Quick answers
- Which hospitals does Sean Griffiths work at?
- Medicare's official clinician data lists Sean Griffiths at 4 hospitals: Alta Bates Summit Medical Center, Alta Bates Summit Medical Center - Alta Bates Camp…, John Muir Medical Center - Concord Campus and John Muir Medical Center - Walnut Creek Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sean Griffiths see patients?
- Medicare's clinician data lists 8 practice locations, including Walnut Creek, CA, Berkeley, CA and Fremont, CA. Call before your visit to confirm the address.
- What is Sean Griffiths's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Sean Griffiths accept Medicare assignment?
- Yes. Medicare's clinician data says Sean Griffiths 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.
- What is the phone number for Sean Griffiths?
- (925) 939-8585, as listed in official Medicare / NPI Registry data.
- What is Sean Griffiths's NPI number?
- 1457705667. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sean Griffiths works
Medicare's Facility Affiliation Data lists Sean Griffiths at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alta Bates Summit Medical CenterOakland, CA · Acute Care Hospital · CCN 050043
- Alta Bates Summit Medical Center - Alta Bates Camp…Berkeley, CA · Acute Care Hospital · CCN 050305
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · CCN 050496
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · CCN 050180
Practice locations
Addresses where Sean Griffiths is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 2405 Shadelands DrWalnut Creek, CA 94598 (925) 939‑8585
- 2450 Ashby AveBerkeley, CA 94705
- 2450 Ashby Ave, Rm 5505Berkeley, CA 94705 (510) 204‑4444
- 3200 Kearney StFremont, CA 94538 (510) 490‑1222
- 3315 BroadwayOakland, CA 94611 (800) 943‑8099
Group practices
Medicare enrollment lists Sean Griffiths as a member of these groups (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
- Golden State Orthopedics and Spine182 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Touro Un College Of Osteopathic Medicine, Vallejo |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457705667 |
| 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