I don't call them anything.

Sometimes I need to talk to administrators (to make an appointment or somesuch). In those cases I'll say 'Dr Lastname' if it is an appointment with a p-doc and 'Firstname Lastname' if it is an appointment with a psychologist (as psychologists don't typically have PhD's over here).

Since I'm having therapy with a p-doc now I do the firstname lastname thing if I have to ring his secretary now.

I don't think it matters...

Though I guess that there can be an up-side and a down-side of either.

- If you call them 'Dr' it can be seen as a sign of respect, or it can be seen as a way of maintaining distance / aloofness / preventing intimacy.
- If you call them 'Firstname Lastname' or 'Firstname' to their face it can be seen as overly intimate, or it can be seen as nicely intimate.

Dunno. Hard to know how they will take it really... I guess the most important thing is what it means to you ;-)

I guess I've settled on 'Dr' for meds review and 'Firstname' for therapy. Though... I try to avoid saying their name as much as possible. Doesn't really help that my current p-doc / t has the same firstname as 2 other people I know (who I talk to him about sometimes) and also... My father (though he doesn't know that yet).