> We considered trying OneMedical, which opened an office close to where we live. But when I looked into it, it seemed like you have to buy a subscription up-front, with no other way to try it out. We might have made the switch by now if they had made it easier to try.

In many (most?) states, they are actually legally required to offer services to you without a subscription, but you won't be able to use the app. In other words, you have to call them like a normal doctor's office and book an appointment, and when you do, they will have to provide you the same medical care and services that they would for any other patient.

This is not specific to One Medical; it's due to laws that prohibit additional fees for medical services. In a similar vein: in many states you can use the Costco pharmacy even without a Costco membership, although you can't buy anything else while you're there.

That said, you're not really missing out. One Medical's entire shtick is that they have a slick UX and "appointments start on time" (in theory). In practice, their medical care is... let's say variable, at best. You're paying for a slick UI and convenience slapped on top of a care delivery system that's no better than what you might get elsewhere.