Quick answers
- Which hospitals does Stephen T. Sigmund work at?
- Medicare's official clinician data lists Stephen T. Sigmund at 2 hospitals: Adventist Health Twin Cities and French Hospital Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen T. Sigmund see patients?
- Medicare's clinician data lists 2 practice locations, including Templeton, CA. Call before your visit to confirm the address.
- What is Stephen T. Sigmund's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Stephen T. Sigmund accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen T. Sigmund 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 Stephen T. Sigmund?
- (805) 734-0729, as listed in official Medicare / NPI Registry data.
- What is Stephen T. Sigmund's NPI number?
- 1700846607. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen T. Sigmund works
Medicare's Facility Affiliation Data lists Stephen T. Sigmund at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health Twin CitiesTempleton, CA · Acute Care Hospital · CCN 050633
- French Hospital Medical CenterSan Luis Obispo, CA · Acute Care Hospital · CCN 050232
Practice locations
Addresses where Stephen T. Sigmund is enrolled with Medicare (CMS data updated 2026-10-02).
- 1051 Las Tablas RdTempleton, CA 93465
- 1310 Las Tablas Rd, Suite 102Templeton, CA 93465 (805) 734‑0729
Group practices
Medicare enrollment lists Stephen T. Sigmund as a member of this group (CMS data updated 2026-10-02).
- David B. Hammer123 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Templeton
Clinicians with the same Medicare primary specialty in Templeton, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Stony Brook, School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700846607 |
| 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