We're available 24/7. Call us anytime. (888) 552-6760
(888) 552-6760 SCHEDULE AN APPOINTMENT

Maria Olivia Ortiz Castillo,

M.D.

Hospitalist

Biography photo
Location
City of Hope Comprehensive Cancer Center - Duarte
1500 East Duarte Road
Duarte, CA 91010
Specialties
Hospitalist
Education
Medical school:

David Geffen School of Medicine, UCLA, Los Angeles, CA

Residency:

Internal Medicine - Huntington Memorial Hospital, Pasadena, CA

Academic Appointments
  • Assistant Clinical Professor, Division of Hospital Medicine, Department of Medicine
About Me

Maria Olivia Ortiz Castillo, MD, is a board-certified internist at City of Hope® Cancer Center Duarte. In her role as a hospitalist, Dr. Castillo is devoted to delivering exceptional care to hospitalized patients facing serious or complex medical conditions. With over 10 years of experience in medical centers throughout Southern California, Dr. Castillo is passionate about developing thoughtful strategies to enhance patient outcomes and overall quality of care. 

A graduate of the UCLA David Geffen School of Medicine in Los Angeles, Dr. Castillo completed her internship and residency at Huntington Memorial Hospital in Pasadena, California. 

Dr. Castillo values the meaningful connections she builds with her patients and their families. She is proud to be part of City of Hope, where she collaborates with a world-class team advancing innovative therapies. 

“It’s incredibly fulfilling to contribute to an organization that combines cutting-edge science with compassionate care,” she says.

Patient reviews
The patient ratings and comments on this page are obtained from an external Press Ganey® outpatient survey provided to all eligible City of Hope patients within one to two weeks of their treatment occurrence. Raw data from the answers to the survey questions about our physicians are calculated by Press Ganey into a one- to five- star rating. In the spirit of transparency, all patient comments are posted as written by the patient, whether they are positive or negative. We only exclude comments if they are deemed to be slanderous or libelous, contain profanity or vulgar language, or do not relate to the patient's experience with the doctor involved. As a result, the comments are the views and opinions of the patients surveyed and are not endorsed by, and may not necessarily reflect the opinion of, City of Hope.