Quick answers
- Which hospitals does Edwin S. Hayashi work at?
- Medicare's official clinician data lists Edwin S. Hayashi at 4 hospitals: Adventist Health Sierra Vista, Adventist Health Twin Cities, French Hospital Medical Center and Marian Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Edwin S. Hayashi see patients?
- Medicare's clinician data lists 2 practice locations, including San Luis Obispo, CA and Pismo Beach, CA. Call before your visit to confirm the address.
- What is Edwin S. Hayashi's specialty?
- Medicare lists General Surgery as the primary specialty, and also Vascular Surgery.
- Does Edwin S. Hayashi accept Medicare assignment?
- Yes. Medicare's clinician data says Edwin S. Hayashi 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 Edwin S. Hayashi offer telehealth?
- Medicare's clinician data says Edwin S. Hayashi offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Edwin S. Hayashi?
- (805) 546-0411, as listed in official Medicare / NPI Registry data.
- What is Edwin S. Hayashi's NPI number?
- 1295797397. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Edwin S. Hayashi works
Medicare's Facility Affiliation Data lists Edwin S. Hayashi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health Sierra VistaSan Luis Obispo, CA · Acute Care Hospital · CCN 050506
- Adventist Health Twin CitiesTempleton, CA · Acute Care Hospital · CCN 050633
- French Hospital Medical CenterSan Luis Obispo, CA · Acute Care Hospital · CCN 050232
- Marian Regional Medical CenterSanta Maria, CA · Acute Care Hospital · CCN 050107
Practice locations
Addresses where Edwin S. Hayashi is enrolled with Medicare (CMS data updated 2026-10-02).
- 77 Casa St, Suite 103San Luis Obispo, CA 93405 (805) 546‑0411
- 921 Oak Park Blvd, Suite 201Pismo Beach, CA 93449 (805) 546‑0411
Group practices
Medicare enrollment lists Edwin S. Hayashi as a member of this group (CMS data updated 2026-10-02).
- Associated Surgeons of San Luis Obispo12 clinicians in the group
Specialties
- General Surgeryprimary
- Vascular Surgeryalso
Other general surgeons in San Luis Obispo
Clinicians with the same Medicare primary specialty in San Luis Obispo, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1295797397 |
| 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