Thomas S. Davis, MD

Thomas S. Davis, MD

Medical Oncology, Hematology
Languages Spoken


Thomas S. Davis, MD, is board-certified in hematology and oncology and practices at Cancer Specialists of North Florida's (CSNF) Riverside location. Dr. Davis joined CSNF in 2005, and currently serves as the Chair of Hematology and Oncology for Ascension St. Vincent’s Hospital. Originally from Northern New Jersey, he completed his undergraduate degree at Wesleyan University before earning two master’s degrees and his Doctor of Medicine. He subsequently served in the US Navy, completing his internship at the National Naval Medical Center in Bethesda, Maryland. As the General Medical Officer for the USMC Chemical Biological Incident Response Force, he was responsible for the national and international training of first responders and medical personnel.

On completion of his military service, Dr. Davis completed further training at Cornell, New York Hospital, and Memorial Sloan Kettering Hospital for internal medicine, before completing a fellowship at Dartmouth-Hitchcock Medical Center. In addition, he assisted in the response to 9/11 at New York Hospital, something he calls one of his proudest moments and one he will never forget.

Dr. Davis chose to join CSNF because of the cutting-edge therapies not typically found in smaller areas like North Florida. He believes that the CSNF community exhibits a level of dedication to patients that is second to none.

When not at work, he enjoys spending time with his wife and young daughter, traveling, carpentry, hiking, and reading.



  • New York Medical College


  • Dartmouth-Hitchcock Medical Center


  • Weill Medical College of Cornell University


  • National Naval Medical Center


Hospital Affiliations

  • Ascension St. Vincent's Clay County Hospital
  • Ascension St. Vincent's Riverside Hospital
  • Ascension St. Vincent's Southside Hospital
  • Ascension St. Vincent's St Johns County Hospital


  • The American Board of Internal Medicine - Hematology
  • The American Board of Internal Medicine - Medical Oncology
Professional Statement
I’m very proud to have been part of bringing clinical trials and immunotherapy options to the people of Jacksonville.
- Thomas S. Davis, MD


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Why Ascension
Ascension doctors are committed to getting to know you. They take time for real back-and-forth conversations with you so they can understand all aspects of you and your life. Because great care starts with seeing your whole picture.