Expanding Capacity for Health Outcomes Act of 2019 or the ECHO 2019 Act This bill requires the Department of Health and Human Services (HHS) to establish a grant program that supports specified health care services in rural or medically underserved areas. Specifically, HHS must award grants to health care entities serving rural areas, health-professional shortage areas, medically underserved populations, or Native Americans for (1) specified videoconferencing technology that connects health professionals with specialists (e.g., chronic-disease, mental-health, and substance-use disorder specialists), (2) retaining health care providers, and (3) increasing access to health care services.