We serve children and adults with developmental disabilities in San Joaquin, Stanislaus, Amador, Calaveras and Tuolumne counties. Free diagnosis and assessment services are available to any person suspected of having a developmental disability, such as mental retardation, cerebral palsy, epilepsy, or autism. To qualify for ongoing support and services, a person must be found to have a developmental disability which began before the age of 18 and is a substantial handicap.