Shadowing during non 9-5 hours

I'm a recent graduate, and I'm currently working full time, 5 days a week. I need some shadowing, and I think it's best I shadow someone in primary care. After calling a few offices, I've realized that many of them are 9-5 type offices. How would I go about finding a primary care doc who would let me shadow during evening or weekend hours? Are these types of doctors normally found in hospitals rather than private practices?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums