CVS Health

Headquartered in Woonsocket, R.I., CVS Health owns the country’s largest pharmacy chain with more than 9,000 physical locations found mostly in the Northeastern U.S. The publicly traded corporation is comprised of more than 300,000 employees and offers pharmacy services, health and beauty products, convenience foods, and other services like photo printing. CVS Health didn’t start adding pharmacies to new stores until 1967, but since then has acquired large companies in the health space such as Aetna, Signify Health, and Oak Street Health to boost its primary care offerings and develop its own insurance arm. Other subsidiaries of CVS Health include benefit services manager CVS Caremark and MinuteClinic, a walk-in health clinic for vaccinations, health screenings, and other quick appointments.