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

4.8 out of 5 (296 Ratings, 108 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

4.8 out of 5 (296 Ratings, 108 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

  • Dec 21, 2019

    Doctor Lopez and his team provide compassionate care and support to his patients.

  • Dec 19, 2019

    Dr Lopez is a great listener and answered all my questions

  • Dec 05, 2019

    Yes, Dr. Lopez is excellent. I would recommend him to anybody else with the same problems. I have I trust him explicitly and enjoy talking to him also about what I have.

  • Dec 03, 2019

    He's caring and knowledgeable.

  • Nov 27, 2019

    Another great visit with Dr. Lopez, he was extremely thoughtful and empathetic about both my treatment and some other issues I mentioned. Always a pleasure to work with him.

  • Nov 23, 2019

    I think he's terrific. He's very caring, very articulate clear. He really knows what he's talking about. And I appreciate that.

  • Nov 21, 2019

    PhD Lopez is the biggest spiderweb thinker I've met. He has real options for patients and can accept and admit downfalls and mistakes. He can explain things in detail down to molecular signaling, or just be a doctor and make the right choices for patients during their ambivalent times. I'm very glad and excited to see what's next with him as my doctor.

  • Nov 16, 2019

    This office is an amazingly efficient operation and we so appreciate all the help that we've gotten and Dr. Lopez is just the best and so are all of his helpers. We thank you so much.

  • Nov 07, 2019

    Dr. Lopez is a most caring attentive doctor! So blessed to have him being attentive to my care!

  • Oct 27, 2019

    He was very helpful and understanding .

  • Oct 24, 2019

    I love love love Dr. Lopez and am grateful to have him and the team in my life.

  • Oct 17, 2019

    Dr Lopez is kind, compassionate, knowledgeable and my lifesaver. I can never thank the team at OHSU enough.

  • Oct 15, 2019

    Dr. Lopez has been a remarkable leader of my healthcare team. Smart, personable and kind - I couldn’t have asked for a better oncologist. Thank you Dr. Lopez and OHSU!

  • Oct 14, 2019

    We always have excellent care and excellent bedside manner. Thank you!

  • Oct 03, 2019

    Good informative appointment.

  • Sep 19, 2019

    Dr. Lopez takes time to explain everything and answer questions.

  • Sep 12, 2019

    Lopez listens and responds. I'm glad he understands my disease so we'll he can make immediate informed decisions about processes and options. I'm happy he got a scribe so he can review in-patient meetings to review his thoughts accurately later.I'm glad he's still my doctor.

  • Sep 12, 2019

    Dr. López is thorough, thoughtful and compassionate. He explains conditions fully and listens intently. Knowledgeable about patient history and professional.

  • Sep 07, 2019

    Dr. Lopez is a new doctor for me and I'm very pleased. He listens well, he explains quietly, takes questions, he's respectful, seems very knowledgeable, he called me at home when he needed to tell me something. That's it.

  • Aug 31, 2019

    Dr. Lopez responded to my symptoms, and got me the right kind of treatment on the day that I saw him for cancer treatment my symptoms were something else but he was able to get me to where I needed to be he was fantastic.

  • Aug 27, 2019

    I can?t say enough about the staff at OHSU. I am treated with kindness and respect. Dr. Lopez is a wonderful dr. and I have every confidence in my treatment. The medical staff is outstanding.

  • Aug 22, 2019

    Dr. Lopez is the best physician I have ever had. Patient, kind, never talks down to you.

  • Aug 20, 2019

    Dr Lopez on time, thorough in his assessment, cordial,good listener,very good at explaining my condition.

  • Aug 15, 2019

    great timing with the apointments

  • Aug 15, 2019

    My doctor listens well and answers all of my questions.

  • Aug 08, 2019

    I am so grateful for D.r Lopez. He is so humble and so present with me. I truly can't even articulate how truly grateful I am for him!

  • Jul 25, 2019

    Dr. Lopez obviously is very concerned about my health and I believe doing everything he can to minimize my tumors and to provide for my quality of life. I very much appreciate the research he and his team are doing to improve my condition and reduce the effects of the disease. He explains my current condition, the potential outcomes of the treatment and the clinical reports extremely well. I very much appreciate Dr. Lopez and the immense amount of work he continues to do on my behalf, on the behalf of others and for his contribution to cancer research.

  • Jun 29, 2019

    Compassionate, very thorough and answered all questions we asked.

  • Jun 28, 2019

    Dr. Lopez is awesome. He does a great job of explaining everything and he really seems like he cares and seems like to know his field, as well as anybody, so he does a fantastic job and I feel very comfortable with him as my doctor.

  • Jun 13, 2019

    He is excellent!

  • Jun 12, 2019

    Dr. Lopez was very caring, personable, explained course of action and took the proper time to do so. He wants to have all the pieces to the puzzle before he makes recommendations. He wants to do what's best for my overall care. His staff was very good as well, answering questions, etc.

  • Jun 11, 2019

    Dr Lopez was great! He explained things well and answered all of our questions.

  • Jun 07, 2019

    So very caring and informative!

  • Jun 06, 2019

    I am a new patient. He reviewed my records from a previous provider and was prepared to discuss my diagnosis. I was impressed with how prepared he and the entire staff was.

  • May 27, 2019

    Dr. Lopez is such a wonderful and lovely human being. I am so grateful he is my chemo oncologist.

  • May 23, 2019

    My doctor is very concerned about my health and answers all my questions.

  • May 16, 2019

    Dr. Lopez was thourogh, attentive, and thoughtful.

  • May 11, 2019

    I really like Dr. Lopez. He does a really good job explaining any questions that I....answering any questions that I have and explaining the situation and just love having him as my doctor.

  • 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.