Headquartered in Rockville, Md., the U.S. Public Health Service Commissioned Corps offers a variety of employment opportunities for professionals throughout the Department of Health and Human Services and certain federal agencies and programs. Its officer status provides opportunities for mobility, flexibility and career advancement in diverse work settings. The U.S. Public Health Service Commissioned Corps officers serve several agencies and operating divisions, including the Agency for Healthcare Research and Quality, the Agency for Toxic Substances and Disease Registry and the Food and Drug Administration. Its Health Resources and Services Administration provides primary health care to medically underserved people; serves women and children through State programs; and trains a health workforce.