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

Karen Jean Holdrege, RN, MSN, NP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1255753307

Karen Jean Holdrege, RN, MSN, NP is a Psychiatric/Mental Health Nurse Practitioner in Santa Maria, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2014
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
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

201 S Miller St Ste 103
Santa Maria, CA 93454-5248
Phone: (805) 314-2175
Fax: (805) 314-2175
Show map & directions

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

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 519838 (CA)

Record details

NPI number1255753307
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN , MSN , NP
Sole proprietorYes
NPI enumeratedJanuary 9, 2014
Last updated in NPPESOctober 15, 2021
Certification dateOctober 15, 2021

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