Timothy K. Liem M.D., M.B.A., F.A.C.S.

Photo of Timothy K. Liem, M.D., M.B.A., F.A.C.S.
Faculty profile

Professor of Surgery, Division of Vascular Surgery School of Medicine

Accepting new patients

4.8 out of 5 (312 Ratings, 107 Comments)


  • Surgery

Special focus on

  • Endovascular Surgery
  • Surgery
  • Vascular Surgery


  • B.A., University of California, San Diego, Jacobs School of Engineering, Bioengineering, La Jolla California 1986
  • M.D., University of Southern California, Los Angeles California 1990
  • M.B.A., Oregon Health & Science University, Portland Oregon 2015
  • Residency:

    • General surgery, Kaiser Foundation Hospitals, Los Angeles, Calif., 1990-1995
    • Vascular surgery, University of Missouri, Columbia, Mo., 1995-1997
  • Certifications:

    • General Surgery, Vascular Surgery, American Board of Surgery



Dr. Timothy Liem is a professor of surgery at OHSU where he is a vice-chair for quality in the OHSU Knight Cardiovascular Institute. He received an undergraduate degree in biomechanical engineering from the University of California at San Diego, and he received his medical degree from the University of Southern California. He completed his general surgery training at Kaiser Foundation Hospitals, and his vascular surgery residency at the University of Missouri-Columbia. In 2015, he received his MBA in healthcare management from OHSU. Dr. Liem is board-certified in general surgery and vascular surgery. He is a member of the Society for Vascular Surgery, the Midwestern Vascular Surgical Society, the Western Vascular Society, the International Society for Thrombosis and Haemostasis, and Alpha Omega Alpha. He is on the editorial board and a reviewer for numerous medical journals, and has authored or co-authored over 80 book chapters and peer-reviewed articles. He lectures across the country on topics including venous thromboembolism, anticoagulation and venous duplex imaging. Dr. Liem sees patients in the OHSU Vascular Surgery Clinic at the Physician’s Pavilion, and in the Vein Clinic at South Waterfront.

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  • English

Memberships and associations

  • Fellow, American College of Surgeons

Patient Ratings

4.8 out of 5 (312 Ratings, 107 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 05, 2019

    Dr. Liem is a wonderful doctor. The only problem is that the clinic always runs late.

  • Nov 19, 2019

    He is kind ans caring, and he describes everything really well!

  • Nov 14, 2019

    They are knowledgable, friendly, and informative.

  • Nov 09, 2019

    Professional, attentive, courteous, good listener, explained diagnosis well.

  • Nov 02, 2019

    Everything and everyone was welcoming and very professional. Dr. Liem had explained my procedure very thoroughly and it went as he predicted. I would recommend Dr. Liem and his staff to anyone without reservation.Thank you!

  • Oct 29, 2019

    Dr. Liem was very understanding careful, caring and explained everything that he had to do and was going to do in the procedure.

  • Oct 26, 2019

    Dr. Liem is very kind and a good listener. He has provided me with excellent care.

  • Oct 25, 2019

    Dr. Liam is a very pleasant gentleman. We asked questions, he gave us the answers we wanted. I feel comfortable being in his care.

  • Oct 19, 2019

    The doctor took us in on time. We didn't have to wait and he was very, very, knowledgeable and very honest about what should be done and I liked him a lot, so and I look forward to my surgery.

  • Oct 17, 2019

    Excellent! Gave extremely thoughtful consideration to my problem.

  • Oct 05, 2019

    Actually took the time to go over all details of the procedure. even drew a picture to explain it. Very caring Dr. I would be very comfortable having this Dr. perform a surgical procedure even though I just met him.Was on time which was very much appreciated. His nurse was awesome also.

  • Oct 03, 2019

    It's always a pleasure to spend time at OHSU's Imaging office.I've made some great friendships there. Always courteous and friendly, but above all , efficient. Going to some medical facilities may be traumatic. NOT here.The Vascular surgery department is outstanding. Even when extremely busy, as it is sometimes, the staff are helpful and always friendly. I rate them as tops in reception skills.Of course the Medical staff is excellent. I've known Dr. Liem for over 10 years and I regard him as not only a friend, but one hell of a physician. Top scores to all at OHSU

  • Oct 03, 2019

    Extremely professional with all the best medicine and doctors to offery

  • Sep 26, 2019

    Dr. Liem is very soft spoken and he seems to care.

  • Sep 21, 2019

    Dr. Liem is very knowledgeable and willing to answer all my questions in detail.

  • Sep 14, 2019

    Yes, I I believe that Dr. Liem my vascular surgeon has really done done a very good job and and he's very conscientious about the work that he does and yes, I would recommend him to anybody.

  • Sep 13, 2019

    It was great as always!!!

  • Sep 13, 2019

    Dr. Liam is quite personable and knowledgable. He provides a great explanation of the procedure and summary of how he is going to perform it. He is also enthusiastic about answering questions. I hope that I do not have to have this procedure again in my lifetime, but if I do, I would definitely come back to Dr. Liam.

  • Aug 31, 2019

    Oh, we thought Dr. Liem, was absolutely wonderful. He knew what was doing, he was just awesome. I couldn't recommend him enough.

  • Aug 29, 2019

    I have always had a positive experience while at OHSU.

  • Aug 24, 2019

    Dr Liem was very pleasant, he explained the procedure and covered everything clearly.

  • Aug 01, 2019

    Dr Liem is a no nonsense doctor/surgeon. He has always gone over and beyond just the minimal care and requirements that have to be met by a medical professional. His monitoring and care of my condition since the initial surgery has been excellent.

  • Jul 31, 2019

    Awesome staff and care.

  • Jul 28, 2019

    Honest, capable doctor. Friendly efficient check-in personnel.

  • Jul 21, 2019

    Great bedside manner: friendly, approachable and patiently explains everything about my condition, the treatment options available and his recommendations. I had experiences with another vascular surgeon at a different PDX hospital. Dr. Liem's approach is 180 degrees in the opposite - better - direction. Thank you!

  • Jul 20, 2019

    Provider was very professional, listened, understood and was extremely *

  • Jul 10, 2019

    Everything was exceptional during my visit, the people that worked with me were amazing and very attentive to my needs. I would definitely come back here if needed, this was the best hospital experience that I have ever had. Thank you to everyone that cared for me during my visit!

  • Jun 28, 2019

    Well, I ... he was very good and I'm going to take care of the problem that he located at OHU.

  • Jun 28, 2019

    Everything is perfect with this doctor, thank you.

  • Jun 24, 2019

    Dr. Liem is an excellent physician who is willing to spend the time to answer all my questions.

  • Jun 24, 2019

    Dr. Liem was 45 minutes late in seeing me due to the person ahead of me being 30 minutes late. When I expressed concern about this, mainly that I was missing an event I wished to go to, Dr. Liem was extremely accommodating. He let me go right away and agreed to squeeze me in at the end of the day for a procedure that I would have had to schedule in another month. (I was still in the mindset of how things were done 5-6 years ago when a sclerotherapy procedure could be done the same day as the checkup appointment. They let me know that's not how it's done anymore while still honoring the old system one more time for me.) He more than made up for the 45 minutes that the office was behind and showed that even in a big system like OHSU, there is still room to be flexible and give patients more than they were expecting. I was also so impressed by Sherry (I think I'm getting her name right), the nurse who works with Dr. Liem. Because Dr. Liem accommodated me in this way, that meant that she had to stay late, too. She never showed even the least bit of annoyance by this. She was so friendly to me the whole time even though she could have started her weekend by then. I'd like to say a big thank you to both of them!

  • Jun 22, 2019

    He was so excellent! Patient and great at explaining what would happen, potential risk and letting me make decisions. I really enjoyed my appointment with him!

  • Jun 22, 2019

    Took his time and explained procedure thoroughly

  • Jun 17, 2019

    Very professional and friendly, Excellent service and explanation of care at the time of the office visit and follow up information.

  • Jun 14, 2019

    Dr. Liem explained what he was doing, what is t would do to take care of my problem and gave us a time for surgery. He was able to take care of it in the office bld. He explained as he did the repair I felt secure with him. Today Friday June 14, my lump is very small, and I have no pain at all. My heartfelt thanks to Dr. Liem for repairing the blood leak in my wrist and taking away all my pain.

  • Jun 13, 2019

    He's a great listener, takes his time, and offers his advise in addition to explaining the unknowns.

  • Jun 10, 2019

    Dr. Liem is very personable and attentive. He spent a lot*.

  • Jun 06, 2019

    Very pleasant. Wonderful doctor and human being. Always concerned about what is going on with you and not just his specialy. I can’t say enough nice things about him!

  • Jun 04, 2019

    I had a very positive experience from check-in, through time with the doctor, to check-out. Everyone was helpful, friendly and welcoming. The doctor left me with a great deal of confidence in his skills and plans for my care. It was all great!

  • Jun 01, 2019

    He listened to me and didn't imply that I was lying. He provided me with accurate information and didn't talk down to me. I felt comfortable and confident in his abilities. I will let him cut on me. ?

  • Jun 01, 2019

    Solid communicator. Listens well. Explains well. Seems like a happy person interested in using his skills to serve your needs.

  • May 30, 2019

    All staff, nurses, doctors were professional, very kind, and treated me like family.

  • May 18, 2019

    Easy, painless and insightful. This was my third visit with Dr. Liam and his procedure was impeccable

  • May 16, 2019

    He was pleasant and answered my many questions patiently. Was careful to not give me false hope

  • May 04, 2019

    Top notch, what a difference coming from Kaiser. The physician did notch rush me out and seemed to genuinely care.

  • May 04, 2019

    Very friendly, very experienced, very honest, keeps talk to you straight up.

  • May 02, 2019

    Thought he listened well, gave me his full attention and explained things in a very understandable way.

  • Apr 22, 2019

    Dr. Liem is a fabulous physician slash surgeon who listens to his patients and, is very caring and I would recommend him to anyone.

  • Apr 18, 2019

    Dr Liem has been very supportive and helpful with events that have arisen periodically from procedures. I might add here that I have been a smoker for 62 years of my 82 years. Due to Dr Liems influence and witty way of making me realize that I really had to quit smoking. I did quit after so many years. My quit date was Dec 15. So smokeless now for 4 months. Thanks to Dr Liem.

  • Apr 18, 2019

    The doctor was very pleasant and very thorough and we were very impressed with him.