Founded in 1933 and based in Alexandria, Virginia, the National Association of Chain Drug Stores (NACDS) membership consists of more than 210 retail chain community pharmacy companies. Collectively, chain community pharmacy comprises the largest component of pharmacy practice with over 100,000 pharmacists. The chain community pharmacy industry is comprised of more than 20,000 traditional chain drug stores, 8,800 supermarket pharmacies and nearly 6,300 mass merchant pharmacies. The NACDS membership base operates more than 34,000 retail community pharmacies with annual sales totaling over $500 billion, including $180 billion in sales for prescription drugs and $68 billion for over-the-counter (OTC) medications and health and beauty aids. Chain operated community retail pharmacies fill over 60% of more than 3 billion prescriptions dispensed annually in the United States. Additionally, NACDS membership includes nearly 1,100 suppliers of goods and services to chain community pharmacies. NACDS international membership has grown to include 116 members from 35 foreign countries.