Both Interior and Califano were there, it was a meeting of the Cabinet's "DH" committee and both secretaries are members. With regards to health insurance: most likely yes (I've never read anything about this in any of my sources), but there's likely an "opt-out" option and RFK could certainly afford the best specialists in the country; he was always ensuring his friends got the best possible private care IOTL and paying for it if required. As POTUS this is a moot point because the White House doctor takes care of everything. One thing I don't know is whether the WH doctor treats the First Family: I'd say no but I could be wrong.