Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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William Michael Ahrens, MD

Individual provider Family Medicine Physician · NPI 1417994088

William Michael Ahrens, MD is a Family Practice in Grand Rapids, Michigan. Graduated from Michigan State University College of Human Medicine in 2001, 25 years ago. Practices with Advantage Health/Saint Mary's Medical Group, a 494-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
25
Trained at
Michigan State University College of Human Medicine
Licensed in
MI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1471 E Beltline Ave NE Ste 201
Grand Rapids, MI 49525-4548
Phone: (616) 685-8620
Fax: (616) 447-7674
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 4301078260 (MI)

Record details

NPI number1417994088
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 1, 2006
Last updated in NPPESApril 12, 2017
Mailing address1900 44th St Se, Kentwood, MI 49508-5008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 2001 (25 years in practice)
Group practice Advantage Health/Saint Mary'S Medical Group — 494 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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