Quick answers
- Which hospitals does Keith A. Leibowitz work at?
- Medicare's official clinician data lists Keith A. Leibowitz at 4 hospitals: Adventist Health Sonora, Doctors Medical Center, Emanuel Medical Center and John C Fremont Healthcare District. This is where the clinician works or has privileges; call the hospital to confirm.
- What is Keith A. Leibowitz's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Keith A. Leibowitz accept Medicare assignment?
- Yes. Medicare's clinician data says Keith A. Leibowitz 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 Keith A. Leibowitz's NPI number?
- 1083689335. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Keith A. Leibowitz works
Medicare's Facility Affiliation Data lists Keith A. Leibowitz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health SonoraSonora, CA · Acute Care Hospital · CCN 050335
- Doctors Medical CenterModesto, CA · Acute Care Hospital · CCN 050464
- Emanuel Medical CenterTurlock, CA · Acute Care Hospital · CCN 050179
- John C Fremont Healthcare DistrictMariposa, CA · Critical Access Hospital · CCN 051304
Specialties
- Gastroenterologyprimary
Other gastroenterologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083689335 |
| 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