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Dr. Jonathan E. Volk, MD

Internal Medicine (Internal Medicine Physician)

300 Pasteur Dr, S101
Stanford, CA 94305

Who else practices at this address →

Santa Clara County includes mental health (13% of residents) shortage areas. About shortage areas

Call (415) 730-2764

At a glance

Years since graduation
20
In the NPI registry since
2007

Licensed in California since 2007, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 2006Medical school: University of California, San Francisco School of Medicine
  • 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Internal Medicine Physician primary
    CA license A101242 (first issued 2007; current)

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Internal Medicine per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Azithromycin
Other prescribers in Stanford, CA
173
Atorvastatin Calcium
Other prescribers in Stanford, CA
109
Atovaquone-Proguanil Hcl (atovaquone/proguanil hcl)66
Adacel Tdap (diph,pertuss(acell),tet vac/pf)59
Typhim Vi (typhoid vi polysacch vaccine)58
Gabapentin
Other prescribers in Stanford, CA
53
Havrix (hepatitis a virus vaccine/pf)48
Lisinopril
Other prescribers in Stanford, CA
39
Losartan Potassium
Other prescribers in Stanford, CA
29
Biktarvy (bictegrav/emtricit/tenofov ala)29

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Other Internal Medicine clinicians in Stanford

Sources

NPI registry (CMS NPPES, November 2026; record last updated December 15, 2021), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1366622698. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.