To create a comprehensive provider page on 99active, you need to include several key details. First, choose a unique name for your URL, such as 'Alex-Climbing-Guide'. If you have a company, enter your company name. Provide a public contact email address and phone number so customers can reach you. If you already have a homepage, include that information as well. Craft a sentence that embodies your unique offering and write a detailed description about yourself and your services. Lastly, upload an image to make your page visually appealing. By providing these details, you'll create a professional and trustworthy online presence on 99active.