Dr. O'Brian has been my doctor for a number of years prior to being with MDVIP. He and his staff have always tried to give the best of service. He has always had a warm word to greet you with. His humor and ability to connect takes the uneasiness levels way down. He is on top of his game and always follows up with me to confirm any questions. I have referred friends to him before and would always do so if possible in the future.