The FDA organizational chart depicts the Office of the Commissioner and four directorates that oversee the agency's core functions: Medical Products and Tobacco, Foods and Veterinary Medicine, Global Regulatory Operations and Policy, and Operations. The FDA org chart depicts the organizational structures reporting to the Commissioner of Food and Drugs within the Commissioner's Office. The Standard Administrative code (an alphanumeric sequence of characters beginning with the letter D) is represented alphabetically within the office component hierarchy from top to bottom and left to right.