Johnna Nicole Walker, PA-C
Physician Assistant, Surgical (PA-C) with Regents of the University of California - UCSF and 1 other group, practicing in San Francisco, California. 527 Medicare patients in 2024, $98,267 paid; nearly all of their 772 Part D prescriptions were generic (96%). Pacira Pharmaceuticals Incorporated was the largest of 2 companies reporting payments in 2025, $61.28 in all, mostly food and beverage. Lists California Pacific Medical Center - Mission Bernal and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1497919401 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jul 18, 2008 |
| Last updated in NPPES | Aug 11, 2022 |
| Certified by provider | Aug 11, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Surgical Primary | 363AS0400X | — | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 527 |
|---|---|
| Services billed | 4,809 across 36 procedure codes |
| Paid by Medicare | $98,267 |
Part D prescriptions in 2024
| Prescriptions (claims) | 772 · 776 30-day fills |
|---|---|
| Patients | 300 |
| Total drug cost | $14,767 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical groups
- Regents of the University of California - UCSFSan Francisco, CA · 80 clinicians
- California Pacific Orthopaedics and Sports Medicine A Medical CorporatSan Francisco, CA · 31 clinicians
Hospital affiliations
- California Pacific Medical Center - Mission BernalSan Francisco, CA
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA
- California Pacific Medical Ctr-Davies Campus HospSan Francisco, CA
- Marinhealth Medical CenterGreenbrae, CA
- Novato Community HospitalNovato, CA
Industry payments (Open Payments)
- 2025$61.28 · 2 payments from 2 companies
- 2024$32.29 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pacira Pharmaceuticals Incorporated | $33.46 | 1 |
| Vertex Pharmaceuticals Incorporated | $27.82 | 1 |
What the 2025 payments were for
- Food and Beverage$61.28 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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