I've been a customer of theirs for at least 12 years, I think (I have an entry in my password manager from about that long ago, and I might have had an account before that). It's been fantastic, in general: I can get a phone consult anytime I've wanted one, and can get in to see a doc with pretty short notice. They are good at giving me the referrals I ask for, even if they are weird (eg., after listening to Chamath Palihapitiya talk about Coronarary Arterial Calcium scans, I got curious and wanted one, and 1med got me the referral I wanted/dealt with insurance, etc.). About the only downside is that it's a bit harder to keep a very consistent GP, in that 1med seems to have a fair amount of turnover. I don't know if it's hard to keep a consistent GP in other contexts, as I pretty much didn't go to doctors between the time I left high school and when I started using 1medical.