Dr. Cillis was born in the Bronx and raised largely in Yonkers. He went to undergrad at Arkansas College and attended Veterinary school at the University of Messina, graduating in 1979, first in his class. His first veterinary position was in Mamaroneck, New York. From there he became a partner in a large veterinary practice in Peekskill, New York for 14 years. The practice was very large and busy where he gained extensive experience, especially in surgery from traumatic injuries. In 1996 he left the partnership to begin his own solo practice from scratch which he operated very happily for many years. Now, he is enjoying working 2 days per week at North Rockland Animal Hospital. Dr. Cillis fills the rest of his days by spending time with his two wonderful grandchildren, who fortunately live very close to him and his wife of 39 years. He also volunteers a lot of his free time to the Yorktown Volunteer Ambulance Corp where he serves as both an EMT and a line officer in the position of training officer. Until recently he had 2 dogs (Fluffers and Pluto, both named by his children) who were rescued from situations where they were not properly cared for, but unfortunately after many years of wonderful companionship age caught up with them and they are no longer with us. Dr. Cillis now cares for a diabetic cat named Herbie, (who is also a rescue). Being a tropical fish aficionado, Dr. Cillis also has 2 large tanks in his home study.