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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"Everyone at this office was very nice and caring."
from Virginia 5.0 Stars - (2025-12-12) -
"Staff is always compassionate and helpful"
from Mike 5.0 Stars - (2025-12-11) -
"As always everyone is really nice, friendly and professional. Always a nice experience!"
from Lynne 5.0 Stars - (2025-12-11) -
"Dr. David Chu is super nice and compassionate. He's a very caring person!"
from David 5.0 Stars - (2025-12-06) -
"Everyone the i have talk to seems so very respectful and kind I definitely would recommend any family members or friends to go there and I really appreciate it ❤️"
from D 5.0 Stars - (2025-12-05) -
"Making an appt was easy and quick, upon arrival staff was cordial and professional. Environment was clean and comforting. Dr D.Chu was absolutely charming and charismatic he made me feel at ease and I left feeling confident that I was in good hands of someone who was knowledgeable, professional and caring. I would highly recommend this office !"
from Jessica 5.0 Stars - (2025-12-04) -
"Dr Chu is great. He explains things in layman’s terms.
Easy to understand.
I appreciate his professionalism."
from Neal 5.0 Stars - (2025-11-26) -
"Dr Dave Chu and staff are great"
from Rita 5.0 Stars - (2025-11-23) -
"Attention to details, friendly, on time. Dr. Chu knew my health history and advised me how to improve and speed up my recovery. Everybody in the office is friendly and helpful. Thanks"
from Ray 5.0 Stars - (2025-11-20) -
"The staff is very friendly and efficient. There was no waiting time to get blood drawn and to see the doctor."
from Madeleine 5.0 Stars - (2025-11-13)