Why Choose Us

Thad R. Denehy, MD, FACOG, FACS


Dr. Denehy was featured in the August 31, 2018 issue of the RWJBarnabas Newsletter for performing his 1,000th robotic surgery case at Saint Barnabas Medical Center. Read more about this impressive milestone today!


Dr. Denehy's experience, compassion and surgical skills have gained him recognition in several well regarded publications. He has been selected by his peers for over 10 consecutive years in Castle Connolly's "Top Doctors in the New York Metro Area". Additionally, Dr. Denehy has also been selected as one of the "Best Doctors" in New Jersey, NJ Savvy, New Jersey Monthly, Inside Jersey and New York magazines.

Dr. Denehy has been associate director and a physician in the division of Gynecologic Oncology and Reconstructive Surgery at the Saint Barnabas Medical Center since 1990, and co-director of this division since 2003. He completed a residency in Obstetrics and Gynecology at Saint Barnabas Medical Center, a gynecologic oncology fellowship at the University of Rochester's Strong Memorial Hospital and gained experience at Addis Ababa Fistula Hospital in Addis Ababa, Ethiopia. 

Dr. Denehy is honored and proud to have been trained, mentored and a partner of both James L. Breen, MD (Past President of the American College of Obstetricians and Gynecologists, as well as the Society of Gynecologic Surgeons and Chairman of Obstetrics and Gynecology at Saint Barnabas Medical Center 1969-2002) and Caterina A. Gregori, MD (first female board certified Gynecologic Oncologist, past president of the Society of Gynecologic Surgeons and Vice-Chairman of Obstetrics and Gynecology at Saint Barnabas Medical Center 1969-2002). Under the tutelage of these Master Surgeons, Dr. Denehy received unparalleled training in all facets of abdominal and vaginal pelvic surgery.

Dr. Denehy continues this tradition, having been personally involved in the training of over 120 gynecologists currently practicing today in the Tri-State region and across the country. Dr. Denehy is annually board certified in both Obstetrics/Gynecology and Gynecologic Oncology.

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