Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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William Robert Mathias, PA-C

Individual provider Physician Assistant · NPI 1285806323

William Robert Mathias, PA-C is a Physician Assistant in San Marcos, California. Qualified in 2022, 4 years ago. Practices with Neighborhood Healthcare, a 152-clinician group and accepts Medicare assignment. Licensed in California and Illinois.

Years since qualifying
4
Licensed in
CA, IL
In the registry since
2008
Specialties on file
2
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

150 Valpreda Rd
San Marcos, CA 92069-2973
Phone: (760) 736-6767
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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 59627 (CA)
Physician Assistant Taxonomy 363A00000X · Licence 085.004666 (IL)

Record details

NPI number1285806323
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorNo
NPI enumeratedMarch 28, 2008
Last updated in NPPESMarch 28, 2023
Certification dateMarch 28, 2023
Mailing address814 Hinman Ave Unit 1, Evanston, IL 60202-2360

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Group practice Neighborhood Healthcare — 152 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in San Marcos