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Dr. David Chu

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.

Credentials:  MD
Education & Training
   FACP:    State University of New York at Stony Brook
    Residency:    State University of New York at Stony Brook
    Medical School:    St. George's University School of Medicine
    College:    Cornell University


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

  • "Excellent experience. Dr chu is so wonderful. Took the time to answer any question. Very polite. The staff is wonderful, caring and kind"
      from Debbie 5.0 Stars - (2025-08-30)
  • "I like dr chu because he is a great person and very friendly and he cares about me and everyone else and my mom went to him and he took good care of my mom. I wil continue to go to him"
      from Barbara 5.0 Stars - (2025-08-28)
  • "Dr. Chu is the best"
      from Jeep 5.0 Stars - (2025-08-26)
  • "Excellent staff!"
      from Theresa 5.0 Stars - (2025-08-23)
  • "He's an awsome doctor"
      from Mary 5.0 Stars - (2025-08-23)
  • "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)