Walter A. Orenstein is the former director of the United States' National Immunization Program, a post he held from May 1993 to January 2004. Wikipedia*
On the C-SPAN Networks:
Walter Orenstein has 10 videos in the C-SPAN Video Library; the first appearance was a 1994 Senate Committee as a Director for the Immunization of the Centers for Disease Control. The year with the most videos was 1995 with two videos. Most appearances with Betty Bumpers (2). Most common tag: Medicine.