Don Mathis, center, president and CEO of the National Community Action Partnership, reunited with Dr. Alice Chen, left, executive director of Doctors for America, and Dr. Vivek Murthy, founder and board chairman of Doctors for America, at the DFA national meeting in Washington, D.C. Mathis rode with Drs. Chen and Murthy last summer on DFA's "Patients Over Politics" bus tour in four southern states. (April 29, 2013)

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