Headshot of Dr. Steven Montana DO
MAKE AN APPOINTMENT


Languages: English

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

  • "Everyone is very professional and caring"
      from judy 5.0 Stars - (2025-07-04)
  • "I’ve been seeing Dr. Montana since 2012. He always takes time With you making sure that all your needs are met never rushes you out always checks up on everything to see if there’s any need you have and will always contact doctors if you want him to refer you. If there are any lab results that need to be discussed, he personally calls me Everything to me, I wouldn’t trade them for anything. He’s very professional and I recommend him to anyone. Barbara D."
      from Barbara 5.0 Stars - (2025-06-27)
  • "Dr. Montana was amazing. This was my first time in this office and with Dr. Montana. He was very knowledgable but not condescending, like I have experienced with other doctors in the past. He helped me to feel like I was in good hands. I have been so nervous about my pain and it was great to feel like I was finally getting to the root of it with someone who cares."
      from danielle 5.0 Stars - (2025-06-24)
  • "Always on time and excellent service"
      from santos 5.0 Stars - (2025-06-24)
  • "Dr Montana is wonderful always listens to you and ready to help you however he can the staff is so kind and helpful"
      from Sharon 5.0 Stars - (2025-06-20)
  • "Great staff. Caring and very attentive to your needs. Have been a patient there for many years and I have never had one issue. Dr. Decosta and his Aid of fabulous and caring. Thank you for your service."
      from Keith 5.0 Stars - (2025-06-19)
  • "Everyone was so professional and so helpful. Made me feel very comfortable."
      from karen 5.0 Stars - (2025-06-15)
  • "Amazing staff always ready to help you with any problem you have. Dr Montana is an incredible doctor. We always leave knowing exactly what's happening. Never rushes you and talks to you like family. I would highly recommend Dr. Montana and his office"
      from dawn 5.0 Stars - (2025-06-06)
  • "Very professional."
      from Lee 5.0 Stars - (2025-06-01)
  • "I have been under Dr. Montana’s care for almost 25 years and I cannot speak highly enough of Dr. Montana and the exceptional care he provides. As a patient, finding a physician who is not only a brilliant medical expert but also truly compassionate and attentive is rare—and Dr. Montana exemplifies both qualities in every possible way. From the moment you walk into his office, it’s clear that you are in the hands of someone who is not only deeply knowledgeable but also genuinely invested in your well-being. Dr. Montana takes the time to listen carefully, explain complex medical information with clarity and patience, and ensures that every concern is addressed. He never rushes appointments and always makes you feel like your health is his top priority. What truly sets Dr. Montana apart is his extraordinary combination of clinical excellence and human warmth. His sensitivity to the emotional aspects of care—especially when navigating difficult or uncertain diagnoses—is nothing short of remarkable. He speaks with honesty, but always with empathy, kindness, and a calm reassurance that brings real comfort during challenging times. In addition to his outstanding bedside manner, Dr. Montana is a recognized leader in the field of hematology. His expertise is matched by his ongoing commitment to research, education, and innovation. It’s incredibly reassuring to know that you’re being guided by someone so well-respected by colleagues and deeply dedicated to advancing care for patients. I feel incredibly fortunate to be under Dr. Montana’s care. He is a rare and extraordinary physician—thorough, kind, sensitive, and a true expert in his field. I would recommend him without hesitation to anyone seeking compassionate, top-tier hematologic care."
      from Michelle 5.0 Stars - (2025-05-29)