Oman-Gibson Associates (OGA) is a full-service health care real estate and development firm with offices in Nashville, Tennessee, and Dallas, Texas. OGA offers a range of real estate services to clients, including development, project management, site selection and lease consultations. In the past 15 years, OGA has averaged more than $100 million in health care development annually and developed more than 400 properties across 35 states for customers ranging from physician groups, behavioral health groups and national surgery centers to major hospitals and health systems.