You need to call medical records dept at RUSH. Call the main number and they will connect you to medical records dept. They will also tell you what all you need.
Low income and indigent people are allowed to get their medical records for free, as per Dave Jackson. This is a law in every State, though most hospitals sadly will not voluntarily let people know this.
Call rush they would give you the department and who to talk to
Call the dept you are seeing or MyChart. Google isn't the place for such time sensitive questions
you can make an account on Mycharts, if you ask for them they will charge you. but montón mycharts
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