Drs. Kahn and Johnson established Summit Psychological Services, P.A. in 1992. SPS has since grown to become one of the largest, most comprehensive private psychotherapy practices in New Jersey. Our Summit and Montclair offices have served thousands of people from northern and central New Jersey (Bergen, Essex, Hudson, Hunterdon, Middlesex, Morris, Passaic, Somerset, Union, Warren, and nearby counties); New York City; and Eastern Pennsylvania. As an SPS client, you benefit from the best of all worlds: the comfort, privacy, and safety of a trusted therapist’s office; a wide range of services; and the depth and breadth of expertise offered by our multi-specialty team. "Whether you are seeking traditional individual psychotherapy, or you are looking for a customized outpatient program, we have the capability of putting together different services to create a truly unique and personalized experience". - Jeffrey S. Kahn, Ph.D., Founding Director.