Thank you for your interest in KLO Professional Billing, Inc. Your questions and feedback are always helpful to us in providing higher quality service. Our offices are open Monday through Friday, 8:00 AM to 4:00 PM Central Standard Time. During these hours, we can be reached at our main phone number: (630) 789-2550, at our toll free number: (877) 246-9115 or via fax at: (630) 789-2571.

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