Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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John A Oostema, MD

Individual provider Emergency Medicine Physician · NPI 1265483861

John A Oostema, MD is an Emergency Medicine in Grand Rapids, Michigan. Graduated from Wayne State University School of Medicine in 2004, 22 years ago. Practices with Ecs Western Michigan PC, a 201-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
22
Trained at
Wayne State University School of Medicine
Licensed in
MI
In the registry since
2006
Specialties on file
2
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

100 Michigan St NE
Grand Rapids, MI 49503-2560
Phone: (616) 391-1680
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 4301089762 (MI)
Anesthesiology Physician Taxonomy 207L00000X · Licence 4301089762 (MI)

Record details

NPI number1265483861
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 16, 2006
Last updated in NPPESApril 27, 2012

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Ecs Western Michigan Pc — 201 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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