11. Walgreens Boots Alliance
With their stores in 25 countries, Walgreens Boots Alliance is regarded as one of the biggest and largest healthcare companies in USA.
They handle and take care of all the needs related to the health of individuals and the products and services offered.
They operate drug stores in the US under the Walgreen and Duane Reade as well as Boots drug stores in the UK, besides other countries.
The company is a distributor of medical products and drugs and also is the parent of stores like Drugstore.com, Beauty.com, and VisionDirect.com.
12. Express Scripts Holdings
They have revenue growing more than $100 billion and bring more to Medco healthcare solutions.
Everyone grabs Express Scripts Holdings for all the benefits offered in the healthcare sector. Also, it is known as the No. 1 benefit manager in the country.