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Paul Koller,

M.D.

Hematologist-Oncologist

5 (71 Ratings)
Biography photo
Location
City of Hope Duarte
1500 East Duarte Road
Duarte, CA 91010
Education
Medical school:

M.D., Medicine, University of Texas, Houston, TX

Residency:

Internal Medicine, Baylor College of Medicine Affiliated Hospitals, Houston, TX

Academic Appointments
  • Assistant Professor, Division of Leukemia, Department of Hematology & Hematopoietic Cell Transplantation
About Me

Paul Koller, M.D., is a leukemia specialist at City of Hope®® in Duarte, California, where he serves as an Assistant Professor in the Department of Hematology and Hematopoietic Cell Transplantation. He is dedicated to improving care for patients with both acute and chronic forms of leukemia through clinical and translational research and personalized treatment. 

With a goal to bring the latest science directly to patients, Dr. Koller focuses on developing new, targeted therapies and treatment combinations that are based on the biology of each patient’s disease. He serves as a primary investigator on several trials for conditions including chronic myeloid leukemia (CML), acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL) and high-risk myelodysplastic syndrome (MDS).

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.
Jul 23, 2026
5.0
"Dr. Koller is an excellent doctor who is patient and gives me time to work through my questions."
Jul 21, 2026
5.0
"I am extremely satisfied with Dr. Koller's care and expertise. I would highly recommend him to anyone."
Jul 21, 2026
5.0
"I can't speak highly enough for all of the personal care and understanding of all of the staff from the time I arrived until I departed. Every one was very caring."
Jun 12, 2026
5.0
"Expert in his area of cancers. I really appreciated that."
Jun 5, 2026
5.0
"All good"
May 10, 2026
5.0
"Dr. Koller is one of the best and most caring physicians I have experienced. Excellent bedside manners too, which is rare to find these days."
May 2, 2026
5.0
"This was my first encounter and I was extremely impressed with your entire facility & caring staff."
May 2, 2026
5.0
"Dr. Koller carefully explained my diagnosis & recommended follow up care. He included me in the decision making regarding my proposed treatment."
Apr 25, 2026
5.0
"Wouldn't hesitate to refer someone."
Apr 25, 2026
5.0
"Yes I wouldn't hesitate to refer someone if it came to helping someone choose a doctor for Cancer treatment. I am so very grateful to have Dr.Koller be the lead Dr for the treatment and remission. He was an angel sent from heaven as I have always seen all those on my team. Thank you to all."
Mar 31, 2026
5.0
"Excellent"
Mar 31, 2026
5.0
"Excellent"
Mar 22, 2026
5.0
"He's the best"
Mar 3, 2026
5.0
"Dr. Koller, [...], and the entire team are amazing. The care I received throughout my treatment has been excellent. I'm very grateful for their professionalism, kindness, and support. Thank you."
Jan 29, 2026
4.9
"Very knowledgeable, informative, and friendly - thanks"