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Gregory Gilmore,

D.O.

Medical Oncologist and Hematologist

4.8 (228 Ratings)
Biography photo
Location
City of Hope Corona
320 West 6th Street
Corona, CA 92882
Specialties
Hematologic Oncology
Medical Oncology
Education
Medical school:

Degrees

  • 2013, Doctor of Osteopathic Medicine, Western University of Health Sciences, Pomona, CA
  • 2007, Bachelor of Science, Biology, University of California Irvine, Irvine, CA

Fellowship

  • 2016–2019, Fellow, Hematology/Oncology, Fresno Medical Education Program, University of California San Francisco, San Francisco, CA

Residency

  • 2014–2016, Residency, Internal Medicine, Fresno Medical Education Program, University of California San Francisco, San Francisco, CA

Internship

  • 2013–2014, Internal Medicine, Fresno Medical Education Program, University of California San Francisco, San Francisco, CA

Professional Experience

  • 2022–present, Assistant Clinical Professor, Department of Medical Oncology & Therapeutics Research, City of Hope, Corona, CA
  • 2019–2021, Attending Physician, Hematology/Oncology, The Oncology Institute of Hope and Innovation, Corona and Riverside, CA
Academic Appointments
  • Assistant Clinical Professor, Department of Medical Oncology & Therapeutics Research
About Me

Gregory Gilmore, DO, is a medical oncologist at hematologist at City of Hope® Corona, where he works closely with patients with a wide range of caner types to craft personalized treatment plans that fit their unique diagnosis and health goals and preserve their quality of life.

Dr. Gilmore values the strong relationships he builds with patients and their families and he’s dedicated to providing expert care with a compassionate approach. He received his medical degree from the Western University of Health Sciences in Pomona, California. He also completed an residency in internal medicine and a hematology-oncology fellowship at the University of California San Francisco’s Fresno Medical Education Program, where he also served as chief fellow.

At City of Hope, Dr. Gilmore is excited to offer patients access to advanced clinical trials that may help them live longer and feel better during treatment and to bringing the latest in cancer therapies into the clinic.

Outside of work, Dr. Gilmore enjoys staying active by playing basketball, skiing, and hiking. He also likes cooking, baking, gardening, and exploring new places.

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.
Mar 13, 2026
5.0
"All staff work very well together for the good of the patients."
Mar 13, 2026
5.0
"Dr Gregory Gilmore cares for me and all his patients with total respect and professionalism. His influence is such that all of the providers and staff are like him."
Feb 28, 2026
5.0
"Good"
Feb 28, 2026
5.0
"Very good experience"
Feb 19, 2026
5.0
"Good"
Feb 19, 2026
5.0
"Good"
Feb 5, 2026
5.0
"Dr. Gilmore is the best!"
Feb 3, 2026
5.0
"I'm very pleased with Dr. Gilmore he is very patient and willing to explain."
Jan 28, 2026
5.0
"Very good doctor"
Jan 28, 2026
5.0
"If I recommend them they are excellent and softening both English and Spanish languages"
Jan 3, 2026
5.0
"The staff let me keep my dignity"
Dec 31, 2025
2.7
"Doesn't explain well"
Nov 5, 2025
5.0
"Thank you, Dr. Gilmore, for your excellent patient care."
Nov 2, 2025
5.0
"It was good"
Nov 2, 2025
5.0
"Totally efficient. I feel like they care about my health."
Oct 27, 2025
5.0
"I have already made recommendations to your facility."
Oct 27, 2025
5.0
"Everyone I have seen at the Facility has been very pleasant and professional, I have already recommended my facility to others I know."
Oct 25, 2025
5.0
"Good"
Oct 25, 2025
5.0
"Good"
Oct 18, 2025
5.0
"I've tried to convey that starting with my providers and then the nurses and MA's and receptionists all are very caring and professional persons."
Oct 2, 2025
5.0
"This place and my providers are amazing. They are all great listeners."
Sep 28, 2025
4.9
"City of Hope is a gift and blessing to so many of us."
Sep 17, 2025
4.9
"Good experience"
Sep 17, 2025
4.9
"Good experience"
Sep 17, 2025
4.9
"Good experience"
Aug 16, 2025
5.0
"I've been responsible for sending patients to City of Hope"
Aug 16, 2025
5.0
"Although he is very truthful in his assessments Dr. Gilmore seems to always have a very good report for me at each visit. This is a result of God and the very professional people like Dr Gilmore."
Aug 8, 2025
4.9
"Dr. Gilmore is a great doctor. He's listens and provides explanations for his logic using good data."
Jul 29, 2025
5.0
"Loved Him,"
Jul 26, 2025
4.9
"City of Hope has been lifesaving. Cannot adequately express how grateful we are to be here."
Jul 18, 2025
4.3
"Very good"
Jul 10, 2025
5.0
"Nothing but good experience"
Jun 20, 2025
5.0
"I sent my brother there because he appears to have lung cancer so please take good care of him like you have me"