The state of Texas maintains a registry of all nurse aides who are certified to provide services in nursing facilities and skilled nursing facilities licensed by the Texas Department of Aging and Disability Services (DADS). Nurse aide certification activities are conducted by the Nursing Facility Administrator Licensing Branch and include approval and monitoring of nurse aide training and competency evaluation programs (NATCEPs) and issuance and continuance of nurse aide registrations, including oversight of nurse aide testing development and administration.
According to the information on their webpage, they are in the process of implementing an online system for nurse aides as of 2015. You may want to contact them at 512-438-2050 to ask if online license renewals will become available soon.