What is the address for fairfield medical center? Fairfield Medical Center. Address. 401 North Ewing Street, Lancaster, Ohio, 43130. Phone. 740-687-8000.What is the phone number for the fairfield county department of health? Department Phone Number; Fairfield Medical Center: 740-687-8000: Administration: 740-687-8001: Billing: 866-826-9815: Crisis Intervention: 740-687-TALK (8255) Fairfield Medical Center FoundationWhat is fairfairfield medical center known for? Fairfield Medical Center in Lancaster, OH is rated high performing in 3 adult procedures and conditions. It is a general medical and surgical facility. U.S. News has extensive information in each doctor's profile to help you find the best one for you.What is fairfield medical centers online patient eservices? Welcome to Fairfield Medical Center's online Patient eServices. Here at Fairfield Medical Center we understand that everyone has busy lives and schedules. Our online Patient e-Billing has been developed to help you with that busy schedule. Paying your bills online is quick and easy.