D. Anderson & Company (DAC) is engaged in providing a range of research support services. The company is principally involved in delivering clinical trial related patient services to various biotechnology and pharmaceutical industries. Its major services include patient recruitment and patient retention services. The company provides solutions in the areas such as market research, clinical trials messaging and branding, advertising programs, study awareness building strategies, call center services, study rejuvenation programs, physician and community outreach programs, and site support services. DAC also conducts training workshops in China, Australia, Czech Republic, Puerto Rico, and Spain. The company is headquartered in Dallas, Texas, United States.