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 (318 Ratings, 102 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 (318 Ratings, 102 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

  • Oct 17, 2019

    Excellent! Gave extremely thoughtful consideration to my problem.

  • 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 13, 2019

    It was great as always!!!

  • 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.

  • Apr 13, 2019

    It was easy to understand the problem to treat. He explained it well. I'll be ready to revisit and ask new questions because I believe he'll make a good point to my thoughts on the topic. I really like the service of OHSU, it is a good location. It was a good experience.

  • Apr 11, 2019

    Very caring, knowledgeable,professional,friendly!

  • Mar 21, 2019

    Very informative and personable.

  • Mar 18, 2019

    Dr. Liem was very thorough and took the time to answer all of our questions. I have total confidence in him.

  • Mar 16, 2019

    I was there for my 2 year checkup on my bypass in my shoulder. Dr. Liem is always very professional, caring & kind. He always remembers you & all the details of your history/surgery. He is a one of a kind doctor. The best in my book.

  • Mar 16, 2019

    He was a good bed side manner, he was very informative and give me a full account of what was going on, and I appreciated that.

  • Mar 13, 2019

    Timothy Liem is a brilliant vascular doctor and surgeon, he has done a tremendous job getting me put back together, fixing me, making fistulas, whatever it may be for over 10 years now, I think or over 8 years at least and I am beyond grateful for the work that he does and any time I have to have vascular work done I want it to be by him every time.

  • Mar 11, 2019

    The doctor was very attentive, explained himself very well, and he was excellent at my visit.

  • Mar 05, 2019

    Dr. Liem balanced professionalism with a caring manner. He took time to review and further examine the area of concern. I appreciated his thoroughness and the options of treatment discussed.

  • Feb 22, 2019


  • Feb 14, 2019

    My experience with the doctor is very, very good. Very pleasant. Very kind, and the assistant also seems excellent to me.

  • Feb 10, 2019

    I was a bit concerned with the state of the skin in my ... in my mouth and they kind of blew over it. I don't know if they're hoping that treatment take care ... will take care of it or not, but it was a little discerning.

  • Feb 09, 2019

    Dr. Liem is a genuinely kind man and an incredible doctor that has done some amazing work on my fistulas and has and been creative and helpful for successful fistulas and blood flow to have good treatment and I am very grateful for that.

  • Feb 09, 2019

    I found Dr. Liem to be very thorough, very helpful with any questions I had. He's very kind and I enjoyed talking with him. And I believed him to be a very good doctor, very good.