It was definitely not working. My mother had Tricare, which is a program for retired military and their families. (My father was a WWII vet.) She had Dean as her provider. The Dean Machine fell down on the job a number of times, and trying to reach her doctor of record was about like trying to phone the pope.
I don't have a solution to our country's medical woes, but I have plenty of ideas as to what the problems are. One is overreliance on writing prescriptions to solve all problems and minimize the time spent by the doctors and other personnel. What Ma needed wasn't available until she got admitted to hospice: someone to review and knowledgeably oversee the whole thing, and more than that, to listen to our wishes and preferences and respect them.
But that would take more than fifteen minutes and an occasional phone call returned by an underling, so it's not available.