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

Dr. Gerald S. Besses, MD

Individual provider Internal Medicine Physician · NPI 1124047311

Dr. Gerald S. Besses, MD is an Internal Medicine Physician in Petaluma, California. Practices as a sole proprietor. Licensed in California.

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

124 Sunny Hill Dr
Petaluma, CA 94952-4749
Phone: (707) 658-2799
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G22553 (CA)

Record details

NPI number1124047311
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 19, 2006
Last updated in NPPESJuly 8, 2007
Mailing address124 Sunny Hill Dr, Petaluma, CA 94952-4749

Other providers in Petaluma