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Raynald Samoa,

M.D.

Endocrinologist

4.9 (189 Ratings)
Biography photo
Location
City of Hope Duarte
1500 East Duarte Road
Duarte, CA 91010
Specialties
Diabetes, Endocrinology and Metabolism
Pediatric Endocrinology
Education
Medical school:
Board Certifications
  • 2008, American Board of Internal Medicine, Adult Endocrinology

  • 2003, American Board of Pediatrics

  • 2003, American Board of Internal Medicine

Degrees
  • 1999, University of Washington, Seattle, WA, M.D.

  • 1994, Western Washington University, Bellingham, WA, B.A.

Fellowship
  • 2007-2008, Childrens Hospital Los Angeles, Los Angeles, CA, Fellowship in Pediatric Endocrinology, Diabetes & Metabolism

  • 2005-2007, University of Southern California Medical Center, Los Angeles, CA, Fellowship in Endocrinology, Diabetes & Metabolism

Residency
  • 2003-2004, Women & Children's Hospital Los Angeles County, Los Angeles, CA, Chief Residency in Pediatrics

  • 2000-2003, University of Southern California Medical Center, Los Angeles, CA, Residency in Combined Internal Medicine and Pediatrics

Professional Experience
  • 2023 - present, Associate Clinical Professor, Department of Diabetes, Endocrinology & Metabolism, City of Hope, Duarte, CA

  • 2008 - 2023, Assistant Professor, Department of Diabetes, Endocrinology & Metabolism, City of Hope, Duarte, CA

  • 2003 - 2008, Clinical Instructor, Pediatrics, University of Southern California Medical Center, Los Angeles, CA

Academic Appointments
  • Associate Clinical Professor, Department of Diabetes, Endocrinology & Metabolism
About Me

Endocrinologist Raynald Samoa, M.D., is board certified in Pediatrics, Internal Medicine and Adult Endocrinology, bringing a well-rounded and thoughtful approach to patient care at City of Hope® Cancer Center Duarte. He completed his adult endocrinology fellowship at the Los Angeles County–University of Southern California. 

Dr. Samoa’s research is primarily focused on how appetite is regulated and how that impacts obesity, particularly in underserved and minority communities. He is passionate about addressing health disparities and helping patients make meaningful, lasting improvements to their health.

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 25, 2025
"Dr. Samoa was clear and direct in the information he provided and the recommendations he made. His assistant, [...], replied promptly to a series of my email questions, and her quick and direct responses were much appreciated."
May 14, 2025
"Dr Samoa is excellent. He considers the patients feelings very well."
Apr 28, 2025
5.0
"Dr. Samoa is very kind and compassionate."
Apr 20, 2025
5.0
"The doctors and nurses are great [...]"
Apr 20, 2025
5.0
"Dr. Samoa is a wonderful doctor, caring and compassionate."
Apr 15, 2025
5.0
"Excellent doctor"
Apr 10, 2025
5.0
"The doctor Samoa was very nice and spent the time to explain and answer all my concerns. Excellent doctor!"
Apr 9, 2025
5.0
"Dr. Samoa is the best doctor I have had. He is super knowledgeable and always puts my concerns to ease."
Apr 4, 2025
4.4
"I love COH."
Feb 21, 2025
4.4
"Very caring, kind, outstanding doctor he is. Always listening to my concerns love his great personality can talk to him openly:)"
Feb 8, 2025
5.0
"Very good provider knowledgeable caring patient and friendly"
Jan 29, 2025
5.0
"Great practice"
Jan 29, 2025
5.0
"Very pleased"
Dec 3, 2024
5.0
"Excellent follow up after visit!"
Dec 3, 2024
5.0
"Dr. Samoa has been my endriconologist for many years. He is knowledgeable, honest, compassionate, empathetic and has helped me to control my diabetes and maintain good control! I am very grateful for his professional care."
Nov 23, 2024
5.0
"Dr Samoa was prepared, thorough, and presented in a clear and interested manner. Excellent service,"
Nov 19, 2024
5.0
"Excellent physician, would not hesitate in referring him to anyone"
Nov 15, 2024
5.0
"Dr. Samoa is excellent. I feel seen, heard and safe."
Nov 11, 2024
5.0
"Dr Samoa is a good doctor"
Oct 10, 2024
5.0
"I love Dr Samoa! He's so great!"
Oct 5, 2024
4.9
"Dr Samoa was excellent and really cared"
Sep 30, 2024
4.9
"Very good experience,"
Sep 30, 2024
4.9
"Customer service was very good, and very patient which I appreciate."
Sep 17, 2024
5.0
"Very pleased"
Sep 12, 2024
5.0
"Excellent Doctor!!!!!!"
Aug 31, 2024
5.0
"Dr Samoa is excellent in his pt care."
Aug 30, 2024
5.0
"Dr Samoa is an awesome doctor"
Aug 30, 2024
5.0
"Dr Samoa has been very helpful. He's kind, very bright, and informative. He shares info with me on my level, I never leave with questions"
Jul 27, 2024
5.0
"Excellent"
Jul 25, 2024
5.0
"All very good thank you"
Jul 25, 2024
5.0
"All very good thank you"
Jul 20, 2024
5.0
"Very good"
Jul 20, 2024
5.0
"Dr Somoa is caring and straight forward with Informing me on my Thyroid issues."
Jul 16, 2024
5.0
"Again, I am and have been very pleased with Dr. Samoa."
Jul 16, 2024
5.0
"I continue to recommend Dr. Samoa and your entire facility to others."
Jul 16, 2024
5.0
"All good."