Alayo Erick H MD practices board-certified gastroenterology on Chula Vista's Third Avenue at 587 Third Avenue, treating disorders of the esophagus, stomach, liver, pancreas, and intestines. He performs diagnostic and therapeutic colonoscopy, upper endoscopy, and complex hepatologic evaluations at Sharp Chula Vista Medical Center and at the Alfa Surgery Center co-located on Third Avenue. A graduate of Universidad Peruana Cayetano Heredia, he completed his internal medicine residency and gastroenterology fellowship at Cook County Hospital in Chicago and holds triple board certification in internal medicine, gastroenterology, and transplant hepatology. His special interest in liver and pancreas pathology includes workups for non-alcoholic fatty liver disease, viral hepatitis staging, and pancreatic mass evaluation, with chronic-therapy prescriptions — including proton pump inhibitors and immunomodulators — dispensed through Chula Vista Pharmacy for patients on long-term GI maintenance regimens. The practice performs FibroScan transient elastography for non-invasive hepatic fibrosis staging, polypectomy during surveillance colonoscopy, and esophageal dilation for stricture management using graduated bougie and balloon catheter techniques.