Joseph Ahn M.D., M.S., F.A.C.G.

Photo of Joseph Ahn, M.D., M.S., F.A.C.G.
Faculty profile

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

Accepting new patients

4.7 out of 5 (295 Ratings, 71 Comments)


  • Hepatology / Liver Disease
  • Transplantation

Special focus on

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


  • M.D., Northwestern University, Chicago Illinois 0 2000
  • M.S., Northwestern University, Chicago Illinois 0 2006
  • Residency:

    • Internal medicine, University of Chicago Hospitals, Chicago, IL, 2003
  • Fellowship:

    • Gastroenterology and Hepatology, Northwestern University Medical Center, Chicago, IL, 2006
  • Certifications:

    • Internal medicine


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

4.7 out of 5 (295 Ratings, 71 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 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.

  • Dec 06, 2018

    Dr. Ahn is very compassionate, knowledgeable, caring, considerate. Just, an all-around great doctor.

  • Nov 26, 2018

    Dr. Ahn is very very thorough and professional man, and he is very acute to detail, and recommend him to anybody. Thank you.

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