Just my two cents as someone who's used one:

I moved here without a PCP and had ended up with a condition that isn't very widely known and basically results in pretty severe episodes that put me in the ER twice. There are some medications thought to treat it but of course the ER couldn't really prescribe me anything, they said I needed to go through a PCP or urgent care. I could not find a damn PCP taking new patients and my insurance for damn months and was so desperate to get relief. I went to get a prescription from urgent care after waiting for 3 hours and the DR told me about a concierge service he knew of.

I was desperate so I signed up, it is $60 a month and they could see me within the week. It has been the most comprehensive care I've ever gotten from a doctor. They said insurance limits how long a covered visit can be to 15 minutes, whereas here I didn't wait at all, spent 45 minutes just talking out concerns, and can make an appointment in person or virtual within a week whenever I want. I've had two flare ups since then and I can message my doctor and she'll have my prescription to my pharmacy within the day and listened to me when things weren't working and offered a handful of alternatives. They also act as a gyno and have done lab work for me.

The service is called Eudoc. Is it fucked up I have had to pay even more to get timely and thorough care? Absolutely. I don't think this is an equitable system and wish I didn't have to deal with it all. But as someone with a unpredictable medical condition it's been incredibly worth it to me. Also looking at their website it looks like the monthly fee is going to go up to $100 a month when I turn 27. Unfortunate, but when I considered cancelling it before my conditioned flared up that week so I'll probably still keep them around.