How to embed my website into other app

I have been looking for a solution for embedding my web page into an app, so the scenario is from the app, after user login, for each of the patient:

• There is a link or tab for my web page.
• After get into my web page, a form will collect health data for the patient,
• and then my page will save the data to database linked my web server,
• and then give the user the evaluation result.

Is there a way I can utilize web API to pass the patient Id from app to my web page and then save and retrieve data?

Thanks ahead!!