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Thomas Powell, MD MS, is a physician and career Chief Medical Information Officer with over twenty-five years in clinical, academic and industry leadership. He owns CMIO, LLC, which provides interim executive services, consultation and the Diagnostician method. He is the author of The Diagnostician (November 2026).

Thomas Powell, MD MS, is a physician and applied clinical informaticist who has spent over twenty-five years in clinical, academic and industry leadership as a Chief Medical Information Officer. He owns CMIO, LLC, which provides interim executive services, consultation, project support, and the Diagnostician method, which applies the physician's clinical method to the health system itself. He speaks, writes and mentors physician informaticists nationally. His book, The Diagnostician: American Healthcare Is Sick, Misdiagnosed, and Getting Worse; It's Time to Call the Doctor, carries forewords by David Lubarsky, MD, MBA, and W. Ed Hammond, PhD.

Dr. Thomas Powell has spent over twenty-five years as a Chief Medical Information Officer, the physician responsible for making clinical technology actually serve patients. His new book, The Diagnostician, argues that American healthcare has been treated for twenty years without a diagnosis. Today he's going to make one.