Mary Townsend
NPI 1891431946 · Endocrinology, Diabetes & Metabolism Physician · Ann Arbor, MI
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Townsend is a Endocrinology, Diabetes & Metabolism Physician provider in Ann Arbor, MI (NPI 1891431946).
Provider details
- NPI number
- 1891431946
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 5151015624 (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
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 12 |
| Lisinopril | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 4029 Ave Marie DrAnn Arbor, MI 48105Phone: (734) 647-5871
Registry dates
- Enumerated
- 2022-05-11
- Last updated
- 2025-07-11
- Certified
- 2025-06-27
Frequently asked questions
- What is Mary Townsend's NPI number?
- Mary Townsend's National Provider Identifier (NPI) is 1891431946, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Townsend's specialty?
- Mary Townsend is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Townsend located?
- Mary Townsend's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Mary Townsend's phone number?
- The practice phone number listed in the NPPES registry for Mary Townsend is (734) 936-4000.
- Does Mary Townsend accept Medicare?
- Mary Townsend is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Townsend's NPI active?
- Yes — Mary Townsend's NPI (1891431946) is active in the NPPES registry as of the last update on 2025-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.