Abstract: The present invention extends to methods, systems, and computer program products for sharing healthcare information in private collaborative networks. A hierarchy of rules includes patient rules for each of one or more patients. For each patient, the patient rules define a private collaborative network for sharing healthcare information related to the patient among a plurality of designated entities. A computer stores healthcare information related to the one or more patients. The computer receives request from entities requesting access to stored healthcare information related to the one or more patients. The computer refers to patient's rules within the hierarchy of rules to determine what, if any, subset of the patient's stored healthcare information is accessible to the requesting entity. The computer provides accessible subsets of stored healthcare information to the requesting entity in accordance with the patient rules.