William Zimmer, MD
NPI 1003885153 · Internal Medicine Physician · Martinsville, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Zimmer, MD is a Internal Medicine Physician provider in Martinsville, VA (NPI 1003885153).
Provider details
- NPI number
- 1003885153
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101-043790 (VA)
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
100% 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 · 175 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 595 | 209 |
| Omeprazole | 486 | 174 |
| Lisinopril | 443 | 142 |
| Alprazolam | 426 | 110 |
| Gabapentin | 407 | 128 |
| Levothyroxine Sodium | 388 | 137 |
| Atorvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2022-08-05
- Certified
- 2022-08-05
Frequently asked questions
- What is William Zimmer's NPI number?
- William Zimmer's National Provider Identifier (NPI) is 1003885153, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Zimmer's specialty?
- William Zimmer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Zimmer located?
- William Zimmer's practice location on file with NPPES is 1107a Brookdale St, Martinsville, VA 24112-4501.
- What is William Zimmer's phone number?
- The practice phone number listed in the NPPES registry for William Zimmer is (276) 634-0379.
- Does William Zimmer accept Medicare?
- William Zimmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Zimmer's NPI active?
- Yes — William Zimmer's NPI (1003885153) is active in the NPPES registry as of the last update on 2022-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.