@ChrisFNP,
You would only have to sign a BAA with Andrew at Desert River Solutions if you went the route of Andrew doing custodial ownership. I already have an agreement with Andrew and Andrew would be contracting me for the work so hence my fee would be built in.
I go direct with clients when they want PDF files to move to another EMR where Andrew is not needed so, yes, in that case, a BAA with me would be required.
JamesNT