Senior Obama aide DeParle leaving White House: source

U.S. President Obama introduces Sebelius as Health and Human Services Secretary in WashingtonWASHINGTON (Reuters) – Nancy-Anne DeParle, a top aide to President Barack Obama, is leaving the White House, a source familiar with the matter said on Friday, marking the latest departure of a woman from a senior post in the administration. DeParle, 56, a White House deputy chief of staff, was Obama's point person on his signature healthcare overhaul in 2010. She was also a healthcare adviser to former President Bill Clinton and headed the agency that administers Medicare and Medicaid from 1997-2000. DeParle's departure is for personal reasons after nearly four years at the White House. …