The Provider Inquiry Department is your primary resource for most unresolved issues. For questions about billing, benefits or eligibility that PARS and web-DENIS can't answer, call Provider Inquiry Monday through Friday.

To save time, please have all records and documentation ready regarding your issue and the steps you've taken to resolve it when you make your call.

Call us

Area code

Phone number

Hours of operation

248, 313, 517,
586, 734, 810, 947, 989
1-800-228-4599 (hospitals)
1-800-437-3804 (facilities)
7:30 a.m. to noon
1 to 4 p.m.
231, 269, 616, 989
(Alcona, Alpena, Crawford,
Iosco, Montcalm, Montmorency,
Ogemaw, Oscoda, Otsego,
Presque Isle and
Roscommon counties)
1-800-643-2583
(hospitals and facilities)
7:30 a.m. to noon
1 to 4 p.m.
906
1-866-872-5837
(hospitals and facilities)
8:30 a.m. to noon
1:05 to 5 p.m.
Outside Michigan
1-800-482-0898
(hospitals and facilities)
7:30 a.m. to noon
1 to 4 p.m.


For questions about Blue Cross Blue Shield of Michigan employees only, contact the Ombudsman office at 1-877-258-0167 from 8:30 a.m. to noon or from 1 to 5 p.m.

Write to us

Area code

Mailing address

248, 313, 517, 734,
810, 947, 989 or outside Michigan
Facility and Special Programs
Provider Inquiry — Mail Code 0301
Blue Cross Blue Shield of Michigan
P.O. Box 33248
Detroit, MI 48232-4248
734, 810, 947, 989 or
outside Michigan
Provider Inquiry
Blue Cross Blue Shield of Michigan
P.O. Box 2227
Detroit, MI 48321-2227
231, 269, 616 Blue Cross Blue Shield of Michigan
P.O. Box 230589
Grand Rapids, MI 49523-0589
906 Provider Inquiry
Blue Cross Blue Shield of Michigan
415 S. McClellan Ave.
Marquette, MI 49855

For questions about Blue Cross Blue Shield of Michigan employees only, write to our Ombudsman office.

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Ombudsman Service Center — Mail Code 0420
Blue Cross Blue Shield of Michigan
600 E. Lafayette Blvd.
Detroit, MI 48226-2998