William Jason, P.A.
Medical Physician Assistant · Irvine, CA
William Jason, P.A. is a medical physician assistant with a practice address in Irvine, California, and NPI 1144252230, issued on Jul 7, 2006. Check the license (California 11102, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Jason
- Credential
- P.A.
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 11102 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2362 Morse Ave, Irvine, CA 92614
- Phone
- (949) 863-9103
- Enumerated
- Jul 7, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 863-1337
- Medicare enrollment
- Enrolled (PECOS I20251204002846); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 2362 Morse Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Jason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 11102Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- American Current Care PAJacksonville, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Jason among 3,376 medical physician assistant records in California
William Jason, P.A. is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 80% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated1979 · median 2012 among the 1,347 with a school on file
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Irvine → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Samantha Cohen, PAIrvine, CA 926141487949251
- Holly Demetrescu, PAIrvine, CA 926121104294305
- Taline Krikorian, PA-CIrvine, CA 926121295050920
- Jenny Luong, RPA-CIrvine, CA 926121316281280
- Evelyn Nguyen, PA-CIrvine, CA 926121063783413
- Angela Waldron, PAIrvine, CA 926121740351451
- Nelson Aguilar, PAIrvine, CA 926181477995504
- Madison CampbellIrvine, CA 926181518773274
Common questions
What is William Jason, P.A.'s NPI number?
William Jason, P.A.'s National Provider Identifier (NPI) is 1144252230, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Jason, P.A. located?
The NPPES record lists a practice address at 2362 Morse Ave, Irvine, CA, 92614. Phone: (949) 863-9103. Providers update this record themselves, so call before visiting.
How can I verify William Jason, P.A.'s license?
NPPES lists California license number 11102, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.