John R. Webb, MD has practiced family medicine in the Grossmont area of La Mesa from Grossmont Medical Clinic on Center Drive since the late 1960s, making him one of the longest-tenured primary care physicians in the community. His multi-generational patient base accesses the full Sharp Community Medical Group specialist network, with inpatient cases routed through Sharp Grossmont Hospital across the Grossmont Center Drive corridor. Webb earned his medical degree from the University of Texas Medical Branch at Galveston in 1966 and completed his internship at the University of Tennessee Health Science Center. Nephrology and renal-function cases requiring specialist escalation connect to Grossmont's subspecialty corridor, including Balboa Nephrology - La Mesa for chronic kidney disease staging and electrolyte management. Diagnostic scope spans tympanometry, electrocardiogram interpretation, and comprehensive metabolic panel analysis across pediatric through geriatric age groups within Sharp Community Medical Group's referral infrastructure.