Thomas O'Brien, M.D.
Thomas O'Brien, M.D. holds NPI 1033188545, with a primary taxonomy of internal medicine physician and a practice location in Ann Arbor, MI. The number was issued on March 16, 2006 and the NPPES record was last updated on July 13, 2026.
Taxonomies and licenses
| Taxonomy | Code | License |
|---|---|---|
| Internal Medicine Physician Primary | 207R00000X | 406214 (MI) |
Practice location
Local context
Active NPPES records list 1,372 providers with internal medicine physician as the primary taxonomy within 25 miles of this practice location's ZIP code, 735 of them within 10 miles.
The same primary taxonomy is listed by 7,747 in Michigan and 192,539 nationwide.
These are counts from NPPES records, not a ranking or recommendation. Distances are measured between ZIP code centers, not street addresses.
Nearby providers with the same primary taxonomy
- Alexandra Peirce, MD , Ann Arbor, MI, same ZIP code
- Elisa Ostafin, MD , Ann Arbor, MI, same ZIP code
- Marie Arnaout, DO , Ann Arbor, MI, same ZIP code
- Melanie Donahue, MD , Ann Arbor, MI, same ZIP code
- Sheila Edsall, DO , Ann Arbor, MI, same ZIP code
- Vanessa Wagner, MD , Ann Arbor, MI, same ZIP code
- Ahmed Elkhapery, MBBS , Ann Arbor, MI, about 2 miles
- Ajay Bhasin, MD , Ann Arbor, MI, about 2 miles
Record history
- Name on record
- Thomas Kirk O'Brien
- Status
- Active
- NPI issued
- Last updated in NPPES
Is this your record? Updates are made through NPPES, the official National Plan and Provider Enumeration System.
NPPES data as of · Source: CMS NPPES
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