Quick answers
- Which hospitals does Jeff M. Hamman work at?
- Medicare's official clinician data lists Jeff M. Hamman at 1 hospital: Kaiser Foundation Hospital So Sacramento. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jeff M. Hamman see patients?
- Medicare's clinician data lists 1 practice location in Elk Grove, CA. Call before your visit to confirm the address.
- What is Jeff M. Hamman's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Jeff M. Hamman accept Medicare assignment?
- Yes. Medicare's clinician data says Jeff M. Hamman 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 Jeff M. Hamman?
- (916) 478-5000, as listed in official Medicare / NPI Registry data.
- What is Jeff M. Hamman's NPI number?
- 1972706315. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jeff M. Hamman works
Medicare's Facility Affiliation Data lists Jeff M. Hamman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaiser Foundation Hospital So SacramentoSacramento, CA · Acute Care Hospital · CCN 050674
Practice locations
Addresses where Jeff M. Hamman is enrolled with Medicare (CMS data updated 2026-10-02).
- 9201 Big Horn BlvdElk Grove, CA 95758 (916) 478‑5000
Group practices
Medicare enrollment lists Jeff M. Hamman as a member of this group (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Elk Grove
Clinicians with the same Medicare primary specialty in Elk Grove, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972706315 |
| 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