Medical school: UNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduated: 1982
NPI: 1912901471
Practice Locations (3)
R. RUIZ MD A PROFESSIONAL CORPORATION
833 W WHITTIER BLVD
MONTEBELLO, CA 906404735
3237124811
RUBEN RUIZ M D A MEDICAL CORPORATION
403 W F ST
ONTARIO, CA 917623207
9099883288
436 S RIVERSIDE AVE
RIALTO, CA 923766523
9098778668
Source: CMS National Downloadable File, September 2026.