NASHVILLE, Tenn.–(BUSINESS WIRE)–Office Ally, which operates a national healthcare network connecting payers, providers and partners across clearinghouse, clinical attachments and payments, today announced the launch of Office Ally® ProPay™, a flexible, open-network payment solution built on modern technology. ProPay gives healthcare payers a way to pay every provider the way they want to be paid, through Automated Clearing House (ACH), virtual card, digital lockbox or check, rather than lock