Khoi D. Than M.D.

Photo of Khoi D. Than, M.D.
Faculty profile

Assistant Professor of Neurological Surgery School of Medicine

Accepting new patients

4.4 out of 5 (236 Ratings, 65 Comments)


  • Neurological Surgery

Special focus on

  • Neurological Spinal Surgery
  • Neurosurgery
  • Spinal Surgery
  • Spine


  • B.A., Johns Hopkins University, Baltimore Maryland 2003
  • M.D., Johns Hopkins University School of Medicine, Baltimore Maryland 2007
  • Residency:

    • Neurosurgery, University of Michigan, Ann Arbor, Mich., 2014
  • Fellowship:

    • Minimally invasive and complex spine surgery, University of California, San Francisco, 2015


Dr. Than is a neurosurgeon who is fellowship-trained in minimally invasive and complex spine surgery. Although he enjoys treating the wide spectrum of general neurosurgery, his passion is treating patients with spinal disorders. In an era when medical decision making is largely based on laboratory results and imaging findings, Dr. Than still believes in the art of medicine: correlating patient symptoms with study results and offering the appropriate surgical solutions. In other words, Dr. Than believes in treating the patient, not just the disease.


  • English
  • Spanish
  • Vietnamese

Memberships and associations

  • American Association of Neurological Surgeons, Member
  • Congress of Neurological Surgeons, Member
  • AANS/CNS Section on Disorders of the Spine and Peripheral Nerves, Member
  • International Spine Study Group, Member
  • North American Spine Society, Member
  • Oregon Medical Association, Member
  • Scoliosis Research Society, Candidate Member

Patient Ratings

4.4 out of 5 (236 Ratings, 65 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

  • Apr 20, 2019

    Dr, Than is amazing. He takes his time to explain things and to answer questions thoroughly. He is very confident in what he does which brought me peace of mind.

  • Apr 19, 2019

    Explained things- was very positive and spent the time to answer my questions.

  • Apr 14, 2019

    I had spent time filling out the usual health history forms. The doctor then began asking me about my health history while taking notes. The answers to all of his questions were on the forms that I already filled out! a complete waste of my time! Why bother filling out the forms if the physician is not going to read them!

  • Apr 12, 2019

    It was a great experience

  • Apr 12, 2019

    Very pleasant. Took the time to really explain what he thought, why he thought it and what he recommended we do to improve my situation. Great doctor.

  • Apr 12, 2019

    Very thorough and very explanatory and he knows what he's doing. He's going to ... he's got my acceptance and I believe in him and I will want to do what he wants.

  • Apr 07, 2019

    Dr. Clay's very polite, professional and answered all of my questions as well as all my husband's questions and we very much appreciated it.

  • Apr 05, 2019

    He is very good at everything. No complaints. Easy to follow and patient.

  • Mar 30, 2019

    Dr. Than and his intern Dr. Ross are special. Both are extremely patient, kind and compassionate besides welcome professionalism, an amazing and refreshing combination. Appreciated ability to share thoughts, ideas, and their expertise absolutely!! Nice to have doctors who will listen!! Dr. Than immediately put my fears and anxiety to rest - for such a "concerning medical situation" the visit with both (and the entire staff) was pleasant; a joy!

  • Mar 29, 2019

    I felt that the doctor did a great job and he was very knowledgeable and kept assuring me of what was happening and I felt well taken care of.

  • Feb 19, 2019

    Dr. Than was informative and thorough, providing me with all the details I needed about a minimally invasive procedure I’m needing. He was very confident in his abilities to preform this procedure and of positive outcomes, which put my mind at ease and assured me that I’m in good hands.

  • Feb 16, 2019

    it was short I felt like I had more questions to b answered but dr was in a hurry

  • Feb 11, 2019


  • Jan 27, 2019

    He was very professional very nice. Explain everything showed me the MRI made me feel quite comfortable.

  • Jan 26, 2019

    I have confidence in Dr. Than and can get on My Chart any time I have a question or problem.

  • Jan 26, 2019

    All the staff are very nice and friendly.

  • Jan 25, 2019

    It went very well.

  • Jan 11, 2019

    Dr. Than was courteous and very informative. He was patient and very thorough in reviewing the MRI results, helping us to better understand the procedure he was recommending. We left feeling confident and comfortable with the type of care we can anticipate receiving.

  • Jan 08, 2019

    Dr Than if very personable. Insightful. Answers all your questions and doesn't give up on digging into your healthcare needs. He is caring

  • Dec 28, 2018

    I had a very positive doctor as great!

  • Dec 24, 2018

    Yeah, I met with this provider and give her like in difference or something going on there. Like I was bothering him or whatever. He didn't really have any information on what? Cause this problem muscle spasms or why they're there or what the condition is or what the situation is between the muscles kind of physical maybe scientifically. What's going on there? I can understand that sort of thing and What can be done to resolve it other than just going to some pain therapy clinic or something like that? That was your Google paying her pain therapy clinic on what not. So that's my feedback. Satisfied. Thank you.

  • Dec 22, 2018


  • Dec 15, 2018

    Hi, this is [Name]. I'm very satisfied with Dr. Khoi he is the best and I would recommend him to anybody who needed help or service with her back fine. And then he says he's very nice. He's very thorough and he explained to you things that you don't understand and ways you can understand it. So I'm very happy with him.

  • Nov 26, 2018

    He was very personal. A lot ... showed a lot of the interface and I just met him for the first time and highly respected him.

  • Nov 19, 2018


  • Nov 10, 2018

    Dr. Than was professional and very nice.

  • Oct 06, 2018

    Clearly explained my condition.

  • Oct 02, 2018

    Very professional and friendly as well

  • Sep 22, 2018

    Dr Than was the most caring , compassionate, informative, personable and amazing doctor I've ever been to . Thank you so much for having such a wonderful and professional yet humble doctor on staff . He put my mind at ease, answered all my questions, made me feel in charge of my health. I very much appreciate him .

  • Sep 21, 2018

    Positive outcome from a serious surgery.

  • Sep 14, 2018

    From start of surgery to my 6week visit it has been a great experience, nurses and staff were wonderful

  • Sep 06, 2018

    Very efficient & professional

  • Sep 06, 2018

    Top notch medical provider

  • Sep 02, 2018

    I feel that Dr Than is very good at what he specializes in but he seems to lack a bigger picture view of me as a patient. I have multiple issues going on and he tends to just focus on his particular area of expertise which can be very limited.

  • Aug 30, 2018

    He was great and knew I needed surgery.

  • Aug 23, 2018

    Dr. Khoi Than has magic hands, pretty simple as that. Took my pain level down 90%. Excellent.

  • Aug 23, 2018

    Very erfficient and easy to get through the process.

  • Aug 23, 2018

    Good patient rapport. Thorough.

  • Aug 21, 2018

    He?s a very knowledgeable Dr. His bedside manner is lacking, but as long as he knows what he is doing, then I can deal with it.

  • Aug 11, 2018

    I would definitely recommend Dr. (INAUDIBLE) to anybody that has issues with their spine. He saved my life and he's the best doctor I think that God ever put on this earth and I think he's just wonderful. I would definitely go to him a hundred times over. A good experience. (INAUDIBLE).

  • Aug 10, 2018

    Mr. Than was insightful and straight to the point. Helpful and I would recommend him. Maybe spend a little more time explaining the different possible options. Would be helpful, but other than that was absolutely phenomenal. Thank you.

  • Aug 04, 2018

    My experience with Dr. Tan has been exemplary. The surgery was excellent and has relieved me completely of all back pain.

  • Aug 04, 2018

    I had a very good experience at OHSU with all the nurses, doctors, and staff and everything and all the combinations. I was very pleased with it, and I would recommend OHSU to anyone needing any medical attention or medical help, and I was very pleased with my visit. And I will use OHSU in the future. Thank you.

  • Aug 03, 2018

    Dr Than is very professional, takes time to explain things in terms I could understand.

  • Aug 02, 2018

    Dr Than is very precise, to the point and informative. I appreciate his candor.

  • Jul 19, 2018

    My visit with Dr. Koy Than went very well, and he was going to do a referral letter to neuro spine institute for me, for pain management, to have my pain pump put back in, which he removed during a spine surgery, but the, my office visit with him went very well. There were other people in the room, and a new physician's assistant, and answered questions, and said I would be in pain the rest of my life, and he's be more than happy to do a referral, and I was calling to give him a fax number or something, and then I got a survey line instead though, so I was kind of surprised by that, but the visit went very well.

  • Jul 19, 2018

    I have placed my confidence on Dr Than for the largest, most complex procedure I will experience in this lifetime. The choice is based on Dr Than?s Years of experience, his selection as best suited for my file when reviewed by OHSU Spine center physicians, his thorough evaluation and formulating an optimum solution to several points of repair and treatment his judgment considers most important.

  • Jul 19, 2018

    I was very happy with my experience. I believe that your doctors are some of the finest in the world, and I would go to the hospital again if I had to at any time, and tell all my friends about it. Thank you.

  • Jul 18, 2018

    Very pleasant and caring. Explained everything very well and was I able to understand everything.

  • Jul 10, 2018

    I like him a lot, but he was a little overly optimistic in predicting how quickly the recovery would go. When I subsequently saw him he admitted that it could be considerably longer than what he suggested at our pre op conversation.

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