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

Katherine Ko, NP

Individual provider Family Nurse Practitioner · NPI 1679038103

Katherine Ko, NP is a Family Nurse Practitioner in Diamond Bar, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2019
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

2705 S Diamond Bar Blvd Ste 100
Diamond Bar, CA 91765-3557
Phone: (626) 965-1988
Show map & directions

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

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 95009181 (CA)

Record details

NPI number1679038103
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorYes
NPI enumeratedFebruary 8, 2019
Last updated in NPPESFebruary 8, 2019
Mailing address21233 Corral Ct, Walnut, CA 91789-2031

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