William James Prentice, PHYSICIAN ASSISTANT
Surgical Physician Assistant · Pasadena, CA
William James Prentice, PHYSICIAN ASSISTANT is a surgical physician assistant with a practice address in Pasadena, California, and NPI 1285969543, issued on Oct 5, 2009. Check the license (California PA 15229, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William James Prentice
- Credential
- PHYSICIAN ASSISTANT
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License number
- PA 15229 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1119 E Elizabeth St, Pasadena, CA 91104
- Phone
- (213) 422-4162
- Enumerated
- Oct 5, 2009
- Record last updated
- Oct 5, 2009 (not updated in 17 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 1,075 in California → Look up another NPI →
Verify William James Prentice in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA 15229Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average surgical physician assistant in 2024
161 Medicare Part D claims for 107 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone24 claims
- Azithromycin17 claims
- Paxlovid12 claims
- Albuterol Sulfate Hfa11 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.
William James Prentice among 1,075 surgical physician assistant records in California
William James Prentice, PHYSICIAN ASSISTANT 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 2009, is newer than 45% of them.
- NPI issued2009 · 45% of these records are older, 51% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2009 · 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 Pasadena → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Judy Dubko, P.A.-CPasadena, CA 911051720564974
- Amanda Pettus, PA-CPasadena, CA 911051144692237
- Cassie Rodriguez-Feo, PA-CPasadena, CA 911051194376129
- Michael Nadzhafov, CRNAGlendale, CA 912021568605236
- Nara Sargsian, PA-CGlendale, CA 912041538316799
- Armine Bislamyan, PA-CGlendale, CA 912061396466835
- Mara Coyne, PA-CGlendale, CA 912061902852155
- Jennifer McGovern, PA-CGlendale, CA 912061659865525
Common questions
What is William James Prentice, PHYSICIAN ASSISTANT's NPI number?
William James Prentice, PHYSICIAN ASSISTANT's National Provider Identifier (NPI) is 1285969543, issued on Oct 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is William James Prentice, PHYSICIAN ASSISTANT located?
The NPPES record lists a practice address at 1119 E Elizabeth St, Pasadena, CA, 91104. Phone: (213) 422-4162. Providers update this record themselves, so call before visiting.
How can I verify William James Prentice, PHYSICIAN ASSISTANT's license?
NPPES lists California license number PA 15229, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does William James Prentice, PHYSICIAN ASSISTANT prescribe under Medicare Part D?
In 2024, William James Prentice, PHYSICIAN ASSISTANT had 161 Medicare Part D claims for 107 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.