Thomas Armistead, M.D.
NPI 1912957176 · Psychiatry Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Armistead, M.D. is a Psychiatry Physician provider in Chicago, IL (NPI 1912957176).
Provider details
- NPI number
- 1912957176
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
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
20 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Clozapine | 64 |
| Olanzapine | 54 |
| Benztropine Mesylate | 43 |
| Clonazepam | 41 |
| Bupropion Hclbrand: Bupropion Xl | 41 |
| Gabapentin | 39 |
| Trazodone Hcl | 35 |
| Atorvastatin Calcium | 31 |
| Aripiprazole | 29 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-10
- Last updated
- 2008-03-28
Frequently asked questions
- What is Thomas Armistead's NPI number?
- Thomas Armistead's National Provider Identifier (NPI) is 1912957176, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Armistead's specialty?
- Thomas Armistead is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Armistead located?
- Thomas Armistead's practice location on file with NPPES is 4444 W Montrose Ave, Chicago, IL 60641-2023.
- What is Thomas Armistead's phone number?
- The practice phone number listed in the NPPES registry for Thomas Armistead is (773) 286-0668.
- Does Thomas Armistead accept Medicare?
- Thomas Armistead is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Armistead's NPI active?
- Yes — Thomas Armistead's NPI (1912957176) is active in the NPPES registry as of the last update on 2008-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.