One Step Diagnostic – Woodlands Address Street:3117 College Park Dr #100 City: The Woodlands State: TX Zip Code:77384 Contact Phone: 936-251-0553 Fax: 936-271-7801 Website: http://www.onestepdiagnostic.com/ Map & Directions 3117 College Park Dr #100 Get Help!If you have been injured, please complete this form to have an office contact you. Notice: JavaScript is required for this content.