Dr. Thomas P Hsia specializes in gastroenterology in Santa Maria area. Dr. Thomas P Hsia has a medical practice at 525 Plaza Drive, #307, Santa Maria CA, and has over 30 years of experience in the field of medicine. He graduated from his medical school with his medical degree in 1987. He is affiliated with numerous hospitals, including Marian Regional Medical Center (CA) and more. Dr. Hsia is accepting new patients at his medical office and practice location in Santa Maria, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.