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

Dr. Kathryn Joanne Hallsten, MD

Individual provider Internal Medicine Physician · NPI 1184750861

Dr. Kathryn Joanne Hallsten, MD is an Internal Medicine Physician in Portola Valley, California. Practices as a sole proprietor. Licensed in California.

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

130 Portola Rd Ste C
Portola Valley, CA 94028-7825
Phone: (650) 385-1970
Fax: (650) 851-9701
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 G60511 (CA)

Record details

NPI number1184750861
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 26, 2007
Last updated in NPPESJune 4, 2013

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