HealthCareAtlasUSA

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

RAGU SIVARAJAN, DO

INTERNAL MEDICINE

Graduated: 2013

NPI: 1902246523

Practice Locations (2)

1304 W HOLT BLVD, SUITE A

ONTARIO, CA 917623640

9093303939

INPATIENT SPECIALISTS OF CALIFORNIA PC

1805 MEDICAL CTR DR

SAN BERNARDINO, CA 924111217

9098876333

Source: CMS National Downloadable File, September 2026.

RAGU SIVARAJAN, DO | HealthCareAtlasUSA