NPPES file of Aug 9, 2026

Chad Viriya Ith, PAC

Physician Assistant · Santa Clara, CA

Chad Viriya Ith, PAC is a physician assistant with a practice address in Santa Clara, California, and NPI 1932170578, issued on Jan 31, 2006. Check the license (California PA18527, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1932170578
Name
Chad Viriya Ith
Credential
PAC
Primary taxonomy
Physician Assistant 363A00000X
License numbers
PA18527 CA
001611 CT
Self-reported in NPPES; status is on the state search
Practice location
710 Lawrence Expy, Santa Clara, CA 95051
Phone
(408) 851-1850
Enumerated
Jan 31, 2006
Record last updated
Jan 11, 2022
Fax
(408) 851-1871
Medicaid ID
004236007 CT
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 710 Lawrence Expy

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

  1. Iype Abraham, M.D.Internal Medicine Physician1578737243
  2. Oren Abramson, MDPediatric Gastroenterology Physician1265511307
  3. Jamie Adiarte, PA-CPhysician Assistant1073824413
  4. Sarah Adut, PHDClinical Psychologist1609484831
  5. Najla Ahmadzia, M.D.Student in an Organized Health Care Education/Training Program1568692580
  6. Farhana Ahmed, MDHospitalist Physician1215110002

Verify Chad Viriya Ith 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 PA18527
    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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89% fewer Medicare Part D claims than the average physician assistant in 2024

90 Medicare Part D claims for 31 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.

  1. Chad Ith90
  2. Specialty average830

Most prescribed

  1. Cilostazol31 claims
  2. Lidocaine-Prilocaine15 claims
  3. Clopidogrel14 claims
  4. Pentoxifylline12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Chad Viriya Ith among 14,451 physician assistant records in California

Chad Viriya Ith, PAC is one of 14,451 physician assistant records with a practice address in California. 75% 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 1% of them.

  • NPI issued2006 · 1% of these records are older, 87% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 50% of these records are
  • Record last updated2022 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Physician Assistant providers in California

There are 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Rose Abendroth, P.A-C PHDSanta Clara, CA 950511568471126
  2. Jamie Adiarte, PA-CSanta Clara, CA 950511073824413
  3. Cristina Akbari, PA-C FNPSanta Clara, CA 950511750439071
  4. Ashika Atienza, PA-CSanta Clara, CA 950511942455464
  5. Mike Baker, PA-CSanta Clara, CA 950511588729115
  6. Claire Ballard, PA-CSanta Clara, CA 950511326110693
  7. Racquel Cua, P.A.-CSanta Clara, CA 950511174533905
  8. Erin Dobler, PA-CSanta Clara, CA 950511558539700

Common questions

What is Chad Viriya Ith, PAC's NPI number?

Chad Viriya Ith, PAC's National Provider Identifier (NPI) is 1932170578, issued on Jan 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Chad Viriya Ith, PAC located?

The NPPES record lists a practice address at 710 Lawrence Expy, Santa Clara, CA, 95051. Phone: (408) 851-1850. Providers update this record themselves, so call before visiting.

How can I verify Chad Viriya Ith, PAC's license?

NPPES lists California license number PA18527, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Chad Viriya Ith, PAC prescribe under Medicare Part D?

In 2024, Chad Viriya Ith, PAC had 90 Medicare Part D claims for 31 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions 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.