According to recent estimates, more than half a million adults in New York City have depression and nearly 60 percent of these individuals do not receive treatment. Mental illness impacts New Yorkers of all ages, races, and ethnicities, but the distribution of mental illness varies greatly by income, with people living in poverty experiencing a disproportionate share of the burden. Depression can also contribute to and worsen the course of chronic disease. As a health care provider, you play a crucial role in helping your patients with depression. The clinical tools, provider resources, and patient education materials in this Depression Action Kit will support and amplify your efforts to help patients with depression.