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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

  • "he’s been very Informative and he has helped me quite a bit especially when I had my infusion done for my iron low blood. I’ve been feeling great wonderful doctor and wonderful PAs"
      from John 5.0 Stars - (2025-05-24)
  • "A beautiful welcoming calming facility with an amazing staff! I went there to get blood tests and a consult with a hematologist and naturally was very nervous. The staff made me feel very comfortable and kept me calm with their professionalism and patience. Loved Dr. Montana !"
      from Pam 5.0 Stars - (2025-05-22)
  • "Finally a doctor that's going to help me! I've been sick so long and got no answers for years. He knew right away how much I've suffered and what it can be! I'm so very thankful I found him! Absolutely greatful for this doctor because I had lost hope in finding out what exactly I've been battling! I had no hope and he was the last stop because I exhausted several types of doctors with no results, just more questions. Thank you Doctor Montana! My family and I are beyond greatful to you!"
      from Danielle 5.0 Stars - (2025-05-22)
  • "Dr & staff amazing with all question staff taking our blood also amazing. But love Dr Montana I wish could have him as my pCP"
      from Louis 5.0 Stars - (2025-05-22)
  • "Dr Montana is a great doctor who cares about his patients they and they treat you like you and their family really know what they're doing. You will get the best treatment possible!!!"
      from Josph 5.0 Stars - (2025-05-21)
  • "Best of the best !!"
      from Pinky 5.0 Stars - (2025-05-17)
  • "Dr Montana is the absolute best!!!"
      from Thomas 5.0 Stars - (2025-05-17)
  • "I love Dr Montana. He tells you what you need to hear"
      from Dana 4.0 Stars - (2025-05-06)
  • "Dr Montana and staff are always a pleasure to see the best"
      from Thomas 5.0 Stars - (2025-05-04)
  • "Dr Montana and the staff at the Port Jefferson location were excellent. They took the time to listen to my concerns, completed more blood work and scheduled additional appointments as a follow up."
      from Tanice 5.0 Stars - (2025-05-02)