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

Mrs. Chelsea Ann O'Brien, FNP

Individual provider Family Nurse Practitioner · NPI 1790244218

Mrs. Chelsea Ann O'Brien, FNP is a Family Nurse Practitioner in Palo Alto, California. Works from 2 locations. Licensed in California and New York.

Licensed in
CA, NY
In the registry since
2019
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

195 Page Mill Rd Ste 103
Palo Alto, CA 94306-2073
Phone: (888) 731-8994
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 139 Centre St, New York, NY 10013-4552 — (888) 731-8994

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 95005693 (CA)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 344156 (NY)

Record details

NPI number1790244218
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedMarch 14, 2019
Last updated in NPPESJune 13, 2025
Certification dateJune 13, 2025

Other providers in Palo Alto