This document proposes a risk-aware integrity management framework for distributed healthcare systems. It integrates measures of trust and risk with an existing credentials-based access control model. The framework uses a knowledge representation called Many Worlds on a Frame to capture context for interactions. It associates trust values with user roles and privilege packages, and calculates risk scores based on the sensitivity of data and likelihood of undesirable events. The framework aims to provide flexible policies while mitigating risks like illegitimate access of sensitive health information in distributed healthcare environments.