William Gribbin, MD
NPI 1932840931 · Student in an Organized Health Care Education/Training Program · Ann Arbor, MI
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Gribbin, MD is a Student in an Organized Health Care Education/Training Program provider in Ann Arbor, MI (NPI 1932840931).
Provider details
- NPI number
- 1932840931
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
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
83% 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 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Umeclidinium Bromidebrand: Incruse Ellipta | 12 |
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)
- 2215 Fuller RdAnn Arbor, MI 48105-2303Phone: (734) 769-7100
Registry dates
- Enumerated
- 2022-04-05
- Last updated
- 2026-05-14
- Certified
- 2026-05-14
Frequently asked questions
- What is William Gribbin's NPI number?
- William Gribbin's National Provider Identifier (NPI) is 1932840931, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Gribbin's specialty?
- William Gribbin is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is William Gribbin located?
- William Gribbin's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is William Gribbin's phone number?
- The practice phone number listed in the NPPES registry for William Gribbin is (734) 936-4000.
- Does William Gribbin accept Medicare?
- William Gribbin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Gribbin's NPI active?
- Yes — William Gribbin's NPI (1932840931) is active in the NPPES registry as of the last update on 2026-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.