National Shopping Service began in 1972 in Orange County, CA as a small private investigation firm run by a retired police officer named John Astle. In 1985, Astle sold the company to Paul Bingham, a Mormon salesman who used his large family to perform local mystery shops. When the venture outgrew his dining room table in 1990, Bingham listed the company for sale with a Los Angeles based mergers and acquisitions firm. One of the firm’s executives, Matt Wozniak, immediately saw the potential of the fledgling business—and promptly purchased it.

The business came with a handful of clients, a database of about 500 mystery shoppers, and a vision. Wozniak was the sole employee, working out of a 100-square-foot office. An experienced entrepreneur, he quickly assimilated Bingham's knowledge of the business and set out to become the best. He upgraded equipment, automated systems, and hired his first full-time employee—all while upholding the original vision of excellence and innovation. And the clients came.

By the late 1990s, National Shopping Service was recognized as an industry leader. The company had grown from local markets to national, and had seen its gross revenue increase twentyfold over the previous 10 years. Operations had improved with the advancement of technology—the internet was now playing a major role in recruiting, training, data collection, and delivery. The database of shoppers in the U.S. was approaching 100,000. Taking the next logical step, NSS established partnerships with several European companies, achieving international status in the process. NSS was now a global force.

In 1999, NSS moved its corporate office from Los Angeles to the tranquil Sierra Nevada region of northern California, where the company continues to thrive. Wozniak remains at the helm, supported by a staff who shares his vision. After more than 40 successful years of business, NSS has developed into one of the world’s premier mystery shopping providers, and continues to deliver its own brand of excellence and innovation to clients all around the globe.

National Shopping Service’s corporate office is located in the beautiful Sierra Nevada region of northern California, between the bustling capital city and the historic foothills. We enjoy a rich and diverse culture and a friendly business environment.

National Shopping Service Headquarters

In addition to maintaining partnerships with other mystery shopping companies, National Shopping Service is a registered member of the following organizations:


Mystery Shopping Providers Association
Mystery Shopping Providers Association


Better Business Bureau

Follow Us