Which historical healthcare payment model is considered the earliest precursor to modern medical subscription services?

The healthcare industry has evolved significantly in how patients access and pay for medical services. Subscription-based healthcare models have emerged as alternatives to traditional fee-for-service approaches, offering patients predictable costs and regular access to care. But subscription models in medicine aren't entirely new - they have historical precedents that laid the groundwork for today's direct primary care and concierge medicine services. Test your knowledge about the origins of medical subscription models!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Lodge Practice: fraternal organizations in the early 1900s contracted physicians to provide care to members for a fixed monthly fee
Medicare Part B (1966): the first government-sponsored subscription health service requiring monthly premiums
HMO Act of 1973: legislation that created the first subscription-based health maintenance organizations
Blue Cross hospital insurance (1929): the first prepaid hospital coverage plan that operated on a subscription basis