Hmmm… I realize this as a very very early test pilot for Apple dabbling into public health care coverage.
And it's not just Apple. Even Google and Amazon are doing it. Why are the largest/wealthiest tech companies doing it? Dabbling in health care services? One answer: because the government and traditional medical care institutions (HMOs, PPOs, Insurance companies) have failed the American people. Health care in the USA is terribly expensive, and coverage is spotty.
To be honest, I don't blame them (Apple, Amazon and other tech companies). They understand that when there is a need (for good affordable national health services), then there is a market, there is a future service industry that can be "sold".
Apple Is Joining Amazon and Warren Buffett in the Health Care Business