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

Rebecca M. O'Brien, MD

Individual provider Internal Medicine Physician · NPI 1437223757

Rebecca M. O'Brien, MD is an Internal Medicine Physician in Fremont, 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

39400 Paseo Padre Pkwy
Fremont, CA 94538-2310
Phone: (510) 795-3000
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 A76283 (CA)

Record details

NPI number1437223757
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 20, 2006
Last updated in NPPESDecember 13, 2021

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