Which insurance denies the most claims?

BANKFINANCIAL National Association 5 BEACON Community Bank 3 Bodcaw Bank 4 COUNTY National Association National Bank 4 EAGLEBANK 13 FIRST Bank 9 First Bank of Boaz 6 First Commercial Bank, National Association 1 First Farmers & Commercial Bank 1 FIRST FED Bank 11 First National Bank of Kansas 1 First Pryority Bank 12 First State Bank of Dongola 4 First State Bank of Purdy 10 Grove Bank 8 Hometown Bank 10 Lakeview Bank 10 Main Bank 8 MINSTER Bank 5 UBANK 18