C O L L I N C O U N T Y. Collin County Health Care Services. 825 N. McDonald St. Suite 130.Medical Record Request. Purpose. To obtain an individual's authorization to release medical information to: the Texas Health and Human Services Commission (HHSC). Fill out the registration forms listed below in advance of your appointment to assist the staff in making sure that we have all the information necessary. " Submit Documentation. Form 6700, Use and Release of Health Information Authorization. Instructions for Opening a Form. Use Fill to complete blank online COLLIN COUNTY GOVERNMENT (TX) pdf forms for free.