Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John Walter Nimtz, MD

Individual provider Family Medicine Physician · NPI 1851341804

John Walter Nimtz, MD is a Family Medicine Physician in Santa Rosa, California. Practices as a sole proprietor and works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1165 Montgomery Dr
Santa Rosa, CA 95405-4801
Phone: (707) 546-3210
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 510 Doyle Park Dr, Santa Rosa, CA 95405-4570 — (707) 303-8366

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence G44002 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence G44002 (CA)

Record details

NPI number1851341804
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 11, 2006
Last updated in NPPESNovember 9, 2021
Certification dateNovember 9, 2021

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients257
Services billed 279 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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