Hello, your project is fully within our expertise.
So you want a platform with several registered users each with a certain set of access to a set of documents who will be able to edit and sign them?
It's perfectly possible using PHP and its technology stack.
Also, do you have any preferences regarding the appearance of the website? (Other than the general theme of it relating Medicare.)
Do you want the hosting to be done for you as well?
When do you need the website to be up and running?
We are a team of highly experienced developers with an average experience being above 5 years. Our expertise fields include website and mobile application development, graphic design, and game development. We use many different technologies including Moodle, WordPress, Wix, C#, PHP and its frameworks, .NET, React Js, Angular Js, Illustrator, Adobe XD, and so on.
It's our pleasure to help you with this project.
Please don't hesitate to share more detail so we can figure out how we can be a proud partner of yours.
Best regards