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Jana Portnow,

M.D.

Medical Oncologist

4.7 (44 Ratings)
Biography photo
Location
City of Hope Comprehensive Cancer Center - Duarte
1500 East Duarte Road
Duarte, CA 91010
Specialties
Medical Oncology
Education
Medical school:

University of Rochester School of Medicine, Rochester, NY

Residency:

Chief Resident, Department of Internal Medicine, Temple University Hospital, Philadelphia, PA

Academic Appointments
  • Professor, Department of Medical Oncology & Therapeutics Research
  • Co-Director, Brain Tumor Program
About Me

Renowned neuro-oncologist Jana Portnow, M.D., is a professor of medical oncology and co-director of the Brain Tumor Program at City of Hope® Cancer Center Duarte, where she specializes in pioneering early-phase clinical trials for patients with brain tumors. A dedicated physician-scientist, she has played a key role in shaping novel treatments through innovative clinical research. 

Dr. Portnow has secured substantial funding from the National Institutes of Health (NIH) to advance her work, most notably as co-principal investigator on a major grant that made City of Hope a member of the National Cancer Institute’s Glioblastoma Therapeutics Network – a collaboration between leading cancer institutions focused on developing new therapies for glioma. She has also contributed to national research strategy by serving on the NIH Clinical Oncology Study Section and currently holds the role of vice chair of the National Comprehensive Cancer Network’s guidelines panel for central nervous system cancers. 

Dr. Portnow’s research portfolio includes groundbreaking work on neural stem cells that can deliver therapeutic agents directly to brain tumors. This includes first-in-human studies of therapies such as oncolytic viruses – which are engineered to selectively destroy cancer cells – and CAR T cell therapies delivered into the brain to target aggressive gliomas and metastatic disease. 

Inspired daily by the strength and determination of her patients, Dr. Portnow is deeply committed to improving outcomes for individuals facing brain cancers, recognizing the profound personal and emotional impact of such illnesses. Dr. Portnow earned her medical degree from the University of Rochester in New York state and completed an internal medicine residency at Temple University in Philadelphia, where she also served as chief resident. She completed two fellowships in medical oncology and neuro-oncology at Johns Hopkins Medical Institute in Baltimore.

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 19, 2026
5.0
"Specialty Hospital"
Mar 15, 2026
5.0
"Always a very pleasant experience"
Feb 5, 2026
5.0
"I feel very fortunate to be a patient at COH [...]"
Jan 26, 2026
5.0
"She's excellent!!!!!!"
Jan 1, 2026
5.0
"I really appreciated that Dr. Portnow had taken the time to become familiar with my case. She explained things in depth and in ways that were educational to me."
Oct 28, 2025
5.0
"My Doctor was very informative with me and explaining everything about what is going on on with me and the care I am receiving from City of Hope"
Oct 9, 2025
5.0
"All physicians, nurses and staff are excellent and doing an amazing job. [...]"
Oct 5, 2025
5.0
"Dr. Portnow's communication skills are excellent and she is always upbeat."
Aug 9, 2025
5.0
"Good"
Aug 9, 2025
5.0
"Good"
Aug 9, 2025
5.0
"Good"
Aug 4, 2025
5.0
"[...] The doctor Portnow is good and is always ready to answer questions and discuss with me."
Jul 14, 2025
5.0
"Love Dr. Portnow."
Jul 14, 2025
5.0
"Would have liked a more optimistic feel to visit."
Jun 29, 2025
5.0
"Dr. Portnow is wonderful"