Quick answers
- Which hospitals does Jethro T. Ritter work at?
- Medicare's official clinician data lists Jethro T. Ritter 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 Jethro T. Ritter see patients?
- Medicare's clinician data lists 1 practice location in San Luis Obispo, CA. Call before your visit to confirm the address.
- What is Jethro T. Ritter's specialty?
- Medicare lists Infectious Disease as the primary specialty.
- Does Jethro T. Ritter accept Medicare assignment?
- Yes. Medicare's clinician data says Jethro T. Ritter 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 Jethro T. Ritter?
- (805) 540-0689, as listed in official Medicare / NPI Registry data.
- What is Jethro T. Ritter's NPI number?
- 1457330797. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jethro T. Ritter works
Medicare's Facility Affiliation Data lists Jethro T. Ritter 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 Jethro T. Ritter is enrolled with Medicare (CMS data updated 2026-10-02).
- 1551 Bishop St, Suite 250San Luis Obispo, CA 93401 (805) 540‑0689
Group practices
Medicare enrollment lists Jethro T. Ritter as a member of this group (CMS data updated 2026-10-02).
- J Trees Ritter, DO, Inc3 clinicians in the group
Specialties
- Infectious Diseaseprimary
Other infectious disease doctors in San Luis Obispo
Clinicians with the same Medicare primary specialty in San Luis Obispo, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457330797 |
| 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