IntelliShop is headquartered near Toledo , OH , and provides mystery shopping and related service onsite, on the phone, and online to over 90 clients throughout the United States . Ron Welty , CEO of IntelliShop has over 8 years experience in the mystery shopping industry. Ron is a member of the Mystery Shopping Providers Association Board of Directors, and serves as chairman of its Communications Committee.

Service Excellence Group, Inc. launched its success in 1993, is headquartered in St. Louis MO , and is a founding and charter member of the Mystery Shopping Providers Association. Service Excellence Group specializes in customized service improvement and development programs. They have grown to include a dedicated staff and over 40,000 field researchers that fulfill the need for on-site, telephone, and web based mystery shops and consultation for businesses throughout the United States , Canada , and Puerto Rico . Marci Bikshorn, CEO of Service Excellence Group, created the business due to her dedication to the retail industry and to fulfill the rising need of quality customer service and training.

Confero , with headquarters near Raleigh , NC , was established in 1985 and is a charter member of the Mystery Shopping Providers Association. Confero specializes in field evaluation services and customer satisfaction measurement for retail service businesses. Elaine Buxton, M.B.A., President, joined the firm in 1987, after spending three years as Operations Manager for Wedgwood China 's European Retail Division based in Frankfurt , Germany . Confero currently serves 64 national and regional clients and maintains contact with over 40,000 independent field researchers nationwide. Confero is a 100% woman-owned North Carolina corporation and is certified as such by the Women's Business Enterprise National Council.

Service Sleuth is an independent division of Howard Services. Howard Services was established in 1992 by Howard Levinson, CPP and Founder, as a full-service security consulting firm. In 1995 Tom Mills partnered with Levinson and created the Customer Data Collection Division known as Service Sleuth. Service Sleuth specializes in mystery shopping and the collection of data related to customers in retail, restaurant and manufacturing. Howard Services is one of only two mystery shopping firms licensed as Private Investigators in the state of Nevada . The only state where only Private Investigators can perform mystery shops. in 2000 Mills and Levinson created SASSIE, the industries first entirely web-based piece of software designed specifically for mystery shopping. With over 70,000 shoppers in 5 countries, Service Sleuth performs more than 50,000 mystery shops per year. Howard Services is a charter member of the MSPA. Tom Mills has been on the board of directors of the MSPA since it's inception and is one of only 4 members of the MSPA Hall of Fame. Howard Services has offices in Franklin , MA., and Las Vegas , NV.