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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

  • "Always a pleasant experience. Wonderful caring staff! Thanks again for the quality care Dr. Montana!"
      from Tamara 5.0 Stars - (2025-10-26)
  • "I have to always be aware of my hemoglobin level and occasionally have blood drawn to lower my level. The staff there is very professional and always takes wonderful care of me when I am there. I always leave there feeling the genuine concern and care that this staff has for its patients....🙏🙏...for this, I say "thank you!""
      from Eric 5.0 Stars - (2025-10-26)
  • "Dr Montana is the best doctor I have ever had. I wasn't happy the first time I met him and he helped me through cancer and made my life Wonderful for 6 years!"
      from Deborah 5.0 Stars - (2025-10-23)
  • "I've been using Dr Montana for years. He and his staff are professional, knowledgeable and very pleasant. I would highly recommend the practice to anyone in need."
      from John 5.0 Stars - (2025-10-22)
  • "Excellent and thorough care."
      from Regor 5.0 Stars - (2025-10-21)
  • "I have been a patient of Dr. Montana for a decade! He is an amazing Dr who is patient, thorough and allows me as the patient to feel comfortable. Explains so I can understand. Highly recommend!!"
      from Melissa 5.0 Stars - (2025-10-14)
  • "Very peaceful n healthy as pleasant as the staff. Wonderful visit."
      from Hilda 5.0 Stars - (2025-10-10)
  • "Always a great experience"
      from Michael 5.0 Stars - (2025-10-08)
  • "Overall was great. Staff is very nice. Staff worked hard to squeeze me in for an appointment to get clearance."
      from Kelly 4.0 Stars - (2025-10-03)
  • "This man saved my life I will forever be grateful"
      from Atalia 5.0 Stars - (2025-09-22)