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Mailing Addresses

Who to Write

Addresses and Additional Information

Customer Service

Written inquiries may be submitted to:
J15 – Part A/B Correspondence
CGS Administrators, LLC
PO Box 20018
Nashville, TN 37202

Email: Online Help Center
Note: DO NOT send Protected Health Information (PHI) or Personally Identifiable Information (PII) via email.

CMS guidelines allow up to 45 business days to respond.

Appeals

Mailing address:
J15 – Part A/B Correspondence
CGS Administrators, LLC
PO Box 20018
Nashville, TN 37202

FedEx/UPS/Certified Mail:
J15 – Part A/B Correspondence
CGS Administrators, LLC
26 Century Blvd STE ST610
Nashville, TN 37214-3685

myCGS

Claims

J15 – Part B/HHH Claims
CGS Administrators, LLC
PO Box 20019
Nashville, TN 37202

Congressional Inquiries

CGS Administrators, LLC
J15 Part A/B Correspondence
PO Box 20018
Nashville, TN 37202

CMS Regional Office

Send feedback about your experiences with CGS to the Centers for Medicare & Medicaid Services (CMS): OPOLE_IFM_CHIKCGP@cms.hhs.gov

Medical Director

Send clinical questions
Earl Berman, MD
Chief Medical Officer, J15 A/B MAC
CGS Administrators, LLC
26 Century Blvd STE ST610
Nashville, TN 37214-3685
Email:  cmd.inquiry@cgsadmin.com

Appeals

J15 – Part A/B Correspondence
CGS Administrators, LLC
PO Box 20018
Nashville, TN 37202

General Inquiries

Freedom of Information (FOIA)

Medical Review Additional Development Requests (ADRs)

Online Help Center

Reopenings

Provider Enrollment

Electronic Funds Transfer (EFT) Authorization Agreement (CMS-588) Form

J15 – Part B Provider Enrollment
CGS Administrators, LLC
PO Box 20017
Nashville, TN 37202

Refund Checks

Kentucky:

CGS Administrators, LLC – Part B Kentucky
PO Box 957065
St. Louis, MO 63195-7065

Overnight Delivery:

CGS Administrators, LLC – Part B Kentucky
Lockbox 957065
3180 Rider Trail South
SL-MO-R1LB
Earth City, MO 63045

Ohio:

CGS Administrators, LLC – Part B Ohio
PO Box 957352
St. Louis, MO 63195-7352

Overnight Delivery:

CGS Administrators, LLC – Part B Ohio
Lockbox 957352
3180 Rider Trail South
SL-MO-R1LB
Earth City, MO 63045

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