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Doctors / CA

RENA D CALLAHAN, MD

HEMATOLOGY/ONCOLOGY

Medical school: PERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA

Graduated: 2004

Also: INTERNAL MEDICINE, SURGICAL ONCOLOGY

Offers telehealth

NPI: 1487856779

Practice Locations (6)

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

757 WESTWOOD PLZ

LOS ANGELES, CA 900958358

3102679643

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

757 WESTWOOD PLZ, SUITE 7501

LOS ANGELES, CA 900958358

3102679643

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

1223 16TH ST

SANTA MONICA, CA 904041217

4242598859

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

1223 16TH ST, SUITE 2101

SANTA MONICA, CA 904041217

4242598859

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

2020 SANTA MONICA BLVD, SUITE 210

SANTA MONICA, CA 904042139

3104582381

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

2336 SANTA MONICA BLVD

SANTA MONICA, CA 904042067

Source: CMS National Downloadable File, September 2026.

RENA CALLAHAN, MD | HealthCareAtlasUSA