The Texas HMO Quarterly Supplement is a document published by the Texas Department of Insurance (TDI) and serves as an up-to-date resource for all HMO's (Health Maintenance Organizations) operating in the state of Texas. It includes important information such as licensing requirements, rules, regulations, premium rate information, and a list of active HMO's in the state. The supplement is divided into three parts: the Overview, the Supplemental Rules, and the HMO Plan Profiles. The Overview contains information such as the current status of HMO's in Texas, the licensing and premium rate filing requirements, and the process for renewing a license. The Supplemental Rules provide additional rules and regulations that HMO's must comply with in order to operate in Texas. The HMO Plan Profiles provide a summary of available HMO plans in the state, including information on cost-sharing, provider networks, and plan benefits. The Texas HMO Quarterly Supplement is updated quarterly to ensure that HMO's have access to the most up-to-date information.