Thomas Hartwig, M.D.
NPI 1982865382 · Psychiatry Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Hartwig, M.D. is a Psychiatry Physician provider in Ann Arbor, MI (NPI 1982865382).
Provider details
- NPI number
- 1982865382
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301092465 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (2)
- 400 Hobart StCadillac, MI 49601-2331Phone: (231) 935-6380
- 1105 Sixth StTraverse City, MI 49684-2345Phone: (231) 935-6380
Registry dates
- Enumerated
- 2008-06-19
- Last updated
- 2026-01-26
- Certified
- 2026-01-26
Frequently asked questions
- What is Thomas Hartwig's NPI number?
- Thomas Hartwig's National Provider Identifier (NPI) is 1982865382, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Hartwig's specialty?
- Thomas Hartwig is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Hartwig located?
- Thomas Hartwig's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Thomas Hartwig's phone number?
- The practice phone number listed in the NPPES registry for Thomas Hartwig is (734) 615-0199.
- Does Thomas Hartwig accept Medicare?
- Thomas Hartwig is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Hartwig's NPI active?
- Yes — Thomas Hartwig's NPI (1982865382) is active in the NPPES registry as of the last update on 2026-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.