The after-hours provider can be reached by calling (410) 383-8300 and dialing 0 (when prompted). Total Health Care, Incorporated (THC) is a Federally Qualified Health Center. THC is a Health Center Program grantee under 42 U.S.C. 254b, and a deemed Public Service employee under 42 U.S.C. 233 (h). Total Health Care participates in the federal ....