Charles D. Lopez M.D., Ph.D.

Photo of Charles D. Lopez, M.D., Ph.D.
Faculty profile

Associate Professor of Medicine School of Medicine

Accepting new patients

4.9 out of 5 (229 Ratings, 75 Comments)


  • Cancer

Special focus on

  • Colorectal Cancer
  • Esophageal Cancer
  • Gastric Cancer
  • Gastrointestinal Cancer
  • Pancreatic Cancer


  • Ph.D., University of California San Francisco California 1990
  • M.D., University of California San Francisco, 0 1991
  • Residency:

    • University of California Medical Center, San Francisco, 1994
  • Fellowship:

    • Medical oncology, Stanford University Medical Center, 1998
  • Certifications:

    • American Board of Internal Medicine, Medical Oncology


As a medical oncologist, my clinical interests are in clinical/translational research in cancers of the digestive system. Our gastrointestinal (GI) oncology team has launched investigator-initiated clinical trials that directly evolved from preclinical observations in the laboratory. We established a highly collaborative basic, translational and clinical research infrastructure at OHSU that is critical for the success of multidisciplinary GI oncology research. My basic and clinical research efforts have allowed me to serve as a key bridge between my clinician colleagues and my basic science colleagues. From this perspective, we have been able to assemble an outstanding team of multidisciplinary investigators that will focus on novel approaches to treating GI cancers. 


  • English

Memberships and associations

  • American Society of Clinical Oncology (ASCO)

Patient Ratings

4.9 out of 5 (229 Ratings, 75 Comments)

The patient ratings score is an average of all responses to the question "How likely would you be to recommend this provider to your family and friends (on a scale of 0 to 10)" on our nationally-recognized NRC patient surveys.

Patient Comments

  • May 01, 2019

    Dr. Lopez and staff provided excellent care for me. I couldn’t be happier.

  • May 01, 2019

    he's a good doctor

  • Apr 25, 2019

    Dr. Lopez and staff are a credit to OHSU.

  • Apr 19, 2019

    Yes, that we thought that the provider was extremely compassionate. He was very thorough, and he spent as much time as he needed, and I think helped us, and we felt so much better after talking to him.

  • Apr 18, 2019

    Everyone was so nice. Very thorough. I feel like I'm in good hands

  • Apr 17, 2019

    He was very knowledgeable listened to and answered our questioned. Made us feel comfortable.

  • Apr 13, 2019

    Dr. Lopez is very knowledgeable. He's a great doctor. He's answers all our questions. He addresses are concerned and his staff are great. Nursing assistant Cynthia is just great and I would recommend them for the particular kind of. Any care for oncology, but for my type of cancer, he and his staff are on the late latest cutting edge and we appreciate him having me as a patient. Thank you.

  • Apr 11, 2019

    Serious, informed, listens, committed to help, solve and cure.

  • Apr 11, 2019

    Dr. Lopez listens to my concerns, shares test results in a clear manner. My experiences at OHSU have been effective and efficient care. Thank you.

  • Apr 05, 2019

    It went well. Everything that I thought needed to be done was talked over. If all the information gets relayed to my other doctors everything should be good. Thank you.

  • Mar 28, 2019

    He listened to my concerns and gave me some alternative treatment choice possibilities, whereas my current doctor had given up and told me to “get into hospice “. I truly appreciated the hope he gave me.

  • Mar 27, 2019

    He was very clear about giving information on my problem and giving answers to the questions that were asked of him.

  • Mar 27, 2019

    Yeah, it's Dr. Lopez. He was here ... be very kind I think he's a really professional doctor and he knows his job very well. I don't know what I can say, but I really like it. My English. It's so poor, but I really liked the doctor. Thank you.

  • Mar 23, 2019

    I was very pleased, excuse me, with the Dr. Lopez, he's been a very pleasant doctor and he's been able to explain, give me information regarding my health care and I would recommend him to anyone. Thank you.

  • Mar 22, 2019

    He answered all my questions and concerns to my satisfaction.

  • Mar 19, 2019

    This was a 6 month follow up visit with Dr. Lopez. He is always thorough in explaining the details of my condition. He asks questions and listens and is compassionate.

  • Mar 16, 2019

    Dr. Lopez is so kind and considerate. He really takes very good care of his patients and he is a person who's always thinking and planning the next steps in your treatment and he's very kind and compassionate.

  • Mar 15, 2019

    Dr. Lopez with competent, kind, thorough, unhurried, supportive, helpful, and hopeful.

  • Mar 14, 2019

    Dr. Lopez is a wonderful, caring physician. Highly recommended.

  • Mar 13, 2019

    He's incredibly smart, curious, and willing to think outside the box. My case is highly unusual, and having a clinician willing to dig into the unknown is invaluable.

  • Mar 07, 2019

    Took time to explain my condition and treatment in a kind and compassionate manner.

  • Mar 03, 2019

    Dr. Lopez was very kind. He asked me questions about my past illness and current conditions, and tried to help me. I appreciated very much.

  • Feb 22, 2019

    Excellent communicator. Clear. Concise. Factual. Explains options and procedures so that the patient understands them.Friendly. Professional.

  • Feb 18, 2019

    Hi, I think Dr. Lopez is very good at his job. He explains everything in detail, and he makes sure that you do understand what he's telling you. I really do like him, and I think he's excellent. Thank you.

  • Feb 16, 2019

    He is clear and concise with advice and treats me like he would his own family. I have trust in his research and the team he associates with.

  • Feb 08, 2019

    I was very impressed with the straight forward, eye contact, and the patience that he took to explain and provide information. However, I haven't heard from him for three days, I heard from Emerson, his assistant, and I assumed they would be letting me know about another test that comes up. At this point, I'm extremely satisfied and wanting to get going on the process. Thank you.

  • Feb 03, 2019

    Dr. Lopez was warm and I found him reassuring.

  • Jan 20, 2019

    Dr. Lopez is so wonderful. I just can't say enough good things about him. He is kind, competent, personable, professional, really cares about me as a patient and I always feel that he has my best interest at heart.

  • Jan 18, 2019

    I felt that Dr. Lopez was very professional very caring willing to answer any questions that I had for him and took his time and I really appreciated that.

  • Jan 17, 2019

    Knowledgeable and really paying attention to my particular situation.

  • Jan 13, 2019

    Dr Lopez is an extremely compassionate physician and makes me feel special as his patient. He took the time to familiarize himself with my case details ( I’m from out of town) before he came in to see me and had multiple options for my treatment plan.

  • Jan 12, 2019

    Dr. Lopez was so helpful and so informative and so kind that we feel very blessed that we had him.

  • Jan 11, 2019

    Great bedside manner. Answered my questions succinctly with good information.

  • Dec 28, 2018

    Of the many doctors I seen, he's one of the best. So everything is positive. Thank you.

  • Dec 27, 2018

    Dr Lopez is a wonderful oncologist. He is caring, attentive to details and patients? personal needs. We. Love and respect him a lot.

  • Dec 27, 2018

    Great bedside manner and a good listener

  • Dec 27, 2018

    I'm very pleased with all my doctor's that try to help me and give me the information I need about my health. And now I know where I stand and I just got to do the best I can and take one day at a time and I had a great experiences with my doctors and I love all my doctors and... and I just don't want nobody to leave me alone... I want... I need my doctor's no matter what and if I have to I guess I have to die in peace, but that's all I could do, but take one day at time and not worry about my cancer and just live day by day with God in my heart.

  • Dec 25, 2018

    Very informative.

  • Dec 21, 2018

    He's a very good doctor. I'm really happy to have him as my doctor.

  • Dec 15, 2018

    Hi, Dr. Lopez is really quite wonderful, very compassionate and very empowered. It was a very difficult meeting has he had a outline the cancer and the treatment plan and I found Dr. Lopez very very compassionate and I'm grateful I clicked it to work with him.

  • Dec 14, 2018

    Yeah. I have met with Dr. Lopez before. I find him extremely helpful and felt very good about explaining everything to me. I was extremely pleased with the service I got there. Thank you.

  • Dec 14, 2018

    Dr. Lopez is one of the most kind and compassionate doctors we have met.

  • Dec 14, 2018

    Very concerned, knowledgable, and professional.

  • Dec 01, 2018

    I really appreciate that Dr. Lopez is aggressive, but cautious, and it's a wonderful time, and wonderful doctor.

  • Nov 29, 2018

    Very easy to talk to, professional and OHSU has been very good to me and I'm blessed

  • Nov 29, 2018

    The doctor listens and explains things real well.

  • Nov 26, 2018

    Dr. Lopez was very professional, understanding, he's a good listener and he is right on the game.

  • Nov 22, 2018

    Dr. Lopez is a mix of a psychedelic Keibler Elf and a prized otter. He has the answers and explains things. I like him more than bacon.

  • Nov 22, 2018

    We came here from Montana and SO IMPRESSED with the efficiency and kindness of everyone. I would suggest that maybe having people around who could direct you or help you would be very beneficial.

  • Nov 16, 2018

    Very good. Dr. Lopez was open, concise, and through.