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

Dr. Gerald Alan Gellin, MD

Individual provider Dermatology Physician · NPI 1407827405

Dr. Gerald Alan Gellin, MD is a Dermatology Physician in San Francisco, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
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

3838 California St Ste 805
San Francisco, CA 94118-1522
Phone: (415) 668-2400
Fax: (415) 668-6940
Show map & directions

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

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence C20774 (CA)

Record details

NPI number1407827405
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 28, 2006
Last updated in NPPESJuly 13, 2026

Other providers in San Francisco