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 (237 Ratings, 48 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)

Clinical Trials

The following clinical trials are currently accepting new participants:

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Patient Ratings

4.9 out of 5 (237 Ratings, 48 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

  • 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.

  • Nov 15, 2018

    Dr. Lopez is very good about spending adequate time with you. He listens to what you have to say. He gives you feedback. He explains everything explicitly so there's no gray areas. You understand what's going on, and he's very attentive and I feel that he's doing a very good job.

  • Nov 09, 2018

    Dr. Lopez is wonderful. He is so careful with us. He took a lot of time to explain very carefully what are the possibilities, options and so on. He's so personable and cares about be so deeply. I am really deeply grateful to him for being my physician.

  • Nov 09, 2018

    Dr Lopez makes us feel important, and we can say we trust him. Important in this day and age, when it's not always the case your doctor truly cares.

  • Oct 13, 2018

    Doctor Lopez cares about his patients and works with us to provide good care.

  • Oct 12, 2018

    Dr. Lopez interpreted test results in a clear manner. He answered my questions.

  • Sep 12, 2018

    By far my favorite provider. Always patient with all of my questions and provides thorough answers. He is honest and compassionate. He has a very nice disposition.

  • Sep 12, 2018

    Dr. Lopez is extremely caring, a good listener and always willing to spend time. He is direct and informative, providing a clear picture and outlook for patients.

  • Sep 12, 2018

    Dr Lopez is the best care anyone could ever have!

  • Sep 07, 2018

    We were very pleased to visit with Dr. Lopez. He was very knowledgeable *

  • Sep 07, 2018

    Asked good questions and when questioned gave clear answers

  • Aug 31, 2018

    The doctor listens very well to my questions and has very good answers

  • Aug 23, 2018

    Our experience at OHSU, Knight Center, has been very professional, and treating us with kindness.The team is like a family to us.Dr. Lopez, Cynthia, Julia, Josh, all the wonderful Nurses, etc.are gifted with professionalism and treating us with dignity and grace.

  • Aug 18, 2018

    Every visit with Hero Lopez ends in confidence about the next step. I all questions which are complex and he has immediate logical conclusions to my concerns which indicates he has already through the twists and turns of my case with other colleagues and researchers. This appointment was especially important because I'm at a surgical and chemo junction.

  • Aug 15, 2018

    Dr. Lopez is easy to understand as he explains his answers to my questions. I feel he listens carefully to what I ,my husband and daughter ask him to explain. I feel very comfortable to be working with him as my cancer care provider.

  • Aug 14, 2018

    Dr. Lopez conveys confidence and compassion. He's a good listener, and takes the time to answer your questions. I feel like I made a good choice in continuing with Dr. Lopez through my treatment.

  • Aug 09, 2018

    Dr. Lopez is such a kind and compassionate doctor. I am so grateful to be his patient!

  • Aug 08, 2018

    I was a little bit late and he accepted me and I thought that was great and he seemed like a really nice guy and very truthful with me about stuff and I like that I appreciate somebody telling me the truth about things than try to hide it from me and I respect him for that so I like the visit with Dr. Charler Lopez that's all I can say about that I liked it.

  • Aug 01, 2018

    Dr. Lopez does an excellent job of explaining medical things he is sensitive, he listens, he answers questions clearly but without any talking down to the patient and I have rarely met a medical professional who has that wonderful combination of medical expertise and not just good bedside manner but a real ability to connect with the patients. I'm very, very impressed with him.

  • Aug 01, 2018

    Dr. Lopez was very informative and was fully aware of my medical problems and history.

  • Jul 31, 2018

    This doctor was the most explaining doctor that there was and I've seen a bunch of them.

  • Jul 19, 2018

    He provided very clear, concise explanations of the clinical trial and answers to my questions. He is surrounded by a competent and easy to work with support team.

  • Jul 12, 2018

    Dr. Lopez is an excellent provider. He listens very well. He made changes that my husband needed to help him have no side effects during his chemotherapy and we trust him very much.

  • Jul 10, 2018

    very good

  • Mar 20, 2018

    I don't recommend Lopez because he's MY doctor... Lopez is a special man. there's not enough space here to express my condolences to the other oncologists for their poor attention to be as AMAZING as Charles Lopez. please give the Oncology nurses gigantic raises because I'm not an easy patient to deal with. there's no better place right now for me to beat cancer. I've done it once and I'm doing it again right now as I type.

  • Mar 14, 2018

    Amazing doctor.

  • Nov 07, 2017

    one of the two providers was very familiar with the long detailed history. he even gave us details about treatment saying that we seem to like lots of information. true and appreciated

  • Sep 11, 2017

    Very thorough; listened.

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