Billing Schedule 2012 Client Relations Billing Schedule Billing Month Friday - Cutoff Date January 2012 December 16, 2011 February 2012 January 13, 2012 March 2012 February 17, 2012 April 2012 March 9, 2012 May 2012 April 13, 2012 June 2012 May 11, 2012 July 2012 June 15, 2012 August 2012 July 13, 2012 September 2012 August 17, 2012 October 2012 September 14, 2012 November 2012 October 12, 2012 December 2012 November 9, 2012 January 2013 December 14, 2012  Billing Schedule PDF Contact Client Relations: For questions or inquiries about your billing invoice or payment status: Metro OKC: 405-607-4777 Toll Free: 866-503-4294 Fax Enrollments/Changes: 405-607-2136 E-mail: ClientServices@DeltaDentalOK.org Online Billing/Payment Link: https://www.DeltaDentalOK.org/OnlineResources Pay-by-Phone: 877-729-7343 Enroll with E-Bill Our "E-Bill" system lets us provide you (or a designated person within your company) with a link every month that will notify you when your monthly billing invoice is ready to be retrieved. You receive this link on your usual billing day each month. Then, you simply visit our Web site, enter your User Name and Password (which will be provided by Delta Dental) and retrieve your bill.  View Application Form