Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Lia Renee Westhafer, MSPAS, PA-C

Individual provider Physician Assistant · NPI 1174128201

Lia Renee Westhafer, MSPAS, PA-C is a Physician Assistant in Daly City, California. Qualified in 2020, 6 years ago. Practices with Sutter Bay Medical Foundation, a 3,762-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
6
Licensed in
CA
In the registry since
2020
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

901 Campus Dr
Daly City, CA 94015-4900
Phone: (650) 652-8290
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA58933 (CA)

Record details

NPI number1174128201
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSPAS , PA-C
Sole proprietorYes
NPI enumeratedDecember 4, 2020
Last updated in NPPESAugust 2, 2023
Certification dateAugust 2, 2023

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Sutter Bay Medical Foundation — 3762 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients31
Services billed 39 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Sutter Bay Medical Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3762 clinicians in the practice; 12 are shown here.

Other providers in Daly City