Kaiser Permanente 

Kaiser Permanente is a one-stop model Health Maintenance Organization (HMO) where most services are provided at one location - office visits, urgent care, x-rays, diagnostic tests, pharmacy and a vision center for eyeglasses and contact lenses. This plan offers the lowest premium. 

Prescription drug coverage is included in the Kaiser Permanente Plan.  You cannot enroll in the Caremark Prescription Drug Plan.