Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Sean Thomas McGavin, DO

Individual provider Emergency Medicine Physician · NPI 1639217896

Sean Thomas McGavin, DO practises Emergency Medicine in Muskegon, Michigan. Graduated from Michigan State University College of Osteopathic Medicine in 2003, 23 years ago. Practices with Lake Michigan Observation Services PLLC, a 32-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
23
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
MI
In the registry since
2007
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

1700 Clinton St
Muskegon, MI 49442-5502 Not confirmed with CMS for 16 years — call before visiting
Phone: (231) 728-4601
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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 5101015575 (MI)

Record details

NPI number1639217896
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedFebruary 1, 2007
Last updated in NPPESAugust 19, 2010

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 2003 (23 years in practice)
Group practice Lake Michigan Observation Services Pllc — 32 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients250
Services billed 305 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Lake Michigan Observation Services PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 32 clinicians in the practice; 12 are shown here.

Other providers in Muskegon