The Australian Digital Health Agency's national health CIO Ronan O'Connor has resigned to take up a position with global health IT not-for-profit the Healthcare Information and Management Systems Society (HIMSS).

Mr O'Connor headed up the delivery of the My Health Record expansion program when it flipped to opt-out in 2018, and has also been overseeing a program to re-platform the system when the contract with national infrastructure operator Accenture ends in 2021.