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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

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

Freedom of Information (FOIA)

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

Medical Review Additional Development Requests (ADRs)

J15 – Part A/B Correspondence
CGS Administrators
26 Century Blvd, Suite 610
Nashville, TN 37214

Online Help Center

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

Reopenings

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

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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