Do you know of any websites that give consumers a third party verified profile of real estate professionals?

I don't know of any site that has the data you are looking for. There is ARELLO and the individual state regulatory licensing agency that has disciplinary information.

This link might help.
http://homebuying.about.com/od/realestateagents/a/063008-LiarAgts_2.htm

Go to DRE's web site and search. You will find years of practice and any complaints.
Redfin had a rating that they took down. Must be a reason for that!

Scouting Report Data No Longer Available

Dear Customers,

Redfin is suspending access to Scouting Report, the online tool that publishes deal histories and performance metrics for agents across the United States. We will continue to show this information for our own agents.

Our primary reason for excluding other agents is that the data we exposed has too many inaccuracies, mostly because agents work informally in teams, or don't formally record who represented a buyer in a deal. You can read more about the decision on our blog.

We apologize to consumers and agents alike for discontinuing the service, and hope to restore it in the coming months.

Glenn Kelman, CEO, Redfin
Tuesday, October 4, 3 p.m. PDT