The very heart of Tri-State Community Health Center's sites are a staff of people that are dedicated to improve the lives of others in their communities. Administration & Billing Office. 109 Rayloc Dr Hancock, MD. Phone: 301-678-5187. Fax: 301-678-5797. Hours: Monday - Friday 8:00 am - 5:00 pm. Visit our Facebook page. Carousel Image by ....