doctor shopping
n.— «Eventually, according to Detective Parrish, Chad began getting his prescriptions through a practice known as doctor shopping.…A person makes appointments with several doctors, fakes symptoms that would merit their prescription of choice, then goes to multiple pharmacies to get those prescriptions filled.» —“Cowboy’s Drugstore” by Paul Peters Missoula Independent (Mont.) Sept. 8, 2005. (source: Double-Tongued Dictionary)