Justin Frances Gagnon, PA
Surgical Physician Assistant · San Francisco, CA
Justin Frances Gagnon, PA is a surgical physician assistant with a practice address in San Francisco, California, and NPI 1306402532, issued on May 13, 2019. Check the license (California 57451, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Justin Frances Gagnon
- Credential
- PA
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License number
- 57451 CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 353-1601
- Enumerated
- May 13, 2019
- Record last updated
- Jun 10, 2025
- Medicare enrollment
- Enrolled (PECOS I20200206002580); 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 500 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kwabena Adu-KwartengStudent in an Organized Health Care Education/Training Program1801697784
- Annette Albright, M.D.Psychiatry Physician1750430625
- Abdullah Alshammari, MD, FRCSCOrthopaedic Surgery of the Spine Physician1437982477
- Gulsedef Arslan, DOStudent in an Organized Health Care Education/Training Program1891358297
- Peter Barish, M.D.Internal Medicine Physician1366861379
- Jeffrey Barry, MDOrthopaedic Surgery Physician1598031304
Verify Justin Frances Gagnon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 57451Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average surgical physician assistant in 2024
143 Medicare Part D claims for 12 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D.
Most prescribed
- Posaconazole29 claims
- Valganciclovir Hcl15 claims
- Vemlidy11 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
- Ucsf Dept OF SurgerySan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Justin Frances Gagnon among 1,075 surgical physician assistant records in California
Justin Frances Gagnon, PA 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 2019, is newer than 80% of them.
- NPI issued2019 · 80% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2019 · median 2012 among the 649 with a school on file
- Record last updated2025 · 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 San Francisco → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Shannon Farrell, PASan Francisco, CA 941431417350976
- Patricia Freeman, PASan Francisco, CA 941431396751764
- Julie Gennarino, PASan Francisco, CA 941431346288495
- Gregory James, PASan Francisco, CA 941431912216797
- Jin Kim, JIN KIM PA-CSan Francisco, CA 941431952447625
- Fedna Morency, P.A.-C, ATCSan Francisco, CA 941431013108562
- Cassandra NovakSan Francisco, CA 941431881355618
- Ivan Palacios, PA- CSan Francisco, CA 941431790310449
Common questions
What is Justin Frances Gagnon, PA's NPI number?
Justin Frances Gagnon, PA's National Provider Identifier (NPI) is 1306402532, issued on May 13, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Justin Frances Gagnon, PA located?
The NPPES record lists a practice address at 500 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 353-1601. Providers update this record themselves, so call before visiting.
How can I verify Justin Frances Gagnon, PA's license?
NPPES lists California license number 57451, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Justin Frances Gagnon, PA prescribe under Medicare Part D?
In 2024, Justin Frances Gagnon, PA had 143 Medicare Part D claims for 12 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.