Sterling was started in the back office of a dental practice in Vacaville, California, just outside of San Francisco in March 1983. By 1985, the company had grown into a multi-million dollar organization. By July of 1986, Sterling had moved its headquarters to Glendale, California, where the company expanded even more rapidly.
By 1988, Sterling had earned the #45 spot on Inc. magazine’s list of 500 of the fastest-growing, privately-held companies in the U.S. The next year, Sterling made the Inc. 500 list again at #117. This is a feat few companies have ever achieved.