American CareSource Holdings, Inc. (Nasdaq: ANCI), the nation’s leading ancillary health care system, today announced the expansion of its ancillary services provider network with the signing of MinuteClinic, the pioneer and largest provider of retail-based health care centers in the United States with about 500 locations in select CVS/pharmacy stores in 25 states. Minneapolis-based MinuteClinic is a subsidiary of CVS Caremark Corporation (NYSE: CVS), the leading provider of prescriptions and related health care services in the nation.