Joseph Ahn M.D., M.S., M.B.A.

Photo of Joseph Ahn, M.D., M.S., M.B.A.
Faculty profile

Professor of Medicine, Division of Gastroenterology and Hepatology School of Medicine

Accepting new patients

4.8 out of 5 (326 Ratings, 100 Comments)


  • Hepatology / Liver Disease
  • Transplantation

Special focus on

  • Abdominal Organ Transplantation and Hepatobiliary Surgery
  • Hepatology
  • Liver Cancer


  • M.D., Northwestern University, Chicago Illinois 2000
  • M.S., Northwestern University, Chicago Illinois 2006
  • M.B.A., OHSU, Portland Oregon 2018
  • Residency:

    • Internal medicine, University of Chicago Hospitals, Chicago, IL
  • Fellowship:

    • Gastroenterology and Hepatology, Northwestern University Medical Center, Chicago, IL
  • Certifications:

    • Internal medicine
    • Gastroenterology
    • Transplant Hepatology


Dr. Ahn is the director of clinical hepatology at OHSU. His research interests are hepatitis B, hepatitis C, liver cancer, and liver transplantation. He received his medical degree from Northwestern University and completed his residency in internal medicine at the University of Chicago and his gastroenterology and hepatology fellowship at Northwestern University in Chicago. Dr. Ahn is board certified in internal medicine, gastroenterology, and transplant hepatology. His current research studies include a multi-center trial to study the impact of antiviral therapy for hepatitis B on the development of liver cancer, and multiple studies on new pharmacotherapy for hepatitis C as well as screening and linkage of care for viral hepatitis.

When Dr. Ahn is away from medicine, he enjoys spending time with his family, practicing kendo, hiking, and traveling.

Read more


  • English
  • Korean

Memberships and associations

  • American College of Physicians

Patient Ratings

4.8 out of 5 (326 Ratings, 100 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

  • Jul 24, 2019

    Efficient, beautiful building, helpful staff and great doctor. Almost made a colonoscopy enjoyable;)

  • Jul 11, 2019

    Was a positive experience even tho the one test was hard for me. It was necessary and needed. I would request the same tech I had if I ever needed to do it again as she went above and beyond trying to help me through it. Everyone that I came in contact with did everything they could to keep me informed of every step that was being taken and keep me as comfortable as possible. Very friendly and helpful also.

  • Jul 04, 2019


  • Jun 27, 2019

    Thank you. Sometimes I marvel at the extraordinary luck I have with Dr. Ahn as my physician.

  • Jun 26, 2019

    What a GREAT team. Listened well. Truly engaged me to ensue that I understood what he saw my options were, explained what he recommended, ensured that I understood why he made those and that I concurred with them. Wonderful!

  • Jun 05, 2019

    I have been coming to OHSU for over 15 years and have always had a good experience. Great Doctors , PAs and wonderful staff and students

  • May 31, 2019

    Professional and friendly service by Dr. Ahn and the entire staff.

  • May 30, 2019

    He was exceptionally patient and informative.

  • May 16, 2019

    He is a very good Dr. Explains things very well.I’m very happy with him.

  • May 16, 2019

    Good . . . courteous, concerned.

  • May 09, 2019

    Very polite. Very thoroughly explains everything.

  • May 04, 2019

    First of he is respectful in his manner which is so nice. He answered all my questions so I understood the answer.

  • May 03, 2019

    A very good listener and talks to you on your level. I think he is very good at saying it in the way the patient needs to hear it.

  • May 03, 2019

    Dr Ahn and the staff are great.

  • Apr 27, 2019

    nice and clean little bit confusing

  • Apr 19, 2019

    Dr. Ahn is always a pleasure to see, he gets right to the point, doesn't waste my time. I would highly recommend him.

  • Apr 16, 2019

    Always greeted with a smile and a hand shake

  • Apr 14, 2019

    Dr Ahn and his resident Dr. Hom were both outstanding physicians and very approachable as human beings. They projected confidence, knowledge and the best qualities of a physician.

  • Apr 13, 2019

    The physician did an excellent job explaining my diagnosis and educating me with current And future expections. He presented a plan for followup. He was very intelligent,Polite, and thorough. I would highly recommend him.

  • Apr 11, 2019

    He's a great doctor. Been with me the whole way. Thank you very much.

  • Mar 29, 2019

    I have met with this provider 2 times, once at the beginning of planning for my transplant and on the 26th. Both times, he was very informational, gave me information that I needed and asked if I had questions and yes, very helpful. Thank you.

  • Mar 22, 2019

    Yes, he is a really good doctor. The service is pretty good. Attention is pretty good. Everything was fine, you know, I recommend to anybody ... anyone that be there and to take care of, he's pretty nice. Thank you.

  • Mar 22, 2019

    I absolutely love doctor Ahn I think he's very very talented. I wouldn't be where I am if it wasn't for him and thank you.

  • Mar 22, 2019

    my experience was well explained to me well and I liked very much explaining what I had

  • Mar 21, 2019

    Very knowlegible,explained well

  • Mar 15, 2019

    Very knowledgeable. Very compassionate.

  • Mar 15, 2019

    Very patient and calm and answered all my questions and very friendly and especially very knowledgeable. Thank you.

  • Mar 14, 2019

    Dr Ahn is my favorite doctor that I have seen. He is personable and caring but also straight forward and explains things well. He truly cares about each patient as a person.

  • Mar 14, 2019

    So, my visit went very well, it was very comfortable. He had notes from my last visit which was over a year prior to this visit and it seemed like he was very up-to-date, and the notes that he took the first one made this visit very comfortable, he already knew everything that... that I was seeking and that... the process of which I am going to be seeking treatment. So, I really appreciated his knowledge and his willingness to help me out.

  • Mar 06, 2019

    Dr. Ahn was very informative and very polite and very pleasant.

  • Mar 05, 2019

    The doctor was clear & comprehensive in his explanations. I felt confident in his recommendations.

  • Mar 01, 2019

    It was good

  • Feb 25, 2019

    I appreciate Dr. Ahn's transparent approach to my care. He gives me the information from which he has used, then gives me the decision he has made, then explains why he has made that decision and then asks for my questions. Even when he has to re-explain something he does it in patiently and softly. He acknowledged my fears and concerns and kept me on track and moving forward. He's wonderful.

  • Feb 22, 2019

    goodquickhe's thinking ahead about meds' effects on organs

  • Feb 13, 2019

    I want to tell you that Dr. Ahn is very thorough Dr. Ahn has given me peace of mind when I first came up to that hospital. I was petrified because I had hep C & I was told by doctors here in Longview Washington, and I only had two years to live. And boy, it's a she has been a lifesaver for me and Dr. Ahn gave me Peace of mind. He explained everything to me. And he's he's understanding and he's just a good person. Thank you.

  • Feb 07, 2019

    Very good.

  • Feb 04, 2019

    He was great. He's wonderful and he was very very good. Thank you. Very professional.

  • Jan 26, 2019

    Dr. Ahn is knowledgeable, approachable. He has an excellent understanding, both of my needs emotionally and a clear understanding of what my needs are physically. I would recommend him without hesitation.

  • Jan 25, 2019

    Spends the time to provide excellent treatment explanations. Courteous and pleasant demeanor. Instills confidence.

  • Jan 25, 2019

    Dr. Ahn was very kind and open to asking him any kind of questions. He seems very... to give my husband very honest answers about his illness and I just appreciated how relaxed and down to earth he was with us. It seems like he did enjoy talking to patients and helping them with their illness. I would highly recommending that anybody that has liver problems.

  • Jan 23, 2019

    He is a wonderful caring doctor. I'm so glad we found him.

  • Jan 11, 2019

    Dr Ahn is a busy professional and yes there is a lengthy schedule period waiting to see him. Once contact is made, he is very attentive, answers all questions and provides input. I am sure every patient is different but with me I appreciate his directness. A great leader for the department in OHSU.

  • Dec 22, 2018

    I was actually very impressed with the outcome of the questions that were asked and got a lot more information in regards to my health conditions and the possibility of seeing other providers or not other things that need to be addressed in regards to my house and greatly appreciate getting this kind of feedback and kind of getting a question questionnaire call, and it was very helpful, and I have never received that with being on any other health care plan, which I've been through the disk with Medicare and Medicaid, so I really greatly appreciated this care, Oregon. Thank you.

  • Dec 21, 2018

    Dr. Ahn is always professional and is willing to answer questions. I trust him, which means a great deal.

  • Dec 20, 2018

    Dr. Ahn is knowledgeable and friendly.

  • Dec 14, 2018

    Dr Ahn is great.

  • Dec 14, 2018

    Dr Ahn is professional, nice and friendly. He explained my health condition and treated me like treating a family member.

  • Dec 14, 2018

    Extremely positive experience. Everyone was professional, informative, and kind. All my questions were answered, some before I asked them.

  • Dec 10, 2018

    The nurse and doctor were nice and respected me, friendly as well.

  • Dec 07, 2018

    As always my appointment was on time. My discussion with Dr. Ahn reviewing my status was informative and all my questions were answered.I appreciate Dr. Ahn's straightforward manner and sense his empathy for my situation is real.