Nice, but I've got an error: https://www.opendoctor.io/advsearch/?dtype=name&qtype=name&r...

Will fix thanks!

The search results should be sorted by something - let the user choose the sort criteria but default to name.

I will asap! thanks!

Where does the data come from?

I'd love to know as well. There's a lot of great data on doctors in the US at data.cms.gov and data.medicare.gov. Socrata, the company I work for, builds and hosts the APIs so let me know if I can help in any way!