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

MS. Karen Frey, PNP, RN, MS

Individual provider Registered Nurse · NPI 1447302351

MS. Karen Frey, PNP, RN, MS is a Registered Nurse in Oakland, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
Specialties on file
3
What do these letters mean?
PNP — Pediatric Nurse Practitioner
A nurse practitioner specialising in children.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.
MS — Master of Science
A graduate science degree.

See every abbreviation used in this directory →

Practice location Address checks out

280 W Macarthur Blvd
Oakland, CA 94611-5642
Phone: (510) 752-1378
Show map & directions

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

Specialties & licences

Community Health Registered Nurse (primary) Taxonomy 163WC1500X · Licence 35882 (CA)
Registered Nurse Taxonomy 163W00000X · Licence 322238 (CA)
Pediatric Nurse Practitioner Taxonomy 363LP0200X · Licence 14845 (CA)

Record details

NPI number1447302351
Entity typeIndividual (Type 1)
GenderFemale
Credentials PNP , RN , MS
Sole proprietorNo
NPI enumeratedJanuary 18, 2007
Last updated in NPPESSeptember 11, 2025

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