LK DENTAL GROUP - Key Persons


Dr. Charles Leo

Dr. Leo has always called Suffolk County home and never strayed far from the tri-state area, even for his education. In 1992, he graduated from Chaminade High School in Mineola and moved on to Fairfield University in Fairfield, Connecticut where he achieved his Bachelor of Science degree. At New York University College of Dentistry, Dr. Leo earned his degree in dental surgery and graduated OKU - Dental National Honor Society. For the next two years, Dr. Leo trained voluntarily at Staten Island University Hospital. During his second year there, he acted as Chief Dental Resident overseeing fourteen first year residents while furthering his education with advanced and difficult cases. In 2001 Dr. Leo began working as an associate with his childhood friend and dentist, Dr. Arthur Marchiano. Dr. Marchiano retired in 2003 and Dr. Leo took over the practice at 2050 Deer Park Avenue in Deer Park, New York. He then served as an attending at Staten Island University Hospital while maintaining a full-time practice in Deer Park. He works very closely with his partner in the practice, Dr. Koys, and numerous other staff members providing quality dental care in a clean, caring and modern setting. He enjoys all phases of dentistry and has stayed on the cutting edge of advanced dental techniques. Dr. Leo is married to his beautiful wife Dana and has two children, Charles Ryan and Emma Lynn. He resides in Commack, New York and enjoys life on Long Island.

Dr. Peter Koys

Dr. Peter Koys grew up in the Bronx and attended Herbert H. Lehman High School. He then completed his undergraduate studies at Manhattan College in Riverdale obtaining a Bachelor of Science degree in Biology. Dr. Koys received his Doctor of Dental Surgery degree from New York University College of Dentistry in 2005. He then continued his education by doing an elective residency at Staten Island University Hospital. Following his first year of residency, he was asked to stay on at the hospital for a second year serving as Chief Resident of the General Dentistry program. Upon completion of his Chief Resident year, Dr. Koys was hired by the hospital as an Attending Doctor in the Department of Dental Medicine, where he oversaw and taught residents in the program. Dr. Koys has been working closely with Dr. Charles Leo since 2005 and became a full partner in the practice in 2014. He currently resides in eastern Suffolk with his wife Alyssa and sons Justin & Dean. Dr. Koys looks forward to continuing to provide high quality dental care for the Long Island community.