Main number: 972-786-0330. Fax number: 972-739-2894. Poison control number: +1-800-222-1222. Billing number: 972-786-0140. After hours calls: Please call main number and calls will go directly to an RN for triage. We are GROWING! MMC Pediatrics has expanded into another location located on our Irving campus. You can receive great care at either ....