William Zimmer, MD
Internal Medicine Physician · Martinsville, VA
William Zimmer, MD is an internal medicine physician with a practice address in Martinsville, Virginia, and NPI 1003885153, issued on Mar 14, 2006. Check the license (Virginia 0101-043790, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- William Zimmer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101-043790 VA
Self-reported in NPPES; status is on the state search - Practice location
- 1107A Brookdale St, Martinsville, VA 24112
- Phone
- (276) 634-0379
- Enumerated
- Mar 14, 2006
- Record last updated
- Aug 5, 2022
- Medicaid ID
- 006093418 VA
- Medicare enrollment
- Enrolled (PECOS I20080829000439); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1986
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,599 in Virginia → Look up another NPI →
Also registered at 1107A Brookdale St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shyam Balakrishnan, M.DFamily Medicine Physician1780996736
- Linda Buchanan, MDInternal Medicine Physician1609844711
- Martha ColeFamily Medicine Physician1265858161
- Paul Eason, MDInternal Medicine Physician1851369375
- Valenica Eggleston-Clark, MDFamily Medicine Physician1316069933
- Twana Jaff, M.D.Internal Medicine Physician1912130584
Verify William Zimmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101-043790Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.5 times the Medicare Part D claims of the average internal medicine physician in 2024
14,448 Medicare Part D claims for 1,522 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 388 claims were for opioids.
Most prescribed
- Amlodipine Besylate595 claims
- Omeprazole486 claims
- Lisinopril443 claims
- Alprazolam426 claims
- Gabapentin407 claims
- Levothyroxine Sodium388 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
2 hospitals and group practices
- Carilion Giles Community HospitalMartinsville, VA · Critical Access Hospitals4 of 5 stars
- Oandw EnterprisesStanleytown, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
William Zimmer among 3,599 internal medicine physician records in Virginia
William Zimmer, MD is one of 3,599 internal medicine physician records with a practice address in Virginia. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1986 · median 2003 among the 2,234 with a school on file
- Record last updated2022 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 internal medicine physician records list a practice address in Martinsville
They are 9 of the 499 NPPES records with a practice address in Martinsville, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Martinsville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Caren Aaron, M.D.Martinsville, VA 241121477538734
- Linda Buchanan, MDMartinsville, VA 241121609844711
- Paul Eason, MDMartinsville, VA 241121851369375
- Zujajah Hassan, M.D.Martinsville, VA 241121952362618
- Twana Jaff, M.D.Martinsville, VA 241121912130584
- Venkata Kondisetti, M.D.Martinsville, VA 241121376867788
- William Lewis, MDMartinsville, VA 241121487623583
- James McKay, M.D.Martinsville, VA 241121487681169
Common questions
What is William Zimmer, MD's NPI number?
William Zimmer, MD's National Provider Identifier (NPI) is 1003885153, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Zimmer, MD located?
The NPPES record lists a practice address at 1107A Brookdale St, Martinsville, VA, 24112. Phone: (276) 634-0379. Providers update this record themselves, so call before visiting.
How can I verify William Zimmer, MD's license?
NPPES lists Virginia license number 0101-043790, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Zimmer, MD prescribe under Medicare Part D?
In 2024, William Zimmer, MD had 14,448 Medicare Part D claims for 1,522 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.