After 2 weeks of waiting, I think I would make sure the receptionist or whoever takes the messages for him, knows that he said he would get back to you and that you left messages 2 times already..and have not heard anything back..

I could see it possibly taking a week or 2 to get any info that he wanted..so a reminder call is appropriate - and maybe ask that he let you know how long it will til you will hear back from him.

If it's a message on his own voice mail he could be disorganized and forgetting about it..

I don't know if you are leaving the message at the front desk or his voice mail.
But try both ways if possible.

A few drs offices even use email now.

But many don't use email - takes up too much non billable time.