Data extraction from PDF without using OCR


I need to extract Patient Name,Claim Type,Date of Service from a PDF (I have attached the PDF document).
I am restricted from using OCR.
I am half way through data extraction using Substrings, split functions… but in vain.
Please help! This is urgent!

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Also attached my sample code.Main.xaml (23.1 KB)

PDF you attached is native one so there is no point of using OCR here.
Whats the problem statement?