How do I approach the subject of vaccinations with Pediatrician's office?
Call the office and ask, politely, what their policy is regarding selective or non-vaccinating patients. Tell them you don't want to waste their time (or, yours) with an office visit, only to find that you have 2 different views on the subject! If possible, I'd ask to speak to one of the staff nurses (sometimes, receptionists will say anything to snag a new client). You don't owe them any explaination as to why you are choosing not to vaccinate. If pressed and you're afraid you might get daft in your response, pull the religion card and say it goes against your religious beliefs. Federal law states they can not ask you about your religion!
I find family practice physicians tend to be more open-minded on the subject than do peds (plus, they can treat the whole family and beyond those few childhood years). If you have any health food stores nearby, they might be able to give you the names of some health care providers in your area that won't push the issue.