They can’t give you medical information, but if the call were about something else, you can go to the department that handled the emergency and ask them if they can tell you anything. You can also ask if they’d be willing to pass your information along to the person you made the call for, and that person can contact you if they feel like it. Not saying they’ll do it, but they might.
Thanks for helping a stranger out (sounds like that’s what this is about)! Good luck!
