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

John Victor Gahagan, MD

Individual provider Surgery Physician · NPI 1558629493

John Victor Gahagan, MD is a General Surgery in Pleasanton, California. Qualified in 2012, 14 years ago. Practices with Stanford Health Care, a 3,085-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
14
Licensed in
CA
In the registry since
2012
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

5725 W Las Positas Blvd Ste 100
Pleasanton, CA 94588-4007
Phone: (925) 734-8130
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5800 Hollis St, Emeryville, CA 94608-2016 — (510) 806-2100

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence A126753 (CA)

Record details

NPI number1558629493
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 29, 2012
Last updated in NPPESJune 11, 2024
Certification dateJune 11, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Stanford Health Care — 3085 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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