Plastic Surgery Center of Dallas The Plastic Surgery Center of Dallas, office of Dr. Rachel Walker, has a beautiful onsite surgical facility including a state-of-the-art operating room and comfortable recovery facility. We have been fully licensed and accredited as an AAAASF facility since 1995. One of our staff will be happy to provide you with a tour of our facility in non-operating times. It is the mission of the American Association for Accreditation of Ambulatory Surgery Facilities, Inc. (AAAASF) to develop and implement standards of excellence to ensure the highest quality of patient safety through an accreditation program.