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Dr. Steven Montana

Medical Oncology & Hematology

Steven Montana, DO is board certified in hematology and medical oncology. He has been a practicing medical hematologist and oncologist on Long Island, NY since 1998.

Dr. Montana received his Bachelor’s degree in Biology from Hofstra University in Hempstead, before attending The New York College of Osteopathic Medicine in Old Westbury, NY where he received his D.O. During this time, he also completed a rotating internship at Saint Clare’s Hospital and Medical Center. Following his internship, Dr. Montana completed his Internal Medical Residency at Saint Vincent’s Hospital and Medical Center and then continued to Stony Brook University for his fellowship where he participated in basic science cancer research studies.

Since then, Dr. Montana has been the co-author of several medical publications. Dr. Montana treats patients at our Port Jefferson and Smithtown offices. Many of his special areas of interest include gastrointestinal cancers, lung cancer, lymphoma, and malignant/nonmalignant hematology.

Credentials:  DO
Education & Training
   FACP:    State University of New York at Stony Brook
    Residency:    St. Vincent's Hospital and Medical Center
    Medical School:    New York College of Osteopathic Medicine
    College:    Hofstra University


John T Mather Memorial Hospital
Peconic Bay Medical Center
Southside Hospital
St. Catherine Of Siena Medical Center
St. Charles Hospital

Patient Reviews

  • "There's not much of a wait time. 👍 Everyone who works there, is extremely pleasant and knowledgeable."
      from Catherine 5.0 Stars - (2025-12-04)
  • "Everyone in the office was pleasant and caring Dr Montana was caring also his assistant"
      from Barbara 5.0 Stars - (2025-12-01)
  • "Everyone is very helpful. Dr. Montana is patient, thorough and knowledgeable, as is his staff. They make an uncomfortable situation tolerable."
      from Carol 5.0 Stars - (2025-11-29)
  • "I can recommend Dr.Montana to anybody He listens to my concerns , has a nice personality and is easy to talk to . His staff is also accommodating and friendly. ⭐️⭐️⭐️⭐️⭐️"
      from Elke 5.0 Stars - (2025-11-28)
  • "The entire staff is a pleasure to work with. A special Thank You to Sandy for her personality, and time answering all questions. Hope to work with her in the future."
      from Rich 5.0 Stars - (2025-11-27)
  • "Very knowledgeable explains treatment in terms you can understand takes his time explaining any questions you may have"
      from Frank 5.0 Stars - (2025-11-19)
  • "While a patient at St. Charles Hospital Dr Montana explained everything to me in such a. thoughtful and caring way. He put me at ease and helped me through a rough time. I highly recommend him."
      from Marilyn 5.0 Stars - (2025-11-18)
  • "Dr Montana Is a very caring concerning Doctor. I would highly recommend him."
      from Gail 5.0 Stars - (2025-11-15)
  • "Dr Montana is the best"
      from carlos 5.0 Stars - (2025-11-14)
  • "Dr. Montana was very attentive to my concerns."
      from Jim 5.0 Stars - (2025-11-09)