you need to strike business agreements with literally countless small practices, hospital systems, lab service providers, drug companies, outpatient clinics, etc.
This is why the aggregator model described in the article is relevant - the small practices will come to Amazon to plug into their aggregator and access their customers.
In that scenario, Amazon opens up shop in a state, provides cookie cutter TOS agreements to providers that mesh with the state's regulations, and providers on-board themselves in order to access the customer base.
Totally dependent on the locale. If I recall correctly there are coverage laws in certain places which state that you cannot do business as an insurer in an area unless you provide physician and hospital access to people within a certain proximity. If you're a big hospital system or even a small place without much competition, you can tell Amazon to shove their TOS because they literally can't do business legally there without you.
This is why the aggregator model described in the article is relevant - the small practices will come to Amazon to plug into their aggregator and access their customers.
In that scenario, Amazon opens up shop in a state, provides cookie cutter TOS agreements to providers that mesh with the state's regulations, and providers on-board themselves in order to access the customer base.