SoonerCare, Oklahoma's Medicaid program administered by the Oklahoma Health Care Authority (OHCA), reported more than 1 million enrollees in April 2026 roughly 485,000 adults and 532,000 children, close to a quarter of the state's population. Most of that population now moves through SoonerSelect, OHCA's managed care model, rather than traditional fee-for-service. During the 2026 legislative session, lawmakers passed House Bill 3650, setting a reimbursement "rate floor" that protects provider rates through July 1, 2028 as the SoonerSelect transition continues.
On the commercial side, providers contract mainly with Blue Cross Blue Shield of Oklahoma (a Health Care Service Corporation plan), CommunityCare, GlobalHealth, Aetna, and UnitedHealthcare, plus HealthChoice for state employees five payers, each with its own prior authorization and behavioral health carve-out rules.
Delivery is concentrated around INTEGRIS Health (Oklahoma City, the state's largest system, now cutting service lines), OU Health's academic medical center, Tulsa's Saint Francis Health System and Ascension St. John, and Mercy. Behavioral health capacity also runs through the state's tribal health systems: Cherokee Nation operates the largest tribally run health system in the country, logging more than a million patient visits a year through facilities including W.W. Hastings Hospital; Choctaw Nation of Oklahoma runs a hospital plus eight outpatient clinics; and Chickasaw Nation Medical Center serves as a 72-bed regional hub. Claims from these systems route through Indian Health Service billing methodology rather than standard commercial workflows.