John M. Slack

Heartland Dental LLC offers non-clinical administrative support services to dental offices. It provides support through management services, such as staffing, human relations, purchasing, administration, financial, marketing, and information technology support. It also offers dental and business assistance, office management, continuing education, practicing administrator, expanded dental duties and hygienists. The company was founded by Richard E. Workman in 1997 and is headquartered in Effingham, IL.

Amex, Inc. was engaged in operating as an export management company. The company was founded by Mohamed A. Nouri in 1981 and was headquartered in Minneapolis, MN.

Heartland, Inc. operates in steel warehousing and fabrication, petroleum retail and wholesale operations. It provides access to financial markets, expanded marketing opportunities and operating expense efficiencies. The company was founded by Trenton S. Sommerville on April 6, 1999 and is headquartered in Middlesboro, KY.

Castle Dental Centers, Inc. provides dental care services. It offers management expertise, marketing, information systems, capital resources, and acquisition services. It also provides services like diagnostics, treatment planning, preventive care, removal of infection, fillings, crowns, bridges, partials, dentures, and extractions. The company was founded in 1981 and is located in Houston, TX.

Dental Health Resources, Inc. provides educational services on dental practices. It offers administrative support services to tackle marketing, accounting, and other aspects of business. The company was founded by Richard Workman on August 11, 1987 and is headquartered in Effingham, IL.