Stephen Christopher Woo, PA-C
Medical Physician Assistant · San Gabriel, CA
Stephen Christopher Woo, PA-C is a medical physician assistant with a practice address in San Gabriel, California, and NPI 1609912690, issued on Jan 29, 2007. Check the license (California PA18159, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephen Christopher Woo
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA18159 CA
Self-reported in NPPES; status is on the state search - Practice location
- 438 East Las Tunas Dr., San Gabriel, CA 91776
- Phone
- (626) 289-5461
- Enumerated
- Jan 29, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Verify Stephen Christopher Woo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA18159Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average medical physician assistant in 2024
116 Medicare Part D claims for 94 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
Most prescribed
- Meloxicam36 claims
- Cephalexin12 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.
Stephen Christopher Woo among 3,376 medical physician assistant records in California
Stephen Christopher Woo, PA-C 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 2007, is newer than 20% of them.
- NPI issued2007 · 20% of these records are older, 68% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- 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 San Gabriel → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Julie Barron, M.S., P.A.-C.San Gabriel, CA 917761366844318
- Theresa Truong, PASan Gabriel, CA 917761760498919
- Jason Agustin, PA-CSan Gabriel, CA 917751861637274
- Arthur Amanfo, PA-CSan Dimas, CA 917731457688699
- Madhulika Singh, P.A.-CSan Dimas, CA 917731841253200
- Jessica Uhl, PA-CSan Dimas, CA 917731497860126
- Sandy Yokota, PA-CSan Dimas, CA 917731740473198
- Brandon Lew, PA-CRosemead, CA 917701407263288
Common questions
What is Stephen Christopher Woo, PA-C's NPI number?
Stephen Christopher Woo, PA-C's National Provider Identifier (NPI) is 1609912690, issued on Jan 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Christopher Woo, PA-C located?
The NPPES record lists a practice address at 438 East Las Tunas Dr., San Gabriel, CA, 91776. Phone: (626) 289-5461. Providers update this record themselves, so call before visiting.
How can I verify Stephen Christopher Woo, PA-C's license?
NPPES lists California license number PA18159, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Stephen Christopher Woo, PA-C prescribe under Medicare Part D?
In 2024, Stephen Christopher Woo, PA-C had 116 Medicare Part D claims for 94 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.