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University of Michigan Health Plan (UM Health Plan), formerly known as PHP Medicare, is winding down operations as of December 31, 2025.
Providers are encouraged to submit claims, appeals, and prior authorizations promptly.
PHP Medicare Provider

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Mailing Address for Customer Service, Medical Claims, Appeals & Grievances:
P.O. Box #7119
Troy, MI 48007

Contracting Information

PO Box 30377
Lansing, MI 48909-7877

Questions Relating to Registration and Login:
ProviderRelations@UofMHealthPlan.org

Questions Relating to Application Access or General Questions:
1-866-397-2812 | customersupport@lumeris.com
8am - 5pm CST / Monday - Friday

For UM Health Plan Claims, Eligibility or Patient Referral Inquiries:
844-529-3757 | CustomerService@UofMHealthMedicare.org
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