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

Thomas Kirk O'Brien, MD

Individual provider Internal Medicine Physician · NPI 1033188545

Thomas Kirk O'Brien, MD is an Internal Medicine Physician in Ann Arbor, Michigan. Licensed in Michigan. Registered with an NPI since 2006.

Licensed in
MI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

6276 Jackson Rd Ste B
Ann Arbor, MI 48103-9579
Phone: (734) 663-4490
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 406214 (MI)

Record details

NPI number1033188545
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 16, 2006
Last updated in NPPESJuly 13, 2026

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