NPPES file of Aug 9, 2026

Tom Chow, PA-C

Physician Assistant · Orange, CA

Tom Chow, PA-C is a physician assistant with a practice address in Orange, California, and NPI 1003803115, issued on Oct 4, 2005. Check the license (California PA16324, 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
1003803115
Name
Tom Chow
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
PA16324 CA
Self-reported in NPPES; status is on the state search
Practice location
280 S Main St, Orange, CA 92868
Phone
(714) 634-4567
Enumerated
Oct 4, 2005
Record last updated
Oct 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(714) 634-4569
Medicare enrollment
Enrolled (PECOS I20110111000466); accepts Medicare assignment
Medical or professional school
Stanford University School Of Medicine, 2001
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 280 S Main St

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

  1. Natalie AdairPhysician Assistant1538506134
  2. Hazel Ando, A.T.,C.Athletic Trainer1851336416
  3. Lawrence Barnett, MDOrthopaedic Surgery Physician1386631406
  4. Steven Barnett, MDOrthopaedic Surgery Physician1750378030
  5. Paul Beck, MDOrthopaedic Surgery Physician1356322879
  6. Laura Bertsch, PA-CPhysician Assistant1881283299

Verify Tom Chow 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 PA16324
    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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80% fewer Medicare Part D claims than the average physician assistant in 2024

170 Medicare Part D claims for 106 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 94 claims were for opioids.

  1. Tom Chow170
  2. Specialty average830

Most prescribed

  1. Oxycodone Hcl56 claims
  2. Meloxicam49 claims
  3. Tramadol Hcl23 claims
  4. Hydrocodone-Acetaminophen14 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.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupAnaheim, CA

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

Tom Chow among 14,451 physician assistant records in California

Tom Chow, PA-C 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 99% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2001 · median 2018 among the 7,214 with a school on file
  • Record last updated2021 · 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).

181 physician assistant records list a practice address in Orange

They are 181 of the 13,245 NPPES records with a practice address in Orange, and 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Renee Barton, PAOrange, CA 928681205933371
  2. Michelle Boucher, PAOrange, CA 928681750337895
  3. Kuljinder Dosanjh, P.A.Orange, CA 928681225018237
  4. Valerie George, PA-COrange, CA 928681740362920
  5. Helge Helgesen, PAOrange, CA 928681669541330
  6. Jennifer Judelson, PA-COrange, CA 928681053477216
  7. Vasco Kidd, PAOrange, CA 928681396804019
  8. James Lee, PAOrange, CA 928681487601928

Common questions

What is Tom Chow, PA-C's NPI number?

Tom Chow, PA-C's National Provider Identifier (NPI) is 1003803115, issued on Oct 4, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Tom Chow, PA-C located?

The NPPES record lists a practice address at 280 S Main St, Orange, CA, 92868. Phone: (714) 634-4567. Providers update this record themselves, so call before visiting.

How can I verify Tom Chow, PA-C's license?

NPPES lists California license number PA16324, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Tom Chow, PA-C prescribe under Medicare Part D?

In 2024, Tom Chow, PA-C had 170 Medicare Part D claims for 106 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.