Dr. John Halamka joins me for this week’s podcast. He’s a renaissance guy: a physician, a CIO, and a healthcare IT innovator whose work I mentioned in a pair of InfoWorld columns. Lots of people are talking about secure exchange of medical records and portable continuity of care documents. John Halamka is on the front lines actually making this these visions real. Among other activities he chairs the New England Health Electronic Data Interchange Network (NEHEN), which began exchanging financial and insurance data almost a decade ago and is now handling clinical data as well in the form of e-prescriptions. The technical, legal, and operational issues are daunting, but you’ll enjoy his pragmatic style and infectious enthusiasm.