Henry Schein, Inc. is an American distributor of health care products and services with a presence in 32 countries. The company is a Fortune World's Most Admired Company and is ranked number one in its industry for social responsibility by Fortune magazine.

Henry Schein has been recognized by the Ethisphere Institute as the World's Most Ethical Company six times as of 2017.

In 1932, Henry Schein, a graduate of Columbia University College of Pharmacy, borrowed $500 and opened a pharmacy in Queens, New York. The company expanded into dental supplies in the 1960s, and by the late 1980s, Henry Schein held approximately 10 percent of the dental-supply market. 

In August 1997, Henry Schein Inc. agreed to buy Sullivan Dental Products Inc. for approximately $318 million.  The purchase made the company the world's largest distributor of dental equipment and supplies.

By that point, Henry Schein had made 16 acquisitions in 1997. Also in 1997, Henry Schein acquired New York-based medical-products distributor Micro BioMedics Inc as well as Dentrix Dental Systems.

According to en.wikipedia