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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

  • "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)
  • "The Dr. Were very helpful, and reassuring i got there quite anxious and leave very relaxed and confident in the treatment I receive. Thanks Dr chu and his staff."
      from Glaister 5.0 Stars - (2025-11-08)
  • "Excellent care. Very knowledgeable and professional!"
      from Chris 5.0 Stars - (2025-11-06)
  • "Loved Dr Chu"
      from Debbie 5.0 Stars - (2025-11-01)
  • "The staff is very nice I highly recommend this place"
      from Billy 5.0 Stars - (2025-10-30)
  • "Love Dr. Chu! He’s so down to earth on top of being so knowledgeable."
      from Frances 5.0 Stars - (2025-10-25)
  • "This is a new cancer and blood for me. The staff and nurses were very nice. The took care of me and were very efficient."
      from Pat 5.0 Stars - (2025-10-18)
  • "It was an all-around great experience. The service was fast and efficient with same-day results and the staff was friendly and accommodating."
      from Margaret 5.0 Stars - (2025-10-14)