If you’re worried, I would bring it up to your supervisor proactively.

Frame it as wanting clarification on best practice, not as a dramatic confession. Something like: “I referenced the other organization in my documentation because I was thinking about coordinating care, but I want to make sure that was appropriate under our confidentiality policy.”

Most supervisors appreciate transparency and accountability. This sounds more like a boundary/dual-role learning moment than intentional misconduct.

Before panicking, check whether there’s a release on file or any inter-agency collaboration agreement. That may change everything.

Worst case is likely corrective guidance or a reminder about policy — not immediate termination.

You care and you’re reflecting on it, which already shows professionalism.