| | | Centers for Disease | +18002324636 | 24/7 | Disease control, public health research |
National Institutes of | +13014964000 | Mon-Fri: 8:30 AM - 5:00 PM | Biomedical research, medical studies |
Environmental Protection Agency | +18882759378 | Mon-Fri: 8:00 AM - 5:00 PM | Environmental regulations, pollution control |
National Park Service | +12022086843 | Mon-Fri: 9:00 AM - 5:00 PM | National parks management, conservation |
Social Security Administration | +18007721213 | Mon-Fri: 8:00 AM - 5:00 PM | Social Security benefits, Medicare, Disability claims |
Federal Aviation Administration | +18668355322 | Mon-Fri: 8:00 AM - 4:30 PM | Aviation safety, air traffic control |
Securities and Exchange | +18007320330 | Mon-Fri: 9:00 AM - 5:00 PM | Securities regulation, investor protection |
Occupational Safety and | +18003216742 | Mon-Fri: 8:00 AM - 8:00 PM | Workplace safety regulations, inspections |
Bureau of Alcohol, | +18008003855 | Mon-Fri: 8:00 AM - 8:00 PM | Firearms regulation, explosives enforcement |
United States Department | +12027202791 | Mon-Fri: 8:00 AM - 4:30 PM | Agriculture policy, food safety, nutrition programs |