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

Mrs. Karen Isak, RN

Individual provider Certified Registered Nurse Anesthetist · NPI 1174394274

Mrs. Karen Isak, RN is a Certified Registered Nurse Anesthetist (CRNA) in Fresno, California. Qualified in 2025, 1 year ago. Practices with Valley Regional Anesthesia Associates Inc, a 153-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
1
Licensed in
CA
In the registry since
2024
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

20 River Park Pl W Fresno Ca 93720
Fresno, CA 93724-0001
Phone: (916) 202-6761
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 157471 (CA)

Record details

NPI number1174394274
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorNo
NPI enumeratedJanuary 9, 2024
Last updated in NPPESFebruary 10, 2026
Certification dateFebruary 10, 2026

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2025 (1 years in practice)
Group practice Valley Regional Anesthesia Associates Inc — 153 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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