Quick answers
- Which hospitals does Gregory M. Senofsky work at?
- Medicare's official clinician data lists Gregory M. Senofsky at 4 hospitals: Henry Mayo Newhall Hospital, Ridgecrest Regional Hospital, Ronald Reagan UCLA Medical Center and UCLA West Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory M. Senofsky see patients?
- Medicare's clinician data lists 3 practice locations, including Los Angeles, CA, Santa Clarita, CA and Valencia, CA. Call before your visit to confirm the address.
- What is Gregory M. Senofsky's specialty?
- Medicare lists General Surgery as the primary specialty, and also Surgical Oncology.
- Does Gregory M. Senofsky accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory M. Senofsky 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 Gregory M. Senofsky?
- (310) 390-4099, as listed in official Medicare / NPI Registry data.
- What is Gregory M. Senofsky's NPI number?
- 1982792891. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory M. Senofsky works
Medicare's Facility Affiliation Data lists Gregory M. Senofsky at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Henry Mayo Newhall HospitalValencia, CA · Acute Care Hospital · CCN 050624
- Ridgecrest Regional HospitalRidgecrest, CA · Critical Access Hospital · CCN 051333
- Ronald Reagan UCLA Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050262
- UCLA West Valley Medical CenterWest Hills, CA · Acute Care Hospital · CCN 050481
Practice locations
Addresses where Gregory M. Senofsky is enrolled with Medicare (CMS data updated 2026-10-02).
- 200 Medical Plaza, Suite 120Los Angeles, CA 90024 (310) 390‑4099
- 27235 Tourney Rd, Suite 2200Santa Clarita, CA 91355 (661) 255‑9287
- 27235 Tourney Rd, Suite 2400Valencia, CA 91355 (661) 255‑5350
Group practices
Medicare enrollment lists Gregory M. Senofsky as a member of this group (CMS data updated 2026-10-02).
- The Regents of the University of California14 clinicians in the group
Specialties
- General Surgeryprimary
- Surgical Oncologyalso
Other general surgeons in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 1979 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982792891 |
| 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