GeoBlue Trekker Essential is administered by Worldwide Insurance Services (WIS), a wholly owned subsidiary of HTH Worldwide. A fully licensed insurance broker and administrator, WIS has developed innovative, interactive global health resources to serve international leisure, business and student travelers. WIS provides exceptional service via toll-free multi-lingual customer support and its proprietary web-based administrative capabilities.

HTH Worldwide has grown to become the leading provider of primary health insurance for international students at US universities and an innovator in online healthcare information, medical assistance and insurance services for leisure and business travelers around the globe.

Global emergency medical assistance for GeoBlue Trekker Essential is provided by Worldwide Assistance Services. With alarm centers in 33 countries and agents in 208 countries, Worldwide Assistance Services offers evacuation assistance, medical monitoring and referral, legal assistance and emergency cash advancements.