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

Gary J Birnbaum, MD

Individual provider Geriatric Medicine (Family Medicine) Physician · NPI 1912055807

Gary J Birnbaum, MD is a Geriatric Medicine (Family Medicine) Physician in San Diego, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

4647 Zion Ave
San Diego, CA 92120-2507
Phone: (619) 528-5000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Medicine (Family Medicine) Physician (primary) Taxonomy 207QG0300X · Licence G46249 (CA)

Record details

NPI number1912055807
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 8, 2007
Last updated in NPPESNovember 22, 2021

Other providers in San Diego