contact us Billing Questions Please contact our billing department with any billing questions.Last name A – M(713) 341-2100 Ext. 110Last name N – Z(713) 341-2100 Ext. 121 Office Hours WEEKMonday: 8:00am – 4:30pmTuesday: 8:00am – 4:30pmWednesday: 8:00am – 4:30pmOffice closed for lunch 12:00pm – 2:00pmThursday: 8:00am – 4:30pmFriday: 8:00am – 4:00pmOffice closed for lunch 12:00pm – 1:30pm Contact Info PHONE: (713) 341-2100 Option 2FAX: (713) 932-7072ADDRESS: 10497 Town & Country Way | Suite 360 | Houston, TX 77024 Lab Hours Monday – Friday: 8:00am – 4:00pm How to find us