If not next of kin they will not give out info (or should not).
Remember the debacle about the news organisation pretending to be the Queen enquiring about Catherine (Jacintha Saldhana)
More often than not the patient does not want contact for one reason or another. I always suggest that relatives think about what's best for the patient. The question is always : Does wanting to know (add in calling or visiting ) make it better for the patient?
@Flashback - I think rather than raining the hospital, best to speak with the official next of kin and discuss with that person