Contact Us

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HAP CareSource™ strives to make it easy for you to work with us, whether online or over the phone.

For questions not addressed on our website, please call Provider Services at 1-833-230-2102.

You can also reach us by contacting one of our Contracting Managers Monday through Friday from 8 a.m. to 6 p.m. Eastern Time (ET).

You can also do business with us online any time of the day or night. Visit the HAP CareSource Provider Portal to check claims, prior authorization status, member eligibility, coordination of benefits and more.

Key Contact Information

Below is a list of the plan’s phone numbers for general questions, prior authorizations, claim inquiries and more, as well as common fax numbers and addresses. Use this list as a guide to help you find the appropriate contact for your questions.

DepartmentPhoneAdditional Information

Provider Services



Medical Prior Authorization



Pharmacy Prior Authorization


Fax: 1-866-930-0019

Physician Administered Drug Prior Authorization


   Fax: 1-888-399-0271



HAP CareSource
P.O. Box 1186
Dayton, OH 45401-1186

Disease Management



Care Management


Referral fax: 1-844-438-9496

Provider Healthy Michigan HRA Submissions

HRA Fax: 1-844-633-0393



Fax: 1-937-396-3492

HAP CareSource
Attn: Grievance & Appeals
P.O. Box 1025
Dayton, OH 45401-1025

Claims, EDI, W-9, Remittance Advice

    • EDI setup
      • Contact your clearing house and give them HAP CareSource’s payor ID: MIMCDCS1

Demographic changes, training & education; contracting & credentialing

For changes in office demographic information, please complete the Provider Change Form.

For requests for provider office training, and contracting and credentialing status:

Please be sure your office address, phone, fax, etc. are up to date in the National Plan & Provider Enumeration System (NPPES). Pharmacy benefit managers typically use Drug Enforcement Agency (DEA) and NPPES systems to send required patient-level notices, such as transition letters and approval or denial letters.