You do have to reach out to the Sales people to get the Business Associate Agreement and when I did it a few months ago it took some time to get it.
That being said if you are not using an electronic health record for your tele-health then Zoom is going to be your best bet. Everyone knows Zoom now that would be willing to do online therapy.
Anyway if you have not moved off of a less secure platform like Skype or Facetime now is the time to do so. While there is a waiver in effect that allows us to use non-compliant platforms it is always best practice to use a HIPAA compliant platform.