Warren Timothy Yan, PA-C
Surgical Physician Assistant · Lakewood, CA
Warren Timothy Yan, PA-C is a surgical physician assistant with a practice address in Lakewood, California, and NPI 1730894916, issued on Jan 23, 2023. Check the license (California PA64388, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Warren Timothy Yan
- Credential
- PA-C
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License number
- PA64388 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5750 Downey Ave, Lakewood, CA 90712
- Phone
- (562) 633-3787
- Enumerated
- Jan 23, 2023
- Record last updated
- Aug 7, 2024
- Fax
- (562) 633-1977
- Medicare enrollment
- Enrolled (PECOS I20240815004523); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 1,075 in California → Look up another NPI →
Also registered at 5750 Downey Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Edgar Abbes, DPMPodiatrist1568526689
- Gary Baker, MDInterventional Pain Medicine Physician1437167863
- Michael Castro, MDDermatology Physician1437180320
- Cherie Garcia, MDInternal Medicine Physician1497786396
- Olga Ginzburg, MDInternal Medicine Physician1891723482
- Scott Gordon, MDInternal Medicine Physician1033140801
Verify Warren Timothy Yan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA64388Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average surgical physician assistant in 2024
25 Medicare Part D claims for 18 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
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
- Commons Clinic Medical Group, PCMarina Del Rey, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Warren Timothy Yan among 1,075 surgical physician assistant records in California
Warren Timothy Yan, PA-C is one of 1,075 surgical physician assistant records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 92% of them.
- NPI issued2023 · 92% of these records are older, 4% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2023 · median 2012 among the 649 with a school on file
- Record last updated2024 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Physician Assistant providers in California
There are 1,075 surgical physician assistant records in California.
All 1,075 in California → Every provider in Lakewood → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Jason JanoianLakewood, CA 907121750859302
- Zachary Stone, PA-CLakewood, CA 907121063058436
- Joseph GutierrezBellflower, CA 907061902123912
- Anna Ho, PA-CLos Alamitos, CA 907201710975602
- Christopher Morris, PA-CCerritos, CA 907031750683975
- Juan Alvarado, PA-CNorwalk, CA 906501285963678
- Lonnie Chatman, P.A.La Habra, CA 906311497778591
- Chad Cooper, P.A.La Habra, CA 906311003839879
Common questions
What is Warren Timothy Yan, PA-C's NPI number?
Warren Timothy Yan, PA-C's National Provider Identifier (NPI) is 1730894916, issued on Jan 23, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Warren Timothy Yan, PA-C located?
The NPPES record lists a practice address at 5750 Downey Ave, Lakewood, CA, 90712. Phone: (562) 633-3787. Providers update this record themselves, so call before visiting.
How can I verify Warren Timothy Yan, PA-C's license?
NPPES lists California license number PA64388, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Warren Timothy Yan, PA-C prescribe under Medicare Part D?
In 2024, Warren Timothy Yan, PA-C had 25 Medicare Part D claims for 18 beneficiaries; the average among surgical physician assistant prescribers was 304. 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.