The North Shore-LIJ Health System yesterday announced that it struck a clinical affiliation agreement with MinuteClinic, the retail health care division of CVS Caremark. The system's doctors will serve as medical directors for MinuteClinic walk-in medical clinics inside CVS/pharmacy stores in Bellport and Syosset, both on Long Island, and one on Staten Island. The agreement marks North Shore-LIJ's first clinical affiliation with a retail pharmacy for walk-in medical services. MinuteClinic and North Shore-LIJ will start the task of fully integrating electronic medical record systems, so that with a patient's permission, MinuteClinic can electronically share medical histories and patient-visit summaries with North Shore-LIJ facilities and physicians. MinuteClinics are staffed by nurse practitioners.