Houston is home to the Texas Medical Center — the largest medical complex in the world — which anchors an unusually dense concentration of specialists in oncology, cardiology, transplant medicine, and academic-affiliated practice groups, alongside independent primary care and multi-specialty practices spread across The Woodlands, Sugar Land, Katy, and the rest of Harris County. That density means high claim volume and a payer mix led by commercial insurers such as Blue Cross Blue Shield of Texas, UnitedHealthcare, Aetna, Cigna, and Humana, each with its own prior-authorization and claim-formatting rules.

A large share of Houston-area patients are also covered under Texas Medicaid managed care — STAR, STAR+PLUS, and CHIP — administered by carriers like Superior HealthPlan, Amerigroup, and Molina Healthcare. Texas Insurance Code Chapter 1301, regulated by the Texas Department of Insurance, sets prompt-pay requirements for HMOs and insurers on clean claims. Eminent Health’s AR follow-up workflow is built to flag claims that pass that window, so Houston practices operating at high patient volume aren’t quietly absorbing preventable revenue loss.