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

Individual provider Family Nurse Practitioner · NPI 1245519172

Patricia Thalken Lash, FNP is a Nurse Practitioner in Costa Mesa, California. Qualified in 2011, 15 years ago. Practices with Emergency Physicians of Orange County, a 62-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
15
Licensed in
CA
In the registry since
2011
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

1190 Baker Street 100
Costa Mesa, CA 92659
Phone: (714) 668-2500
Fax: (714) 668-2515
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 20933 (CA)

Record details

NPI number1245519172
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedAugust 9, 2011
Last updated in NPPESAugust 9, 2011

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Emergency Physicians Of Orange County — 62 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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