Dr. Carlos M. Castillo

  • MD
  • Medical Oncologist
  • Spoken languages English, Spanish


Carlos Castillo, MD is board-certified in Internal Medicine and Medical Oncology and has nearly 20 years of oncology and hematology experience. He recently served as Medical Director of the Lower Keys Cancer Center in Key West, providing the only oncology care with GenesisCare to the Lower Keys. After serving as a Regional Consultant in Hematology Oncology since the 1990’s, providing research, education and patient care to the North East Florida, he joined GenesisCare in Jacksonville in 2008. Dr. Castillo earned his Medical Doctor degree from the University of Puerto Rico School of Medicine in Rio Piedras, PR, and completed his residency in Internal Medicine and Fellowship in Hematology/Oncology at University of Florida.

Career Positions

Current position(s)

  • GenesisCare of Jacksonville, Medical Oncology Division - Medical Oncologist, Jacksonville, FL

Past position(s)

  • Jacksonville Oncology Group - Medical Oncologist, Jacksonville, FL



  • University of Puerto Rico, Bachelor of Science, Graduated Cum Laude, Rio Piedras, Puerto Rico
  • University of Puerto Rico School of Medicine, Doctor of Medicine, Rio Piedras, Puerto Rico


  • University of Florida Health Science Center, Internal Medicine, Jacksonville, FL


  • University of Texas Health Science School of San Antonio, Internal Medicine, San Antonio, TX


  • University of Florida Health Science Center, Hematology and Oncology, Jacksonville, FL

Professional associations


Awards and honors

  • cum laude at University of Puerto Rico, Vitals Patients' Choice Award

Carlos Castillo's Reviews


based on 30 Ratings 5 Comments


it's my favorite dr office to go to


I can't think of anything wrong. My visit went great!!!!


Dr. Castillo has been my doctor for 17 years and he is the most amazing, excellent doctor out there. Thank you.


I love ?? sweet people

Read More

Ratings and Comments Powered by NRC Health