Thomas Gregory Harrington, M.D., a Long Island native, graduated from St. John the Baptist Diocesan High School and received a Bachelor of Science in Biological Sciences from Binghamton University. He received a Doctorate in Medicine from New York Medical College and went on to complete an internship in General Surgery at S.U.N.Y. at Buffalo.
Thomas Gregory Harrington, M.D., a Long Island native, graduated from St. John the Baptist Diocesan High School and received a Bachelor of Science in Biological Sciences from Binghamton University. He received a Doctorate in Medicine from New York Medical College and went on to complete an internship in General Surgery at S.U.N.Y. at Buffalo.
The reviews listed below were collected independently of Advanced Urology Centers of New York (AUCNY) through rater8. Each review represents an authentic and verified patient experience.
Professional, friendly, straightforward.
(4 days ago)
Aug-2026
Dr. Harrington is a very caring doctor, and has helped me with an ongoing medical issue.
(6 days ago)
Aug-2026
He's the best... Explains everything
(6 days ago)
Aug-2026
Always excellent!
(6 days ago)
Aug-2026
Clearly explains everything
(1 week ago)
Aug-2026
Extremely confident with my dr
(3 weeks ago)
Jul-2026
Best Doctor
(1 month ago)
Jul-2026
Extremely thorough and answered all questions…
(1 month ago)
Jul-2026
Dr. Harrington has a wonderful bedside manner and is extremely comforting towards his patients. The staff is very helpful and supportive.
(1 month ago)
Jul-2026
Very Professional office . Thank you for making me feel comfortable getting my exam .
Thomas Gregory Harrington, M.D., a Long Island native, graduated from St. John the Baptist Diocesan High School and received a Bachelor of Science in Biological Sciences from Binghamton University. He received a Doctorate in Medicine from New York Medical College and went on to complete an internship in General Surgery at S.U.N.Y. at Buffalo. Following a second year of General Surgery at S.U.N.Y. at Stony Brook, he completed his Urology residency at Stony Brook in 1997, during which time he published articles on the subjects of male infertility and urologic trauma.
Dr. Harrington is the Chairman of Urology at St Catherine of Siena Medical Center in Smithtown and has served as Director of the Department of Surgery and also as President of the Medical Staff. He is also on the attending staff at John T. Mather Memorial Hospital and St. Charles Hospital and Rehabilitation Center in Port Jefferson Station, as well as Huntington Hospital. Dr. Harrington is a Diplomate of the American Board of Urology, Fellow of the American College of Surgeons and practices Adult and Pediatric Urology in Smithtown.
Professional, friendly, straightforward.
Dr. Harrington is a very caring doctor, and has helped me with an ongoing medical issue.
He's the best... Explains everything
Always excellent!
Clearly explains everything
Extremely confident with my dr
Best Doctor
Extremely thorough and answered all questions…
Dr. Harrington has a wonderful bedside manner and is extremely comforting towards his patients. The staff is very helpful and supportive.
Very Professional office . Thank you for making me feel comfortable getting my exam .