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Dennis O'Brien, MD, Internal Medicine, Ticonderoga, NY

DennisSO'BrienMD

Internal Medicine • Ticonderoga, NY

Physician

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Summary

  • Dr. Dennis O'Brien, MD is a board certified internist in Ticonderoga, New York. He is currently licensed to practice medicine in New York, Illinois, and Montana.

Education & Training

  • Stony Brook Medicine/University Hospital
    Stony Brook Medicine/University HospitalResidency, Internal Medicine, 1982 - 1983
  • Hackensack University Medical Center (Mountainside)
    Hackensack University Medical Center (Mountainside)Residency, Internal Medicine, 1980 - 1982
  • Victor Segalen University - Bordeaux College of Medicine
    Victor Segalen University - Bordeaux College of MedicineClass of 1980

Certifications & Licensure

  • NY State Medical License
    NY State Medical License 1983 - 2025
  • IL State Medical License
    IL State Medical License 2007 - 2020
  • MT State Medical License
    MT State Medical License 2007 - 2019
  • NJ State Medical License
    NJ State Medical License 1981 - 1991
  • American Board of Internal Medicine Internal Medicine

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