Gregory M. Senofsky, MD
About This Business
Gregory M. Senofsky, MD, is a surgical oncologist in Valencia, California, with 47 years of experience since graduating from Baylor College of Medicine in 1979, above the 26-year average among the 39 Valencia physicians in our directory. He also lists surgical oncology as a secondary specialty. Registered with the national provider registry since 2006, he holds an active California license. His Medicare profile lists mastectomy and Melanoma (skin cancer) excision as his most frequent procedures. He is affiliated with Henry Mayo Newhall Hospital, Ronald Reagan UCLA Medical Center, UCLA West Valley Medical Center, and Ridgecrest Regional Hospital. He accepts Medicare; telehealth is not listed among his services. Patients rate him 4.9 across 39 reviews.
Verified Provider Info
- Specialty (per registry)
- Surgery, Surgical Oncology
- NPI Number
- 1982792891
- Medical school graduate
- 1979 (47+ years of practice)
- Medical school
- BAYLOR COLLEGE OF MEDICINE
- State license
- A42817 (CA)
- Hospital affiliations
- Henry Mayo Newhall Hospital · Ronald Reagan Ucla Medical Center · Ucla West Valley Medical Center
- Common services (Medicare data)
- Mastectomy · Melanoma (skin cancer) excision
Source: NPPES NPI Registry (CMS) · CMS Doctors & Clinicians dataset · checked 2026-08-18
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Information last updated: August 23, 2026
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