i often let it go to voicemail... then i listen to his message and decide how/when/if i'm returning his call. annnd sometimes i'll wait until i'm pretty sure he's not in or that he's with a patient, so i'll get his machine and can leave some message... ah, phone tag with T.... parry and thrust, i guess.
truth be told, i may spend too much time agonizing over my messages (how i phrased things) and his messages (his tone, his phrasing, did he take my message at face value or "hear" the subtext?). i don't know...
rainbow, i actually got a little "ACK" a few weeks ago, making sure he wasn't planning to retire or move or, well, die. i made some joke about making sure he eats healthy and exercises because we still have a lotta crazy to work through and i need him around to help keep the bad crazy at bay and encourage the good crazy to flourish