Quick answers
- Which hospitals does Johnna Walker work at?
- Medicare's official clinician data lists Johnna Walker at 5 hospitals: California Pacific Medical Center - Mission Bernal…, California Pacific Medical Center- Van Ness Campus, California Pacific Medical Ctr-Davies Campus Hosp, Marinhealth Medical Center and Novato Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Johnna Walker see patients?
- Medicare's clinician data lists 2 practice locations, including San Francisco, CA. Call before your visit to confirm the address.
- What is Johnna Walker's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Johnna Walker accept Medicare assignment?
- Yes. Medicare's clinician data says Johnna Walker accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Johnna Walker offer telehealth?
- Medicare's clinician data says Johnna Walker offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Johnna Walker?
- (415) 668-8010, as listed in official Medicare / NPI Registry data.
- What is Johnna Walker's NPI number?
- 1497919401. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Johnna Walker works
Medicare's Facility Affiliation Data lists Johnna Walker at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- California Pacific Medical Center - Mission Bernal…San Francisco, CA · Acute Care Hospital · CCN 050055
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA · Acute Care Hospital · CCN 050047
- California Pacific Medical Ctr-Davies Campus HospSan Francisco, CA · Acute Care Hospital · CCN 050008
- Marinhealth Medical CenterGreenbrae, CA · Acute Care Hospital · CCN 050360
- Novato Community HospitalNovato, CA · Acute Care Hospital · CCN 050131
Practice locations
Addresses where Johnna Walker is enrolled with Medicare (CMS data updated 2026-10-02).
- 3838 California St, Rm 516San Francisco, CA 94118 (415) 668‑8010
- 505 Parnassus AveSan Francisco, CA 94143 (415) 476‑1000
Group practices
Medicare enrollment lists Johnna Walker as a member of these groups (CMS data updated 2026-10-02).
- Regents of the University of California - UCSF80 clinicians in the group
- California Pacific Orthopaedics and Sports Medicine a Medical Corporat31 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1497919401 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians