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

Karen J. Oishi, RN, GNP, ANP

Individual provider Adult Health Nurse Practitioner · NPI 1932281003

Karen J. Oishi, RN, GNP, ANP is a Nurse Practitioner in Houston, Texas. Qualified in 1998, 28 years ago. Practices with Physicians Referral Service, a 2,727-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
28
Licensed in
TX
In the registry since
2006
Specialties on file
2
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

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Practice location Address checks out

1515 Holcombe Blvd
Houston, TX 77030-4009
Phone: (713) 792-6161
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence 617886 (TX)
Gerontology Nurse Practitioner Taxonomy 363LG0600X · Licence 617886 (TX)

Record details

NPI number1932281003
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN , GNP , ANP
Sole proprietorNo
NPI enumeratedOctober 19, 2006
Last updated in NPPESAugust 20, 2011

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Physicians Referral Service — 2727 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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