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

Mark J Thomson, DO

Individual provider Emergency Medicine Physician · NPI 1598286551

Mark J Thomson, DO is an Emergency Medicine in Grand Rapids, Michigan. Graduated from Michigan State University College of Osteopathic Medicine in 2017, 9 years ago. Practices with Ecs Western Michigan PC, a 201-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
9
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
MI
In the registry since
2017
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

100 Michigan St NE
Grand Rapids, MI 49503-2560
Phone: (616) 391-7130
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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 5101024882 (MI)

Record details

NPI number1598286551
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 29, 2017
Last updated in NPPESNovember 14, 2023
Certification dateNovember 14, 2023

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2017 (9 years in practice)
Group practice Ecs Western Michigan Pc — 201 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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