Mail Payment by Check Checks should be mailed to: PL Medical Co., LLC 321 Ellis Street New Britain, CT 06051 Please remember to include your invoice number on your check. Fax Credit Card Authorization Form Download and Fax the Credit Card Authorization Form (860) 223-5941 Upon processing a receipt will be faxed to the number indicated on the sheet. Online Credit Card Authorization Form Thank you. Your payment information has been submitted and a PL Medical Representative will contact you shortly.