https://www.castleconnolly.com/
There is a small fee, although you can still see the doctor's name and location without joining.
The author must have forwarded my email to a colleague (who may have, in turn, forwarded it to further links in a chain - all the intermediary addresses were duly absent from the final referral I got, as should be expected from professionals), because soon after, I got a response from a new contact, referring me to a therapist who turned out to be a good fit.
Looking for a therapist can really suck (I'd had somewhere around eight months of trying at least five different bad-fit therapists before I tried the random-midnight-email approach above), so I figured I'd mention the approach that actually ended up working for me.