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Kentucky Children’s Hospital is now Golisano Children’s at UK.

William H. St. Clair, MD, PhD

  • Co-Director, Gamma Knife® Radiosurgery Center
4.87 out of 5
Best Doctors
Telehealth Provider

About

William H. St. Clair, MD, PhD, is a professor in the Department of Radiation Oncology at the University of Kentucky. Since coming to UK in 2000, he has served as Residency Director, Assistant and Associate Professor, and Interim Chairman for the department, as well as taking on a joint appointment in the Graduate Center for Nutritional Sciences. Dr. St. Clair previously worked as Assistant Professor of Radiology at the Bowman Gray School of Medicine at Wake Forest University, a Research Fellow in the Department of Cancer Biology, Laboratory of Radiobiology, at the Harvard School of Public Health, a Cancer Center Research Assistant at the University of Iowa, and as a Quality Control Chemist at First Mississippi Inc.

Dr. St. Clair completed his residency in radiation oncology at Massachusetts General Hospital and interned in the Department of Internal Medicine at The Christ Hospital in Cincinnati, Ohio. He earned his BS in Biology at St. Ambrose College, his MS and PhD in Radiation Biology at the University of Iowa, and his MD at UK. Dr. St. Clair is certified in radiation oncology by the American Board of Radiology and is a member of several professional medical societies.

Having served on many board committees, Dr. St. Clair has also been a part of many published research articles and has presented on their findings at myriad societal meetings across his more than 30-year career. His clinical interested include genitourinary and central nervous system neoplasms.

Outside of medicine, Dr. St. Clair enjoys taking hikes, particularly in state parks, and he considers himself an avid gardener.

Personal Statement: “What I like best about being in radiation oncology is two-fold: the technology is very interesting. It’s fast-moving and continuing to improve every day. And I really enjoy the very frequent patient contact. I get to see patients every day and share treatment successes with them. When I have a patient initially come to see me in a wheelchair due to the tremendous amount of pain they’re in and then get to see them up and walking after just two or three treatment sessions—it’s a very rewarding part of my job.”

Faculty Rank

  • Professor of Radiation Medicine
  • fixes empty view field issue
    Multi-disciplinary team and Gamma Knife

Training & Education

Degree

MD, University of Kentucky, College of Medicine, Lexington
PhD, University of Iowa, College of Medicine, Iowa City

Residency

Massachusetts General Hospital, Boston

Fellowship

Harvard University Medical Center, Boston

Certifications and Special Training

American Board of Radiology, Radiation Oncology

Insurance Information

Insurance policies can vary widely. Please check with your doctor/clinic for specific insurance information before your visit or procedure to avoid unexpected out-of-pocket costs.

See list of insurers

Patient Stories

Ratings & Reviews

4.87 out of 5
37 Reviews

The star rating is a calculation based on feedback from our patients using our nationally-recognized Press Ganey Patient Satisfaction Survey. Learn more about our survey process. Responses are measured on a scale of 1 to 5 with 5 being the best score.

  • Patient Review

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    August 6th 2025
    Very pleased with Dr St Clair!

    Patient Review

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    August 1st 2025
    The procedure was done professional and in excellent care.

    Patient Review

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    July 28th 2025
    I have been treated by Dr. St Clair for ten years. I have benefited from his skill and dedication. He has always been thorough in his descriptions of my health issues and the choices for my treatment options. I give him my highest evaluation and feel fortunate to have him as my doctor.

    Patient Review

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    July 22nd 2025
    UK Healthcare is a premium, superior network of exceptionally professional and highly knowledgeable providers that I would be proud to chose for my personal care of I agent a veteran. My wife is a patient at UK and she is pleased as lunch over her network of providers.

    Patient Review

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    July 21st 2025
    Dr StClair is very concerned about providing the best service for my needs.
    • Patient Review

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      July 21st 2025
      Answered my questions and showed me scans to further explain which helped immensely
    • Patient Review

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      July 10th 2025
      All staff members were great
    • Patient Review

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      July 7th 2025
      So far very good experience
    • Patient Review

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      July 7th 2025
      Great.
    • Patient Review

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      June 16th 2025
      Virginia the nurse was great, very informative. Also, Dr St Clair is one of the best always shows concern
    • Patient Review

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      May 29th 2025
      Good
    • Patient Review

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      May 21st 2025
      Appreciated Dr. St. Clair working me in so I could leave town for the summer.
    • Patient Review

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      May 20th 2025
      Dr. St Clair asked a lot of questions regarding my health.
    • Patient Review

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      May 12th 2025
      Good
    • Patient Review

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      May 6th 2025
      All good.
    • Patient Review

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      May 5th 2025
      Cool
    • Patient Review

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      April 10th 2025
      I wasn't sure what questions to ask. When I mentioned my question may aor may not pertain, Dr. Saint Clair said ask me anything. This attitude was very comforting.
    • Patient Review

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      April 10th 2025
      Dr St Clair and others very concerned and listened.
    • Patient Review

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      March 31st 2025
      Dr. St. Clair made a personal phone call to inform me about the good results. I appreciated it very much!
    • Patient Review

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      March 31st 2025
      I had finished with my radiation treatment and had an elevated PSA score which was unexpected. I tried calling and emailing my doctor but he never responded. Also, I was prescribed a medicine that we had not discussed -
    • Patient Review

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      March 28th 2025
      Excellent Care
    • Patient Review

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      March 27th 2025
      One of the few Doctors that I've seen show so much respect, knowledge, and compassion.
    • Patient Review

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      March 26th 2025
      I am a little bit more at easy about procedures
    • Patient Review

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      March 26th 2025
      I was seen by a resident physician and by Dr. St. Claire. My responses above apply equally well to each of them.
    • Patient Review

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      March 24th 2025
      Great
    • Patient Review

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      March 19th 2025
      I was very impressed with Drs. St Clair and Dr Hensley. Both men made my wife and I very appreciative in their ability to explain my condition of stage 4 cancer and the importance of their recommendations for the hormone and radiation treatments I need to receive.
    • Patient Review

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      March 10th 2025
      Perfect
    • Patient Review

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      March 10th 2025
      Professional and easy to talk to
    • Patient Review

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      February 19th 2025
      Very informative and knowledgeable
    • Patient Review

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      February 11th 2025
      Great doctor
    • Patient Review

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      February 10th 2025
      Everything was very good!
    • Patient Review

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      February 3rd 2025
      Great experience from Drs
    • Patient Review

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      January 27th 2025
      Dr. St Clair has been treating me for nearly ten years. I feel fortunate to have such an excellent doctor.
    • Patient Review

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      January 6th 2025
      Very helpful.
    • Patient Review

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      December 30th 2024
      Was able to communicate with first, Dr Amoah and then both he and Dr St Clair regarding my concerns and coordination with other ongoing medical situations and those care providers
    • Patient Review

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      December 11th 2024
      Both Dr St Claire and Dr Myint ask me questions and listen to my answers. My needs are always factored in decisions.
    • Patient Review

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      December 2nd 2024
      Doctor St. Clair is wonderful.