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
Jun 28th, 2025
★★★★★
First time seeing Dr. Alemar. He was very attentive and kind. I walked away feeling like he will get to the bottom of my issues. His staff is also very awesome!!
Review from Google
Jun 26th, 2025
★★★★★
Excellent professional and great person. He helped me through cancer surgery and I am grateful to be cancer free. He keeps track of my blood work and gives me iron infusions as needed. I can’t imagine a better quarterback to organize my healthcare needs. Dr. Alemar is a rockstar in my opinion and his office staff are exceptional. They are polite, respectful and the best you can ask for at making appointments and scheduling tests. The lab is also awesome. I’m a “hard stick” but the phlebotomist are A-1 and make you comfortable too. I am blessed to have such a wonderful team taking care of me.
Review from Google
Jun 24th, 2025
★★★★★
Fantastic doctor and staff
Review from Google
Jun 21st, 2025
★★★★★
Excellent....There is no other doctor I have had or ever had that I trust more. He takes time to explain the challenges and answer all questions. I have recommended him many times to friends who have cancer or relatives of friends who need a doctor.
His staff is tops, including Michelle.
I wish all my doctors were as good, as smart, and as caring.
Review from Google
Jun 20th, 2025
★★★★★
I cannot say enough good things about my first impression of Dr. Dr. Alemar and his entire staff. From the very first visit, it was clear that I was in compassionate, capable hands. He is not only incredibly knowledgeable in hematology and oncology, but also takes the time to explain things thoroughly and patiently. He truly listens and makes you feel like more than just a patient—he treats you like a person, with kindness and respect.
The nursing and office staff are just as exceptional. They were so warm, attentive, towards my father and us as family. They made this difficult journey feel less overwhelming.
It’s rare to find a medical team that combines such high-level expertise with genuine compassion. I’m deeply grateful for their care and support!
Review from Google
