Tex. Gov't Code § 487.557

A health professional who participates in a program under this subchapter may not use telecommunication technology, including telemedicine, as the sole or primary method of providing services and may not use telecommunication technology as a substitute for providing health care services in person. A health professional who participates in a program under this subchapter may use telecommunication technology only to supplement or enhance the health care services provided by the health professional.