Dr. Javitt has been a founder of health information technology companies that have become part of Siemens, Inc., United Health Group, Inc., and Aetna, Inc. In 1994, he founded Certitude, Inc., which was acquired by United Health Care (NYSE:UNH) as part of the Ingenix formation. Following a term of service as Senior VP and National Medical Director, he left to co-found eMEDx, Inc., which became part of Active Health Management. Dr. Javitt served as Chief Scientific Officer of Active Health until its acquisition by Aetna (NYSE:AET).