I have been emailing a provider but her email and number don't match the ones shown on the website.  Also, the age on the review shows 26-30 but her backpage ad lists her age is 45.  One of the reviews references her being older. Also, the pictures and telephone number on backpage match one of the pages linked up to her review.  

Most providers who are well reputable will keep things updated. If you are seeing some disprencies then stay away.
Also just my personal opinion, stay away from backpage.  

Providers can't update their profiles here. The profiles are based on what we guys enter when we do reviews, so don't hold it against them if something's a little off.

against them if things are little off. But here the op is posting quiet a few things which don't add up.

Really? I know of multiple providers who have been trying to get updates to their profiles to change phone numbers, rates and other important information.  

That was the issue I was getting at. YOU can't change it, but you can ask the admins to do it. I know of one provider whose profile was showing an old phone number for her. It took months and multiple requests to get it changed. It's not always instantaneous.