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Paul Mandelin,

D.O.

Radiation Oncologist

5 (130 Ratings)
Biography photo
Location
City of Hope Corona
320 West 6th Street
Corona, CA 92882
Specialties
Radiation Oncology
Education
Medical school:
  • 2006, Doctor of Osteopathy, Osteopathic Physician and Surgeon, Western University of Health Sciences/College of Osteopathic Medicine of the Pacific, Pomona, CA
Residency:
  • 2010–2011, Chief Resident, Radiation Oncology, USC Norris Comprehensive Cancer Center, Los Angeles, CA
  • 2007–2010, Resident, Radiation Oncology, USC Norris Comprehensive Cancer Center, Los Angeles, CA
Academic Appointments
  • Assistant Clinical Professor, Department of Radiation Oncology
  • Director of Radiation Oncology
About Me

“I treat the patient, not the symptoms,” says Paul Mandelin, D.O., a board-certified radiation oncologist at City of Hope’s Corona community location. “It’s a team approach that helps patients navigate treatment and recovery.”

Dr. Mandelin earned his master’s degree in radiation physics from Finch University of Health Sciences at Chicago Medical School in 2000, followed by his medical degree from Western University College of Osteopathic Medicine of the Pacific in Pomona, California, in 2006. He completed his internship at Arrowhead Regional Medical Center in Colton, followed by residency training in radiation oncology at USC Norris Comprehensive Cancer Center, where he served as chief resident.

Outside of medicine, Dr. Mandelin enjoys trout fishing, staying active, restoring classic cars, and exploring technology — from computers and audio/visual systems to GPS and amateur radio.

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.
Apr 16, 2026
4.6
"I really felt good about the explanation the nurse gave me."
Apr 16, 2026
4.6
"Of course I would recommend the Hospital because it has good staff, in addition to explaining the questions we ask them well."
Oct 24, 2025
4.7
"Have met with an outstanding milieu of efficiency, compassion, and care at the COH. [...]"
Oct 17, 2025
5.0
"Excellent doctor and facility"
Oct 17, 2025
5.0
"Always recommend your facility to family and friends"
Oct 2, 2025
5.0
"Good experience"
Oct 2, 2025
5.0
"Good experience"
Sep 7, 2025
5.0
"I'm very happy with City Of Hope."
Sep 7, 2025
5.0
"I only have good things to say about City Of Hope"
Aug 30, 2025
5.0
"Very good"
Aug 30, 2025
5.0
"I would recommend them 100 percent"
Aug 13, 2025
5.0
"Dr. Mandelin is an excellent physician. I always enjoy talking with him. He is caring and compassionate and knowledgeable."
Jul 25, 2025
5.0
"Outstanding doctors here at Corona"
Jul 25, 2025
5.0
"Already have recommended City of Hope"
Jul 2, 2025
5.0
"Good experience"
Jul 2, 2025
5.0
"Good experience"
Jun 23, 2025
5.0
"Good"
Jun 23, 2025
5.0
"Good"