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. George’s 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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"No complaints everyone staff, and doctors all respectable and courteous."
from Loretta 5.0 Stars - (2025-08-08) -
"Staff is very pleasant. I am very satisfied with Dr Chu. He is informative and thorough"
from Paula 5.0 Stars - (2025-07-31) -
"The staff and Doctors are extremely friendly and accommodating, which immediately puts one at ease. I highly recommend this practice to anyone who is interested."
from Robert 5.0 Stars - (2025-07-28) -
"Receptionists were very friendly. Dr. Chu is very professionally to approach me as a patient. One thing I don’t like is to take a very long time to complete the patient’s health survey. These should be finished by sending an E mail with survey questions or a link."
from Hsiang-Kuang 5.0 Stars - (2025-07-26) -
"Dr Chu is very personable and he and his staff are very caring. Thank you."
from Dolores 5.0 Stars - (2025-07-24) -
"Great first experience. Doctor and NP. Was wonderful and explained everything.."
from Wendy 5.0 Stars - (2025-07-23) -
"Always a pleasure to see Dr Chu. He is by far the best doctor that I see and his bedside manner is impeccable. Thank you for taking such good care of me for the past idk how many years and I will see u for my follow up in 6 months."
from BEANZTV 5.0 Stars - (2025-07-18) -
"Dr. Chu and his staff are fabulous. They care about their patients and work together to provide the best care to their patients. Highly recommend them!!"
from Lena 5.0 Stars - (2025-07-17) -
"Excellent service: facility very clean and organized. Staff professional. Physicians, especially Dr. Chu, knowledgeable and you feel confident in his advice."
from Henry 5.0 Stars - (2025-07-16) -
"Everyone is very polite and efficient allowing you to pump through endless bodies like a smooth running engine but have deleted the ability to develope any kind of comfort in a relationship to develope between Dr. and patient . This doesn’t allow for a complete diagnosis ! Without a full grasp of the patients lifestyle , occupation and environment a complete picture isn’t shared . With a different PA every visit that lasts just 10 minutes the patient also doesn’t feel comfortable to sometimes share and typically isn’t asked . They simply want to know if you have any medication changes and give you your blood results ."
from Alice 4.0 Stars - (2025-07-13)