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

4.9 out of 5 (268 Ratings, 81 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

4.9 out of 5 (268 Ratings, 81 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

  • 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.

  • Feb 08, 2019

    Thorough. Efficient. Understanding.

  • Feb 08, 2019

    Dr. Liem was very helpful in calming me down from my situation [Name]'s bypass. He had all the knowledge he needed to pass to me and did it well. He was a very likable guy and and knew what he was talking about made it easy for a common man to understand it. I'm much at ease. Thank you.

  • Feb 05, 2019

    Comfortable and friendly

  • Feb 04, 2019

    He listens well, makes sure he understands what you are saying, and thoroughly responds to questions. He's a good communicator. Yet he was efficient. I felt confident in his clinical knowledge. He shared how many of the type of procedures he performs and discussed outcomes.I've a long history of working professionally with physicians. This is the kind of physician I wish most patients could experience.

  • Feb 03, 2019

    Going into the surgery I had expectations of pain during and after. Not only was my pain minimal during but also almost nonexistent after. I appreciated all my procedure questions being answered thoroughly by both Dr. Liam and his assistant

  • Feb 01, 2019

    I had a very positive experience. Every single staff member that I met was kind and caring. I have worked in health care for many years and this is by far the best organized hospital. I felt that the provider took the time to listen to my issues and had a plan of care for me. I give 110% to this provider and every staff member. Very pleased and at ease.

  • Feb 01, 2019

    Having been a patient for a number of years, I will attest to the kindness and professional standing of the physicians and staff of OHSU vascular department. I hold each as friends. I've never been disappointed in any way. Thanks to all.

  • Jan 20, 2019

    Dr. Liem is a good, caring doctor. He was running late, but he takes time with the patient

  • Jan 15, 2019

    I would just like to say that he was very very helpful. And he's a very good doctors Dr. Anytime I've seen him he's been willing to answer any questions I asked and the most of the time is it Answers, I want to hear. but whether or not so good that you just tell me the truth and I realize that that's about all I have for now.

  • Jan 13, 2019

    Dr Liem was very polite, explained everything, considerate.

  • Jan 12, 2019

    Very open, honest and thorough.

  • Jan 05, 2019

    The doctor was great his assistant was as well . My only issue was I was very nervous for my procedure and it's very nerve racking laying there for two hours and painful having something to relax me would have been helpful.

  • Dec 16, 2018

    Very informative very professional

  • Dec 16, 2018

    The entire staff makes you feel comfortable .Very accurate, very coordinated, on time, very knowledgeable, very professional.

  • Dec 14, 2018

    Always friendly, almost always on time..

  • Dec 07, 2018

    Informative regarding POC and prognosis. Compassionate and excellent communication skills and practice.

  • Dec 06, 2018

    This provider Dr Liem is very accurate in his health assessments, has a great attitude about explaining the existing problems and various things that could arise if problems are not corrected.Is very direct and does not beat around the bush and answer my questions in a way I can understand them.

  • Dec 02, 2018

    He was great! Very nice and thorough.

  • Nov 30, 2018

    Always been positive and is probably the best doctor we have had since being in Oregon with my elderly parents in the past four years.

  • Nov 29, 2018

    Yeah, I thought the Dr. Liem was - is a very good doctor and he was truthful with me and he apologized, that you know the news I had was more on the on the bad side than the good side, but that was not his fault - he just told me the truth and he apologized a couple of times, and I appreciate that, and I think he's very good doctor.

  • Nov 10, 2018

    Excellent doctor that listens and takes his time. Really seems to care about the patient.

  • Nov 09, 2018

    Dr. Liem is an excellent physician. He's very personable, he's very knowledgeable, he cares about his patients and he's just a real good doctor.

  • Nov 04, 2018

    Thoughtful, respectful, knowledgeable

  • Nov 02, 2018

    Dr. Liem is very excellent and I would recommend them to anyone. I enjoy seeing them and we look forward to our visits.

  • Oct 27, 2018

    Well, I think is a very good doctor. Very respectful, very excellent and a very good person, very professional. I' very glad that he is my doctor and I will take him again.

  • Oct 26, 2018

    Very pleasant and knowledgeable.

  • Oct 19, 2018

    It was great as usual!