Diplomat Pharmacy, Inc. operates as an independent specialty pharmacy in the United States. The company operates through Specialty and PBM (pharmacy benefit management) segment. It provides specialty infusion pharmacy, patient care coordination, clinical, compliance and persistency program, patient financial assistance, specialty pharmacy training, benefits investigation, prior authorization, risk evaluation and medication strategy, retail specialty, and hub services, as well as clinical and administrative support services to hospitals and health systems. The company primarily focuses on medication management programs for individuals with complex chronic diseases, including oncology, immunology, hepatitis, multiple sclerosis, specialized infusion therapy, and various other serious or long-term conditions. It also offers PBM services, including electronic point-of-sale pharmacy claims management, retail pharmacy network management, mail pharmacy claims management, specialty pharmacy claims management, Medicare Part D services, benefit design consultation, drug review and analysis, consulting services, data access, and reporting, information analysis, and preferred drug management programs to managed care organizations, self-insured employer groups, unions, and third-party healthcare plan administrators and worker's compensation payers. The company was founded in 1975 and is headquartered in Flint, Michigan.