

Phone: 855.294.9889


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 GuidePDF
IVR Beneficiary Name to Number Converter

Development Request (Corrections)

Provider Enrollment Development Requests via Email

Email Address:

Fax: 615.664.5977

If your application requires additional information, you will receive Provider Enrollment correspondence regarding your application, from 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-HHH Provider Enrollment
CGS Administrators, LLC
P.O. Box 20016
Nashville, TN 37202


Overnight Mailing Address

J15-HHH Provider Enrollment
CGS Administrators, LLC
Two Vantage Way
Nashville, TN 37228


Congressional Inquiries

Fax: 615.664.5923


Online Help Center

Home Health & Hospice Online Help Center

Looking for HHH Contact Information? This inquiry tool is designed for Medicare providers. Pleas complete the form and submit the inquiry.

Customer Service Toll Free Number and Option

Provider Enrollment Contact Information

This will help us direct you to the correct department quickly.

Was this page helpful? YES NO

Two Vantage Way, Nashville, TN 37228 © CGS Administrators, LLC. All Rights Reserved