The key to our drug benefit results…our preferred provider solutions. MHCSI is the leading pharmacy owned and operated preferred provider pharmacy benefit manager (PBM) in Canada. We service companies and organizations of all sizes with membership from coast to coast. Our guarantee – to provide best in class management of your drug benefit costs while improving your health benefit outcomes. The key to our success is the strength and performance of our corporate National Preferred Pharmacy Network combined with our clinically based, managed care expertise. Our Corporate network represents over 400+ locations across Canada under the banners of Lawtons Drugs, Sobeys Pharmacy, Safeway Pharmacy, Thrifty Foods Pharmacy, FreshCo. Pharmacy, Chalo FreshCo. Pharmacy, Foodland Pharmacy, IGA Pharmacy and Sobeys Pharmacy By Mail.