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“Patients always come first for me. I treat everyone as relatives and friends. I will give everyone my best, every time!”

Provider Bio down arrow

Dr. Adedayo Onitilo is the director of Cancer Care and Research. He is principal investigator of WinCORP, which provides access to NCI-sponsored clinical trials to more than 680,000 people in Wisconsin, and parts of Michigan, Iowa and Minnesota. He is editor-in-chief for Clinical Medicine and Research, a publication of original scientific medical research. He also holds a clinical faculty position at the University of Wisconsin.

Dr. Onitilo enjoys working in the Health System because it allows him to practice exceptional medicine and conduct landmark research. “It’s rare to be able to wear both hats,” he said. “We are doing groundbreaking research now that may help patients worldwide.”

Dr. Onitilo is board certified in internal medicine, hematology, medical oncology and hospice and palliative medicine. He earned his medical degree at Ogun State University in Nigeria. He did his residency at Columbia University, College of Physicians and Surgeons - Harlem Hospital in New York. Dr. Onitilo completed a fellowship in oncology/ hematology and earned a master of science degree in clinical research at the Medical University of South Carolina. He earned a doctorate degree in epidemiology from The University of Queensland, Australia. Dr. Onitilo is a member of the Wisconsin chapter of the American Cancer Society and Wisconsin Cancer Council steering committee.

In his spare time, you’ll find Dr. Onitilo displaying his ping-pong skills or working on his golf game. As a physician who has lived and practiced throughout the world, he loves to travel and meet new people. He is happily married with children.​

Professional Summary down arrow

  • Medical School
    Ogun State University Sagamu, Ogun State, Nigeria, M.D. 1995

    Internship
    Columbia University College of Physicians & Surgeons - Harlem Hospital Center New York, NY, United States, Internal Medicine 1999

    Residency
    Columbia University College of Physicians & Surgeons - Harlem Hospital Center New York, NY, United States, Internal Medicine 2001

    Fellowship
    Medical University of South Carolina Charleston, SC, United States Master of Science - Clinical Research 2004

    Medical University of South Carolina Charleston, SC, United States Oncology/Hematology 2004

  • Academic Appointments
    Clinical Associate Professor, Department of Medicine-University of Wisconsin School of Medicine and Public Health Madison, WI

    Professional Societies
    American College of Physicians American Society of Clinical Oncology American Society of Hematology International Society for Experimental Hematology

    Board Certifications
    Hematology: 2004, recertified 2014 Hospice & Palliative Medicine: 2005 Internal Medicine: 2002, recertified 2012 Medical Oncology: 2004, recertified 2014

    State Licenses
    South Carolina Wisconsin

    Areas of Interest
    Associate Editor, Clinical Medicine & Research Journal Clinical Practice & Research

Patient Ratings down arrow

4.6
out of 5 (187 ratings, 24 comments)
4.6
Provider explanations of my problem
4.6
Provider concern for my questions
4.6
Provider's efforts to include me in treatment decisions
4.5
Provider's discussion of proposed treatment
4.6
My likelihood of recommending this provider

Patient Comments down arrow

Comments are also gathered from the Press Ganey patient satisfaction survey and displayed in their entirety with the exception of any language that may be considered slander, libel or contain private health information, which will be removed prior to publishing.
Comments are from Press Ganey surveys. Slander, libel and private health information are removed.
Sort by:
December 5, 2021
I had great care.
December 15, 2021
Marshfield Clinic has been very GREAT! Very positive experience for this awful time.
December 30, 2021
Great experience!
January 11, 2022
Fantastic.
February 8, 2022
I trust Dr. Onitilo with my life.
February 22, 2022
Onitillo was as usual extremely smart and professional. There was a little difference on this visit, though! Onitillo showed personality and bedside manner ..very kind. I don't go to him for bedside...view full comment
April 26, 2022
Would recommend care provider to anyone.
April 27, 2022
I am very satisfied with Dr Onitilo's research and care of my disease and of my well being.
April 29, 2022
he was "easy to talk with!"
May 6, 2022
Very professional, highly educated and empathetic team.
June 16, 2022
Dr. Onitilo is a great provider who listens to your questions and concerns.
June 21, 2022
Very nice.
July 20, 2022
Very wonderful doctor - explains everything - takes time with me.
July 20, 2022
Dr. Onitilo is awesome.
July 20, 2022
Very good experience overall.
August 19, 2022
My doctor, did an excellent job, I feel very well taken care of and trust him to do what is best for me.
September 22, 2022
Dr. Onitilo and his staff are the very best!!
September 23, 2022
It would be nice if we could get more information to take home and receive.
July 20, 2022
Great doctor!
October 21, 2022
Dr. was unable to discuss condition as labs weren't back.
January 7, 2022
All went well.
March 1, 2022
Good interaction but seemed mundane & matter of fact.
October 28, 2022
Dr. Onitilo shared little concern for my symptoms & well being.
February 28, 2022
No rating given
I don't remember any of the discussion with Dr. Onitilo except he saying everything was fine and he would see me in 6 months. No written results. The appt. was over before the scheduled time were given to me.
February 28, 2022
No rating given
I don't remember any of the discussion with Dr. Onitilo except he saying everything was fine and he would see me in 6 months. No written results. The appt. was over before the scheduled time were given to me.
October 28, 2022
Dr. Onitilo shared little concern for my symptoms & well being.
January 7, 2022
All went well.
March 1, 2022
Good interaction but seemed mundane & matter of fact.
October 21, 2022
Dr. was unable to discuss condition as labs weren't back.
July 20, 2022
Great doctor!
December 5, 2021
I had great care.
December 15, 2021
Marshfield Clinic has been very GREAT! Very positive experience for this awful time.
December 30, 2021
Great experience!
January 11, 2022
Fantastic.
February 8, 2022
I trust Dr. Onitilo with my life.
February 22, 2022
Onitillo was as usual extremely smart and professional. There was a little difference on this visit, though! Onitillo showed personality and bedside manner ..very kind. I don't go to him for bedside...view full comment
April 26, 2022
Would recommend care provider to anyone.
April 27, 2022
I am very satisfied with Dr Onitilo's research and care of my disease and of my well being.
April 29, 2022
he was "easy to talk with!"
May 6, 2022
Very professional, highly educated and empathetic team.
June 16, 2022
Dr. Onitilo is a great provider who listens to your questions and concerns.
June 21, 2022
Very nice.
July 20, 2022
Very wonderful doctor - explains everything - takes time with me.
July 20, 2022
Dr. Onitilo is awesome.
July 20, 2022
Very good experience overall.
August 19, 2022
My doctor, did an excellent job, I feel very well taken care of and trust him to do what is best for me.
September 22, 2022
Dr. Onitilo and his staff are the very best!!
September 23, 2022
It would be nice if we could get more information to take home and receive.
December 5, 2021
I had great care.
December 15, 2021
Marshfield Clinic has been very GREAT! Very positive experience for this awful time.
December 30, 2021
Great experience!
January 7, 2022
All went well.
January 11, 2022
Fantastic.
February 8, 2022
I trust Dr. Onitilo with my life.
February 22, 2022
Onitillo was as usual extremely smart and professional. There was a little difference on this visit, though! Onitillo showed personality and bedside manner ..very kind. I don't go to him for bedside...view full comment
February 28, 2022
No rating given
I don't remember any of the discussion with Dr. Onitilo except he saying everything was fine and he would see me in 6 months. No written results. The appt. was over before the scheduled time were given to me.
March 1, 2022
Good interaction but seemed mundane & matter of fact.
April 26, 2022
Would recommend care provider to anyone.
April 27, 2022
I am very satisfied with Dr Onitilo's research and care of my disease and of my well being.
April 29, 2022
he was "easy to talk with!"
May 6, 2022
Very professional, highly educated and empathetic team.
June 16, 2022
Dr. Onitilo is a great provider who listens to your questions and concerns.
June 21, 2022
Very nice.
July 20, 2022
Very wonderful doctor - explains everything - takes time with me.
July 20, 2022
Dr. Onitilo is awesome.
July 20, 2022
Great doctor!
July 20, 2022
Very good experience overall.
August 19, 2022
My doctor, did an excellent job, I feel very well taken care of and trust him to do what is best for me.
September 22, 2022
Dr. Onitilo and his staff are the very best!!
September 23, 2022
It would be nice if we could get more information to take home and receive.
October 21, 2022
Dr. was unable to discuss condition as labs weren't back.
October 28, 2022
Dr. Onitilo shared little concern for my symptoms & well being.
October 28, 2022
Dr. Onitilo shared little concern for my symptoms & well being.
October 21, 2022
Dr. was unable to discuss condition as labs weren't back.
September 23, 2022
It would be nice if we could get more information to take home and receive.
September 22, 2022
Dr. Onitilo and his staff are the very best!!
August 19, 2022
My doctor, did an excellent job, I feel very well taken care of and trust him to do what is best for me.
July 20, 2022
Very wonderful doctor - explains everything - takes time with me.
July 20, 2022
Dr. Onitilo is awesome.
July 20, 2022
Great doctor!
July 20, 2022
Very good experience overall.
June 21, 2022
Very nice.
June 16, 2022
Dr. Onitilo is a great provider who listens to your questions and concerns.
May 6, 2022
Very professional, highly educated and empathetic team.
April 29, 2022
he was "easy to talk with!"
April 27, 2022
I am very satisfied with Dr Onitilo's research and care of my disease and of my well being.
April 26, 2022
Would recommend care provider to anyone.
March 1, 2022
Good interaction but seemed mundane & matter of fact.
February 28, 2022
No rating given
I don't remember any of the discussion with Dr. Onitilo except he saying everything was fine and he would see me in 6 months. No written results. The appt. was over before the scheduled time were given to me.
February 22, 2022
Onitillo was as usual extremely smart and professional. There was a little difference on this visit, though! Onitillo showed personality and bedside manner ..very kind. I don't go to him for bedside...view full comment
February 8, 2022
I trust Dr. Onitilo with my life.
January 11, 2022
Fantastic.
January 7, 2022
All went well.
December 30, 2021
Great experience!
December 15, 2021
Marshfield Clinic has been very GREAT! Very positive experience for this awful time.
December 5, 2021
I had great care.

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