Texas Department of Insurance
https://www.tdi.texas.gov/company/top40.html
Top-40 list of insurers in Texas
Apr 3, 2024 ... Sierra Health and Life Insurance Company, Inc. 4,140,384,254, 7.18. 5, 71013, Superior Healthplan Network, 3,633,416,914, 6.30. 6, 60054, Aetna ...