This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.
Doctors / CA
PHYSICIAN ASSISTANT
Medical school: TUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated: 2021
NPI: 1336768050
JEFFREY FEINFIELD, M.D. INC
555 MARIN ST, SUITE 100
THOUSAND OAKS, CA 913604102
80549447973
Source: CMS National Downloadable File, September 2026.