Koen De Geest M.D.

Photo of Koen De Geest, M.D.
Faculty profile
  • Gynecologic oncologist

Professor of Obstetrics and Gynecology School of Medicine

Accepting new patients

4.8 out of 5 (190 Ratings, 69 Comments)


  • Cancer
  • Gynecologic Oncology
  • OB/GYN

Special focus on

  • Gynecologic Cancers (Rare)
  • Gynecologic Oncology


  • B.S., University of Gent Belgium 1973
  • M.D., University of Gent Belgium 1977
  • Residency:

    • University of Gent, Belgium, 1982
  • Fellowship:

    • Fellowship in gynecologic oncology, Pennsylvania State University, 1990
  • Certifications:

    • Belgian Board of Obstetrics and Gynecology


Dr. De Geest is a renowned specialist in gynecological cancers who has been voted in the top 1% of gynecologic oncologists nationally by Best Doctors in America®. He specializes in the diagnosis and treatment of:

Ovarian cancer Endometrial cancer Cervical cancer Vulvar cancer Gestational Trophoblastic Disease

Dr. De Geest’s current research interests include novel therapeutics and personalized treatment of ovarian and endometrial cancer. An accomplished researcher, he has actively participated in multiple clinical trials in ovarian, endometrial, cervical and vulvar cancer as principal investigator in the Gynecologic Oncology Group. He has authored and co-authored many of the publications resulting from these national trials. He has published on clinical and laboratory research in ovarian and endometrial cancer, and on the effects of mood and social support on the biology of ovarian cancer.

Prior to joining OHSU in 2013, Dr. De Geest was director of the Division of Gynecologic Oncology and the fellowship program at the University of Iowa in Iowa City. Earlier, he was vice-chairman in the Department of Obstetrics and Gynecology and director of Gynecologic Oncology at Rush University Medical Center in Chicago, Illinois.

Read more


  • English

Memberships and associations

  • American College of Obstetrics and Gynecology

Patient Ratings

4.8 out of 5 (190 Ratings, 69 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 03, 2019

    I thought that Dr. Degeest listen, he wanted to know my information or my history problem solved with me and he was very direct in his mannerism making me understand and Build a process the information is being provided.

  • Apr 26, 2019

    Dr DeGeese and his team were very professional, caring, and took the time to answer all my questions. I feel very confident going forward to surgery in their care. I was really impressed with the coordination in getting lab work, EKG, etc., and the form made out with directions. I have worked up here for years, but it made it very simple to proceed from one stop to the next, and still get to work on time.

  • Apr 26, 2019

    Dr. Degeest and his team of physicians has been wonderful and amazing to me. I had a very large white pelvic Mass that needed kind of a quick removal. I had my surgery yesterday 4/25. I'm actually in the hospital right now and a room feeling very well taken care of. I'm very confident in the procedure that he did and I feel very cared for by the whole team here that works with him. And of course, everyone that works there at OHSU but Dr. Degeest has been amazing and wonderful. My first visit with him was in Salem. So that's where I live the Salem hospital area and he did right away have me come up here for my pre-op and my surgery. His staffed did a wonderful job getting my visits authorized cuz I have Providence insurance and I was authorized in approved for the surgery that was desperately needed to remove this very *

  • Apr 25, 2019

    He was very informative, knowledgeable and supportive.

  • Apr 25, 2019

    Professional and reassuring. Dr. Degeest is the best of the best.

  • Apr 19, 2019

    Dr. Degeest is a very compassionate doctor, and he he and his team are on top of things that are going on with me and my treatment and I really appreciate that.

  • Apr 17, 2019

    I count myself lucky to be in treatment under Dr. DeGeest and his team and staff. He is experienced, professional, patient and wise. I know I'm in good hands - maybe even the best in Portland!

  • Apr 17, 2019

    Dr DeGeest is very thorough, explains things in terms I can understand and is very friendly.

  • Apr 13, 2019

    Evertone was very patient oriented. Always had a positive attitude about their patient needs.

  • Apr 05, 2019

    I absolutely adore Dr. Degeest, his nurse, Tori, especially. I love my Dr. Samuel Crane and Dr. Jerry Jaboyne. I cannot give you.... I wish there was 11 and 12 I could punch. I...I love your facility. Thank you very very much.

  • Apr 05, 2019

    I am extremely comfortable and pleased with my care at women's center and Dr. Degeest and his staff. Thank you.

  • Apr 03, 2019

    Friendly, knowledgeable and takes the time to answer questions.

  • Mar 29, 2019

    I absolutely love them. They were kind, courteous, respectful and they listened to me. They are absolutely fabulous. I will definitely be going back.

  • Mar 27, 2019

    I feel so fortunate to have such an excellent physician. Dr. DeGeest listens to his patient's concerns and provides update to date individualized and compassionate care.

  • Mar 02, 2019

    Very kind, welcoming and patient.

  • Feb 17, 2019

    Timely, caring, supportive, thorough, attentive, honest, educational. I feel safe, in good hands, optimistic but realistic. I feel lucky to have been guided to the care of Dr DeGeest and his whole team. Grateful.

  • Feb 16, 2019

    Dr. De Geest is a soft-spoken gentleman who answered all my questions with kindness and patience. I left the appointment feeling that I was in good hands.

  • Feb 09, 2019

    Hello, Dr. Degeest was very professional but also very nice and friendly and so was Lousia, the other doctor present... Dr. Degeest let me know all of the options I had or know all my options I had and he answered all my questions.

  • Feb 08, 2019

    Very compassionate.

  • Feb 02, 2019

    He was professional, he is attentive, and he is concerned with my health. I mean, he's a good doctor. I have no complaints about his services, and I give him a 10.

  • Jan 25, 2019

    Dr. Degeest was the best surgeon I could imagine ever having he was wonderfully had a great attitude, very kind, very thorough, and I believe it was a miracle from the Lord that I got him as a surgeon, him and the whole team is just your whole hospital was just wonderful and I appreciate all the treatment that I got there.

  • Jan 24, 2019

    Dr DeGeest is kind, compassionate, and highly intelligent. He has a wonderful bedside manner and takes time to really make sure you understand your plan of care. I would trust him with my life (and I do).

  • Jan 19, 2019

    This provider was very intelligent and very reassuring to me when I was in his office bringing up concerns that I had about my health care. I felt very satisfied with the care that I received. I feel that I can trust him to give me his honest opinion and he provided the assurance that I needed to follow through and deal with the rest of the issues that I have with my care. I would highly recommend him to someone else and I can't can't go any more than that. It was a very good experience. Thank you.

  • Jan 17, 2019

    Dr. DeGeest is one of the most caring and compassionate doctors I have ever met. He saved my life and my unborn daughters life when he helped me with an alternative treatment for my cancer. Not in my is he caring but he also listens to his patients and puts together a treatment plan that is tailored to that patient. He treats me as a person and not a number.

  • Jan 12, 2019

    He was incredibly knowledgeable, caring, and thorough. Couldn't have been any better.

  • Jan 05, 2019

    Hello, I have the highest possible respect in regard for Dr. Degeest.. He is a wonderful. He's a wonderful man. I have confidence in him at the doctor to the max. He's save my life. I'm always be grateful to him. The staff that work with him a really really nice people really great people and I really feel like I was lucky to get him for my doctor, and I'd recommend too many time to anybody who need to do. Thank you. Bye. Bye.

  • Dec 21, 2018

    This provider was on time, very thorough. I felt real comfortable with him. That's about all I have to say, he just knows his stuff, I can tell that, and he's not one to just ramrod you through. So.

  • Dec 20, 2018

    Seen earlier than appointment time!!!Given ample time to listen to clinical information, review and ask questions.

  • Dec 20, 2018

    The doctor has been an excellent doctor for me. I thank him for all of the help he has given me. He has treated me with a lot of patience. Thank you.

  • Dec 19, 2018

    He is helpful, approachable, and knowledgeable. I appreciated the information he shared

  • Dec 13, 2018


  • Dec 13, 2018

     is always very patient, explains things well, he's not - he's gentle, he's knowledgeable, and I have complete trust in him.

  • Dec 07, 2018

    I had a very good experience with Dr. De Geest. Very informative and kind.

  • Dec 06, 2018

    Appointments were timely. Treatment was scheduled quickly and all of the staff and Dr. DeGeest answered my questions, were friendly and helpful.

  • Dec 06, 2018

    He is one of the most caring doctors I have an into for this type of stuff and I really appreciate his input. When you ask him questions, he does his best to give you the answers.

  • Dec 06, 2018

    Time? Of the appointment.

  • Nov 29, 2018

    I found Dr. DeGeest to be helpful, courteous, & respectful. I'm looking forward to follow-up appointments with him.

  • Nov 28, 2018

    Great doctor, great team he works with, excellent experience.

  • Nov 26, 2018

    I was very happy, very pleased that I was told my cancer was cured. They took a little longer in surgery. Did a wonderful job. No cancer cells remain. I am excited. Absolute happy.

  • Nov 21, 2018

    very caring. Encouraging a great doctor

  • Nov 14, 2018

    Answers questions and he's thoughtful.

  • Nov 10, 2018

    Dr. DeGeest is a caring provider that gives a warm smile and confidence and answers all questions.

  • Nov 02, 2018

    I did not feel like the doctor paid very close attention to my questions. I don't think he took them seriously, nor did I get very detailed answers, so I left feeling like I didn't.... wasn't any more informed than I was before the appointment.

  • Oct 25, 2018

    Everyone here is top notch. Always positive even when having to review bad test results, yet firm in recommendations.

  • Oct 25, 2018

    As always, the care he provides is exceptional.

  • Oct 12, 2018

    He has been my oncology gyn and did my surgery and I see him every 3 to 6 months. As far as I am concerned he is one of the best.

  • Oct 12, 2018

    I was told i needed surgery and we will make 4 slits and remove all from vagina, make these appointments, see you later. We need to do some tests to see if your daughters may also get it

  • Oct 06, 2018

    Dr. Degeest is professional, he listens and answers questions directly always establishing eye contact and he exhibits compassion.

  • Sep 27, 2018

    Everyone was so caring.

  • Sep 19, 2018

    Dr. DeGeest is absolutely FANTASTIC! He?s always so thorough and thinks of everything. I?ve never felt so comfortable and safe with another doctor in my life. There is no doubt in my mind that he is I fact the best in his field worldwide, and if he isn?t, he really should be! The health care in my town is a joke. I travel 4 hours, one way, just to see him, and it is well worth my time to do so.

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