Medical Oncology & Hematology
Dr. Chu is board-certified in Internal Medicine, Hematology, and Oncology.
After receiving his BS in Biology from Cornell University, Dr. Chu went on to receive his MD at St. Georgeโs University. He did his internship and residency training at Stony Brook University Hospital. He completed his fellowship training at Stony Brook University Hospital and was named Chief Fellow during his last year.
Dr. Chu has faculty appointment of Clinical Instructor and was elected to the Stony Brook Hospital medical board.
He is Chief of the Department of Hematology and Oncology at Mather Hospital and St. Charles Hospital. At Mather Hospital, he serves as Chairman of the Cancer Committee and Chairman of the Breast Program Leadership Committee.
He is the Associate Chief of the Clinical Research Department at New York Cancer Specialists.
Additionally, Dr. Chu is the Program Director of Mather Memorial Hospital's Internal Medicine Residency Division of Hematology-Oncology. He is also the Assistant Program Director of the Mather Memorial Hospital Fellowship Program.
Dr. Chu is a member of the Anticoagulation Committee for Catholic Health Services.
He has co-authored dozens of publications relating to oncology and hematology and has presented his findings at numerous national conferences.
D. Chu has most recently been re-appointed as Assistant
Professor in the Department of Medicine, for the School of Medicine at Hofstra/Northwell.
His interests include lung cancer, lymphomas, and targeted biologic therapeutic agents. Dr. Chu has been proudly recognized as a Top Doctor by Castle Connolly.
| Eastern Long Island Hospital |
| John T Mather Memorial Hospital |
| Long Island Community Hospital |
| Peconic Bay Medical Center |
| St. Catherine Of Siena Medical Center |
| St. Charles Hospital |
| University Hospital at Stony Brook |
Patient Reviews
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"Dr Chu is so kind and reassuring. Appointments rin on time but you still feel like all your questions are address"
from Lynn 5.0 Stars - (2026-01-24) -
"In my first visit with this facility I found everybody who i dealt with from the front desk to the doctor to be just as professional and an overall pleasure as the next. The experience was fantastic."
from Brian 5.0 Stars - (2026-01-23) -
"This office on terry in Smithtown got me in so quick. I got my lab results from my dr and literally within 2 hours I was sitting in dr Chuโs office. In the office there was no waiting and everyone was so kind and helpful as I moved through this process. A process that I only found out that day I needed and while I was initially overwhelmed every person I met here made it much easier. Thank you"
from dorothy 5.0 Stars - (2026-01-22) -
"As always Dr Chu is concerned, caring, listens and has the best advice! I trust him with my medical treatment ๐ฏ. Thank you Dr Chu."
from Lori 5.0 Stars - (2026-01-21) -
"I was very impressed by all of the staff. They were very helpful and polite. Also I was very impressed with Dr Chun. His manner with me made me feel very comfortable. He explained everything so that i
Could understand what was going to happen. I would refer him to p eople'.VERY HAPPY WITH HIM ๐"
from Lorraine 5.0 Stars - (2026-01-15) -
"Dr. Chu took the time to truly see me and listen to my concerns. He explained everything clearly about my treatment and made sure I understood each step of the process. I never felt rushed, and I felt genuinely cared for and well treated. Iโm very grateful for his patience, professionalism, and compassion. Highly recommend Dr. Chu."
from alisha 5.0 Stars - (2026-01-15) -
"โI had a great experience during my visit. The doctor was very kind, patient, and took the time to listen to my concerns. I felt comfortable and well cared for.โ"
from Farnaz 5.0 Stars - (2026-01-14) -
"Great experience with Dr. Chu."
from sania 5.0 Stars - (2026-01-08) -
"Very good care. I felt well taken care of. I really like Dr Chu. I recommend this facility"
from Rory 5.0 Stars - (2026-01-06) -
"Caring Dr., always very thorough, very short waiting time, always a fast follow up. ๐๐๐๐๐"
from Susan 5.0 Stars - (2025-12-20)