OptumRx, the pharmacy care services business of Optum, agreed to acquire Diplomat Pharmacy, a provider of specialty pharmacy and infusion services, for c. $300m. “With its focus in specialty and infusion services, Diplomat has a proven track record of solving the unique challenges facing patients with complex health care needs. This combination will expand the innovative specialty pharmacy and infusion solutions OptumRx can offer to the consumers and clients we serve, helping ensure people get the right medications and services at the right time, in the right setting,” John Prince, OptumRx CEO.