Justin Gagnon, PA
NPI 1306402532 · Surgical Physician Assistant · San Francisco, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Gagnon, PA is a Surgical Physician Assistant provider in San Francisco, CA (NPI 1306402532).
Provider details
- NPI number
- 1306402532
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- 57451 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Posaconazole | 29 |
| Valganciclovir Hcl | 15 |
| Tenofovir Alafenamidebrand: Vemlidy | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 2823 Fresno StFresno, CA 93721-1324Phone: (559) 459-3770
- 300 Pasteur DrStanford, CA 94305-2200Phone: (650) 723-4000Fax: (559) 443-2681
Registry dates
- Enumerated
- 2019-05-13
- Last updated
- 2025-06-10
- Certified
- 2025-06-10
Frequently asked questions
- What is Justin Gagnon's NPI number?
- Justin Gagnon's National Provider Identifier (NPI) is 1306402532, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Gagnon's specialty?
- Justin Gagnon is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Justin Gagnon located?
- Justin Gagnon's practice location on file with NPPES is 500 Parnassus Ave, San Francisco, CA 94143-2203.
- What is Justin Gagnon's phone number?
- The practice phone number listed in the NPPES registry for Justin Gagnon is (415) 353-1601.
- Does Justin Gagnon accept Medicare?
- Justin Gagnon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Gagnon's NPI active?
- Yes — Justin Gagnon's NPI (1306402532) is active in the NPPES registry as of the last update on 2025-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.