Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Ronald J Rivera, MD

Individual provider Emergency Medical Services (Emergency Medicine) Physician · NPI 1558716233

Ronald J Rivera, MD is an Emergency Medicine in Orange, California. Graduated from University of California, Geffen School of Medicine in 2016, 10 years ago. Practices with Regents of the University Of, a 125-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
10
Trained at
University of California, Geffen School of Medicine
Licensed in
CA
In the registry since
2016
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

333 City Blvd W Ste 640
Orange, CA 92868-5915
Phone: (714) 509-7664
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A169303 (CA)
Emergency Medical Services (Emergency Medicine) Physician Taxonomy 207PE0004X · Licence A169303 (CA)

Record details

NPI number1558716233
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 29, 2016
Last updated in NPPESNovember 30, 2020
Certification dateNovember 30, 2020
Mailing address11420 Santa Monica Blvd Unit 25724, Los Angeles, CA 90025-8845

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Regents Of The University Of — 125 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Orange