Dr. Calvin Earl Olson, MD

Dr. Calvin Olson specializes in gastroenterology and internal medicine, bringing nearly five decades of medical expertise to his practice. He earned his medical degree from the University of California San Francisco School of Medicine and completed his residency at University Hospital South Texas Medical Center. With 49 years of experience treating digestive disorders and providing comprehensive internal medicine care, Dr. Olson has built extensive knowledge in managing complex gastrointestinal conditions. He is fluent in both English and Spanish, allowing him to serve diverse patient populations throughout his career.

Dr. Olson practices at Oak Valley Hospital and serves patients across multiple locations in Modesto, Turlock, and Los Banos, California. He treats patients with GERD, acid reflux, and childhood GERD, helping families manage these common but often troublesome digestive conditions. His practice offers specialized infusion therapies, including home infusion services and …clinic-based treatments for patients requiring ongoing medication administration. Patients consistently rate Dr. Olson highly, giving him an average score of 5.0 stars for his care.