"Cost-Shifting" is the polite politically correct term used in the industry to describe the experience when a hospital or clinic needs to find a larger share of better paying customers to offset less paying folks from Medicare Fee-For-Service (FFS), Medicaid, Self-Pay, etc.  

Many hospitals & health systems do it, very legally.  In my view, Kaiser (KP) gets a gold star for doing it with skill and finesse.  KP only participates in the Medicare Managed Care programs which pays better than the traditional Medicare FFS.  KP's participation in Medicaid (as a ratio to their commercial volumes) is hardly measurable; and rarely do self-pay folks find their way to a KP hospital (KP hospitals do not have BIG BOLD EMERGENCY signs outside their doors -- they are not interested in all comers, though legally required to accept all.)  

Granted there is something unsavory about the practice, but Zoomcare is just following the herd.  A probing view of Providence, Legacy, will turn up the same thing.