Not only did the Founding Fathers pass a healthcare mandate during the First Congress, but also an individual mandate during the 5th Congress.
"In 1790, the very first Congress—which incidentally included 20 framers—passed a law that included a mandate: namely, a requirement that ship owners buy medical insurance for their seamen. This law was then signed by another framer: President George Washington.
Eight years later, in 1798, Congress addressed the problem that the employer mandate to buy medical insurance for seamen covered drugs and physician services but not hospital stays. And you know what this Congress, with five framers serving in it, did? It enacted a federal law requiring the seamen to buy hospital insurance for themselves. That’s right, Congress enacted an individual mandate requiring the purchase of health insurance. And this act was signed by another founder, President John Adams."