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Ryotaro Nakamura,

M.D.

Hematologist-Oncologist

5 (112 Ratings)
Biography photo
Location
City of Hope Duarte
1500 East Duarte Road
Duarte, CA 91010
Specialties
Hematologic Oncology
Education
Medical school:
Degrees
  • 1991, Kumamoto University School of Medicine, M.D.

Fellowship
  • 1998-2001, Fellow, Hematology/Oncology, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland

Residency
  • 1995-1998, Resident, Thomas Jefferson University Hospital, Philadelphia, PA

  • 1993-1994, Resident and Chief Resident (1994) in Internal Medicine, Iizuka Hospital, Fukuoka, Japan

  • 1991-1993, Resident, Kumamoto University Hospital, Kumamoto, Japan

Professional Experience
  • 2024-2027, Director of Community or Clinical Practice, American Society for Transplantation and Cellular Therapy
  • 2002-current, Staff physician, Division of Hematology/Bone Marrow Transplantation, City of Hope National Medical Center, Duarte, California
  • 2004-2009, Assistant Professor, Division of Hematology/Bone Marrow Transplantation
  • 2008-current, Associate Chair, Cancer Protocol Review and Monitoring Committee
  • 2009-current, Associate Professor, Department of Hematology/HCT
  • 2011-current, Member, Hematologic Malignancies program, City of Hope Comprehensive Cancer Center 
  • 2016-current, Director, HCT Center of City of Hope Hematologic Malignancies Institute
  • 2018-2019, Member, Enterprise Initiative Committee (EIC), City of Hope
  • 2019- current, Professor, Department of Hematology/Hematopoietic Cell transplantation
  • 2021- current, Chair, HCT Quality Management Council 
Academic Appointments
  • Jan & Mace Siegel Professor in Hematology & Hematopoietic Cell Transplantation, Division of Leukemia, Department of Hematology & Hematopoietic Cell Transplantation
  • Director, Center for Stem Cell Transplantation
About Me

Ryotaro Nakamura, M.D., has been a driving force in advancing hematopoietic stem cell transplantation research since joining City of Hope® Cancer Center Duarte, where he serves as director of the Center for Stem Cell Transplantation and holds the Jan & Mace Siegel Professorship in Hematology and Hematopoietic Cell Transplantation. Dr. Nakamura also contributes to research and care across the Hematologic Malignancies and Stem Cell Transplantation Institute, which includes the Judy and Bernard Briskin Center for Multiple Myeloma Research, the Toni Stephenson Lymphoma Center and the Gehr Family Center for Leukemia Research. 

Dr. Nakamura’s research centers on improving immune recovery after transplant and finding better ways to prevent and treat graft-versus-host disease (GVHD). He also has clinical and research expertise in blood cancers and bone marrow failure disorders, including leukemia, aplastic anemia, myelodysplastic syndromes (MDS) and rare conditions such as paroxysmal nocturnal hemoglobinuria and large granular lymphocyte disease. His portfolio includes developing vaccines for transplant patients to protect against cytomegalovirus and COVID-19, testing bi-specific CMV-CD19CAR T cell therapies and exploring microbiome-based strategies to prevent GVHD. He has also led a national clinical trial investigating stem cell transplantation in older adults with MDS, helping define when and for whom transplant is most beneficial. 

Recognized as a leader in both clinical care and scientific innovation, Dr. Nakamura holds several prominent roles within the transplant and cellular therapy community, including serving as co-chair of the Chronic Leukemia Working Committee for the Center for International Blood and Marrow Transplant Research; as a steering committee member for the Blood and Marrow Transplant Clinical Trials Network; and as director of community or clinical practice for the American Society for Transplantation and Cellular Therapy. 

Originally trained in Japan, Dr. Nakamura completed a fellowship in hematology and oncology at the National Institutes of Health in Bethesda, Maryland.

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.
May 1, 2025
5.0
"VERY HELPFUL"
May 1, 2025
5.0
"VERY HELPFUL"
Apr 30, 2025
5.0
"I would give Dr Nakamura an 11 on a scale of 1-10 and gladly recommend him to those in need of his expertise."
Apr 30, 2025
5.0
"Once again the medical practice that Dr Nakamura offers is outstanding. I am under the impression that he is attempting to give me additional options that my already excellent doctors at [...], may not be able to do because of limitations because of my age. [...]"
Apr 30, 2025
5.0
"Dr Nakamura spent a significant amount of time with myself and my partner [...], during this conversation. This [...] follow up, as well as a pending one scheduled at the moment for [...], was impressive and informative. He has indicated that I may have options available with COH that may not be available in the future with [...]. This interests me greatly and I look forward to the [...] meeting with him to discuss further. Dr Nakamura spent a significant amount of time with me the video appt, and the information he shared regarding my unusual condition, has given me additional hope that new methods could be used to help me in my condition."
Apr 28, 2025
5.0
"Dr. Nakamura was very kind and explained everything clearly. I was nervous about my first time at the hospital, but I was able to ask the doctor several questions and he listened to my concerns.I think he is a very good doctor."
Apr 26, 2025
5.0
"He saved my life"
Dec 8, 2024
5.0
"I would highly recommend Dr. Nakamura to others who might have a medical condition similar to mine."
Dec 5, 2024
5.0
"Dr Nakamura is an outstanding doctor in every way! He is always very knowledgable, caring, and professional. I'm 76 years old and he is the best doctor that I have ever had."
Nov 28, 2024
5.0
"Dr Nakamura is the nicest most humble Dr I have ever met. If I was as brilliant as he is I would be to proud of myself to be humble."
Nov 5, 2024
5.0
"I have referred 4 others and will continue to do so as an advocate for Cancer patients"
Oct 17, 2024
4.7
"Dr. Nakamura is extremely knowledgeable and compassionate doctor. He has saved my life."
Oct 6, 2024
5.0
"I am 76 years old with a very rare blood disorder [...]. Dr. Nakamura is by far the best doctor that I have ever had."
Aug 5, 2024
5.0
"Excellent research, analysis, tradeoffs, medical excellence, caring for patient's concerns. Couldn't be better."
Aug 3, 2024
5.0
"Dr. Nakamura is a kind and caring provider. Although he is only a second opinion on my mom's case, he treats us as if we were his patience and always provides useful information and recommendations for us to consider."
Jul 19, 2024
5.0
"Dr. Nakamura is an excellent doctor. Dr. Nakamura & his team coordinated my treatment in an expeditious manner and with that I'm forever great full. I'm always satisfied with the care that I receive."