Gastroenterologist Christopher Costanza, MD, manages digestive-system conditions at Kaiser Permanente Zion Medical Center in Allied Gardens, San Diego, from the gastroenterology department at 4647 Zion Ave in the 92120 ZIP. He graduated from the Keck School of Medicine at the University of Southern California in 1997, completed his internal medicine residency at UC San Diego Medical Center from 1997 to 2000, and finished a gastroenterology fellowship at the same institution from 2000 to 2003. His NPI is 1760559603, and he holds board certification in gastroenterology with clinical expertise in biliary tract disease, esophageal disorders, pancreatic conditions, and gastrointestinal motility dysfunction. Medication management for his GI patients routes through the Kaiser Zion on-site pharmacy and through community dispensaries including Care Pharmacy in College Area for patients whose family members fill prescriptions outside the Kaiser system. His published research includes work on chronic abdominal wall pain outcomes in Clinical Gastroenterology and Hepatology, contributing data on long-term management strategies and healthcare cost patterns for a condition frequently misdiagnosed as visceral in origin. The Kaiser Zion campus houses endoscopy suites, radiology with CT and MRI capability, and a clinical laboratory, giving his diagnostic workups a single-campus turnaround from consultation through colonoscopy to pathology results. Allied Gardens' Zion Avenue medical corridor sits between the I-8 freeway and Waring Road, drawing the GI referral base from Allied Gardens, Grantville, and the residential corridors east toward La Mesa. Integrative approaches to functional GI conditions intersect with his conventional caseload, and acupuncture providers on the Mission Gorge corridor — including We Love Acupuncture in Grantville — manage IBS and motility patients who pursue complementary protocols. He is part of the Southern California Permanente Medical Group and carries affiliations with both the Kaiser Zion and Kaiser San Diego Medical Center campuses.