Last Modified: 7/10/2020
Location: FL, PR, USVI
Business: Part A
Q. If the EIDM (enterprise identity management system) help desk is unable to resolve my registration issues, should I call the Medicare administrative contractor (MAC) or Centers for Medicare & Medicaid Services (CMS)?
If you are unable to reach a satisfactory answer with the external user services (EUS) help desk, you should contact your designated MAC representative at the following address: JNPSRRequest@fcso.com
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