Quick answers
- Which hospitals does Thomas E. Greely work at?
- Medicare's official clinician data lists Thomas E. Greely at 1 hospital: Seneca District Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas E. Greely see patients?
- Medicare's clinician data lists 4 practice locations, including Chester, CA and Concord, CA. Call before your visit to confirm the address.
- What is Thomas E. Greely's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Thomas E. Greely accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas E. Greely 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 Thomas E. Greely?
- (530) 258-2067, as listed in official Medicare / NPI Registry data.
- What is Thomas E. Greely's NPI number?
- 1851336820. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas E. Greely works
Medicare's Facility Affiliation Data lists Thomas E. Greely at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Seneca District HospitalChester, CA · Critical Access Hospital · CCN 051327
Practice locations
Addresses where Thomas E. Greely is enrolled with Medicare (CMS data updated 2026-10-02).
- 130 Brentwood DrChester, CA 96020 (530) 258‑2067
- 199 Reynolds Rd, PO Box 737Chester, CA 96020
- 2700 Grant St, Suite 200Concord, CA 94520 (925) 674‑0500
- PO Box, Suite 737Chester, CA 96020
Group practices
Medicare enrollment lists Thomas E. Greely as a member of these groups (CMS data updated 2026-10-02).
- John Muir Physician Network494 clinicians in the group
- Seneca Healthcare District21 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Chester
Clinicians with the same Medicare primary specialty in Chester, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851336820 |
| 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