Dr. Alemar is a Board-certified medical oncologist serving Pinellas County since 2005. Born and raised in Mayaguez, Puerto Rico, he received an undergraduate degree from the University of Puerto Rico and received medical training from the same university. Upon moving to the United States and settling in Florida, he pursued a residency in internal medicine and then a fellowship in hematology-oncology at the University of South Florida and H. Lee Moffitt Cancer Center. Dr. Alemar specializes in treating various types of cancer.
He found his passion for medicine and, more specifically, oncology at the young age of 15 after a close friend was diagnosed with lymphoma. He attributes this experience as to what defined his career and loves all aspects of the medical profession, from working with patients to treating simple cases as well as investigating the most challenging and rare diseases. Throughout his career, Dr. Alemar has had the opportunity to partner with physicians from across the country to ensure his patients receive the best care close to home.
“I have a vision for the future of medical oncology and hematology in Pinellas County. The passion to serve my community is stronger than ever. I will be there for you and your loved ones.”
Education and Training
Medical School
University of Puerto Rico
Internship and Residency
University of South Florida
Fellowship
University of South Florida and H. Lee Moffitt Cancer Center
Professional Affiliations
American Medical Association
American College of Physicians
American Society of Hematology
American Society of Clinical Oncology
American College of Chest Physicians
Aug 13th, 2025
★★★★★
Very impressed with the caring, knowlegable doctor & staff. Thank you.
Review from Google
Aug 5th, 2025
★★★★★
Dr Alemar has taken care of me for several years. He is able to understand the whole picture of my unique body and treat it accordingly with it’s unique response to the illness and the medication. Follow up is the same. I have been cancer free for a few years. His staff is top quality and I look forward to seeing them at every appointment.
My late husband Patrick saw him for Radicava IV’s for ALS. We believe it slowed down his illness and was very beneficial to help us through that time of his life.
Review from Google
Aug 1st, 2025
★★★★★
I am grateful for the excellent care I received from Doctor Alemar. From the moment I walked through their doors, I was treated with genuine care, respect, and kindness. Dr. Alemar is incredibly knowledgeable, compassionate, attentive and thorough. He takes the time to listen and explain every step of my treatment and made me feel more at ease and supported than I ever imagined possible.
The office staff deserves equal praise always warm, professional, and organized. Every phone call is answered with patience, every appointment runs smoothly, and I never feel like just another patient. Thank you so much for all you have done for me.
Review from Google
Jul 31st, 2025
★★★★★
The best run medical practice I have ever visited. Great staff. I have trust in Doctor Alemar. We are getting results.
Review from Google
Jul 31st, 2025
★★★★★
The entire staff has been so helpful n kind with my cancer treatments. A big heart felt warm thank you to all of you. You were amazing n saved my life. Dr alemar took the time to sincerely listen and understand what I was thinking about. Thank you Dr alemar I will highly recommend your expertise to any other possible patients n let them know you could possibly heal them as well.
Review from Google
