As one of 21 state-contracted regional centers under California's Lanterman Developmental Disabilities Services Act, San Diego Regional Center serves La Mesa from its East County office on Alvarado Road. The nonprofit coordinates eligibility assessments and Individual Program Plans for more than 48,000 individuals with intellectual disabilities, cerebral palsy, epilepsy, and autism, referring pediatric clients to community providers such as SmallTalk Pediatric Therapy for speech and developmental intervention. Organized as a 501(c)(3) with an annual budget exceeding $1.2 billion and a staff of roughly 1,000, the center funds supported employment, respite care, independent-living skills training, and licensed residential placement across San Diego and Imperial counties. California Early Start eligibility for infants and toddlers ages zero to three runs through the center's intake process, which also maintains referral pathways to behavioral-health resources like Alvarado Parkway Institute for clients requiring psychiatric stabilization. Highest-complexity caseloads involve multi-agency transition planning for aging-out clients, integrating vocational rehabilitation, Medi-Cal waiver navigation, and individualized housing-support coordination across regional and county systems.