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Dr. Robert Hendler

Internal Medicine

Robert Hendler, MD is a skilled physician who earned his medical degree from St. George’s University of Medicine. He completed his residency in internal medicine and his fellowship in hematology and oncology at Stony Brook University Hospital. Dr. Hendler has been dedicated to research since 2013. He assisted with the study, the design, and co-authoring the grant proposal for a pilot clinical study to investigate the role of probiotics in colorectal cancer patients receiving chemotherapy. Dr. Hendler was also heavily involved with the research and analysis of clinical trial publications on the adverse effects of Ipilimumab. Dr. Hendler has developed quality improvement measures to enhance his patients’ experience. He is experienced in current hypertension management strategies in diabetic patients and aims to provide the best possible care. Dr. Hendler spends his free time hiking, cooking, swimming, reading literature and meditating. He has numerous publications and is currently board certified in internal medicine.

Credentials:  MD
Education & Training
   Residency:    Stony Brook University
    Medical School:    St. George's University
    Fellowships:    Stony Brook University


Eastern Long Island Hospital
John T Mather Memorial Hospital
Southampton Hospital
St. Catherine Of Siena Medical Center
St. Charles Hospital
Stony Brook University Hospital

Patient Reviews

  • "Staff members are friendly and respectful. Wait times are very minimal"
      from James 5.0 Stars - (2025-10-25)
  • "Dr Hendler is a rare find! Not only is he an outstanding physician, he has an incredible caring bedside manner. Dr. Hendler prides himself on going the extra mile and always listens to his patients. My first experience with Dr. Hendler was when my life partner had head & neck cancer. We needed Hendler‘s expertise on board. He was always available, caring and made a very difficult situation bearable. Now I am going to Dr. Hendler for my own concerns. Looking for a second opinion on my CLL. All I can say is I would recommend Dr. Hendler to anyone!!!"
      from Randy 5.0 Stars - (2025-10-20)
  • "My experience is always a good one. The staff are always kind, knowledgeable and professional."
      from Diana 5.0 Stars - (2025-10-05)
  • "Excellent doctor and staff. Great listener and follow thru."
      from Bob 5.0 Stars - (2025-09-04)
  • "Dr Hendler was so nice and knowledgeable of my blood work. He made me very comfortable. I will be seeing him again"
      from Noreen 5.0 Stars - (2025-08-29)
  • "Very satisfied with my recent visit to the Smithtown location to see Dr. Handler. Everyone was great in the check in area, phlebotomist made it easy and painless. Dr. Handler explained everything to me clearly. Excellent service."
      from Carol 5.0 Stars - (2025-08-15)
  • "I never have a bad time with N. Y. Cancer and Blood, everyone is always nice and friendly. Dr Hendler is always on top of things and is very direct...doesn't beat around the bush, I like that in a Doctor."
      from thomas 5.0 Stars - (2025-08-09)
  • "Professional and caring"
      from Ronald 5.0 Stars - (2025-07-30)
  • "If you want the man with a plan, Dr.Hendler is the man. THANK YOU DR. HENDLER. LOOKING TO SEE YOU SOON."
      from eugene 5.0 Stars - (2025-07-23)
  • "Good visit with the PA and Dr Hendler."
      from dakota 5.0 Stars - (2025-05-08)