Dr. Sheehan attended St. John's University where he earned a Bachelor of Science degree in Biology in 1981. After completing his D.M.D. at Fairleigh Dickinson in 1985, Dr. Sheehan completed his residency at Long Island Jewish Medical Center, where he is currently an attending. Dr. Sheehan has been the Chief of the Division of Dentistry and Oral Surgery at St. Francis Hospital for over twenty years. He has been in practice at both the St. Francis and Northern Boulevard locations since 1986. He is a member of the American Dental Association, New York State Dental Association, Nassau County Dental Society, and the Staff Societies of St. Francis Hospital and Long Island Jewish Medical Center. He resides in Port Washington with his wife, and four daughters.

Dr. Mendocha attended Washington & Lee University, where she earned a Bachelor of Science degree in Neuroscience and Biology in 1999. After completing her D.D.S. at Stony Brook in 2003, Dr. Mendocha completed residency at Long Island Jewish Medical Center and there was distinguished as Chief Resident. Dr. Mendocha is also an assistant attending at St. Francis Hospital. She is a member of the American Dental Association, New York State Dental Association, and the Nassau County Dental Society. She resides in Garden City with her husband and three daughters.

Dr. Han attended SUNY at Albany, where she earned a Bachelor of Science degree in Chemistry in 2009. After completing her D.D.S. at SUNY at Buffalo in 2014, Dr. Han completed residency at Long Island Jewish Hospital where she was trained by Dr. Sheehan. She is a member of the American Dental Association, New York State Dental Association, and the Nassau County Dental Society. She resides in Garden City with her husband and daughter.