It was a surprising pick among many surprising picks. This week, President-elect Donald Trump announced his choice to head the Centers for Medicare and Medicaid Services: Dr. Mehmet Oz, who is as famous for the “America’s Doctor” moniker as he is for the number of dubious health claims he’s made from that perch over the years.  Perhaps it shouldn’t have been surprising. After all, Trump endorsed Oz in his unsuccessful Senate bid in 2022, and in 2016 Trump appeared on Oz’s show...