NPPES file of Aug 9, 2026

William G. Ayoub, PA-C

Physician Assistant · Santa Ana, CA

William G. Ayoub, PA-C is a physician assistant with a practice address in Santa Ana, California, and NPI 1619774304, issued on Feb 28, 2025. Check the license (California PA66058, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1619774304
Name
William G. Ayoub
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
PA66058 CA
Self-reported in NPPES; status is on the state search
Practice location
5 Hutton Centre Dr Ste 950, Santa Ana, CA 92707
Phone
(855) 434-7763
Enumerated
Feb 28, 2025
Record last updated
Aug 12, 2025
Medicare enrollment
Enrolled (PECOS I20250428002598); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5 Hutton Centre Dr Ste 950

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sage Alossi, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1487477840
  2. Marisol Barraza, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1407618481
  3. Dana Brannigan, MS, PA-CMedical Physician Assistant1467598318
  4. Gabrielle Carter, RN, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1245062736
  5. Jonathan Day, RN, CRNP, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1306508502
  6. Nathalie De Vera, PA-CMedical Physician Assistant1366131591

Verify William G. Ayoub in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA66058    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. J M Geiss DO ApcSanta Clarita, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

124 physician assistant records list a practice address in Santa Ana

They are 124 of the 8,904 NPPES records with a practice address in Santa Ana, and 14,451 physician assistant records in California.

All 124 in Santa Ana → All 14,451 in California → Every provider in Santa Ana →

Other physician assistant records in California

  1. Marcia -Galbraith, PAStockton, CA1407143274
  2. Danny Abad, PAOrange, CA1477158673
  3. Lea Dominique Abadies, PATustin, CA1124754254
  4. Rea Elizabeth Abaniel, P.A.-CSeal Beach, CA1396173621
  5. Ramina Abbasi, PA-CSignal Hill, CA1093448300
  6. Ariel Abbott, PA-CStockton, CA1780334342
  7. Barrie Abbott, PA-CAnza, CA1861602575
  8. Elizabeth Abbott, PA-CSan Diego, CA1437540762
  9. Terri Abbott, P.A.La Jolla, CA1811165566
  10. Angela Abboud, MMS, PA-CSanta Rosa, CA1114399334

Common questions

What is William G. Ayoub, PA-C's NPI number?

William G. Ayoub, PA-C's National Provider Identifier (NPI) is 1619774304, issued on Feb 28, 2025. An NPI identifies a provider in billing; it is not a license.

Where is William G. Ayoub, PA-C located?

The NPPES record lists a practice address at 5 Hutton Centre Dr Ste 950, Santa Ana, CA, 92707. Phone: (855) 434-7763. Providers update this record themselves, so call before visiting.

How can I verify William G. Ayoub, PA-C's license?

NPPES lists California license number PA66058, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.