St. David's HealthCare

St. David's HealthCare is one of the largest health systems in Texas and Austin's third-
largest private employer, with more than 60 sites throughout Central Texas, including
seven hospitals, four urgent care centers, four ambulatory surgery centers, and two
freestanding emergency departments, with a third set to open in Bastrop this summer.

St. David's HealthCare has a long history of serving the residents of Central Texas
with exceptional medical care. Our 7,500 employees touch over 858,000 lives each
year with a spirit of warmth, friendliness and personal pride.

Trauma Leadership

Trauma Services at St. David’s Round Rock Medical Center opened in January 2010, providing care for all levels of trauma patients. In preparation for the service, the medical center recruited a highly trained and experienced trauma staff, joining a medical team already providing complex medical services. The program is a multi-specialty service with general surgery, orthopedic surgery and neurosurgery at its core. The team functions under the direction of Chief Medical Officer David Martin, MD, a general surgeon with 14 years of trauma experience.

Michael L. Craun, MD, FACS

Trauma Medical Director

Deborah L. Ryle, FACHE St. David’s Round Rock Medical Center

Trauma Medical Director Michael L. Craun, MD, FACS, is a highly qualified and experienced trauma surgeon and critical care specialist. Prior to joining St. David’s Round Rock Medical Center in January 2010, Dr. Craun served as the Medical Director of Trauma Services for the Level I Trauma Center at Scott & White Hospital in Temple. Previously, Dr. Craun was the Medical Director of Trauma Services at Swedish Medical Center in Englewood, CO, a Level I Trauma Center in the Denver metro area.

Dr. Craun has made notable professional accomplishments in the field of trauma. He developed trauma programs at both Harris Methodist Hospital in Fort Worth and Hillcrest Baptist Medical Center in Waco, resulting in verification at each hospital by the American College of Surgeons as a Level II Trauma Center. In addition, he has written numerous publications on trauma-related topics and is eagerly engaged in regional trauma education and Emergency Medical Services activities.

Dr. Craun holds a doctor of medicine degree from The University of Texas, Southwestern Medical School in Dallas. He is board certified by the American Board of Surgery and is a fellow of the American College of Surgeons, the American Association for the Surgery of Trauma and the Society of Critical Care medicine.




Mark Parrella, MD

Orthopedic Trauma Medical Director

St. David’s Round Rock Medical Center

Mark Parrella, MD, is a board certified orthopedic surgeon specializing in trauma care. He received a medical degree from Georgetown University School of Medicine in Washington, DC, where he also completed a Master’s degree in Physiology and Biophysics. Dr. Parrella holds a Bachelor’s degree in Biology from Lehigh University in Bethlehem, Pennsylvania. Following medical school, Dr. Parrella completed his internship and residency at Drexel University School of Medicine in Philadelphia, Pennsylvania. He continued his professional training, completing a Fellowship in Orthopaedic Traumatology at the Campbell Foundation in Memphis, Tennessee.

Dr. Parrella is an Assistant Professor at Texas A&M Health Science Center COM in Round Rock, and has served on the faculty at AONA in Devon, Pennsylvania.



Mario Longoria, MD

Surgical Trauma Medical Staff

St. David’s Round Rock Medical Center

Dr. Longoria received his medical degree from the University of Texas Medical Branch in Galveston, and completed his general surgery residency at the University of Missouri at Kansas City, where he was honored as chief resident of the year. He then embarked on his Fellowship in Advanced Laparoscopic Surgery at the University of California at Irvine. While there, he conducted clinical research involving laparoscopic gastrectomy and gastric bypass surgery and also served as clinical instructor for laparoscopic colectomy workshops.

Dr. Longoria is board certified in general surgery and has a particular interest in advanced laparoscopic procedures, laparoscopic surgical treatment of colon cancer, reflux disease, solid organ cancers, endocrine surgery, trauma surgery as well as gastric bypass, sleeve gastrectomy and the Lap-Band procedure to treat morbid obesity.



Andy L. Hawthorne, MD

Surgical Trauma Medical Staff

HawthorneSt. David’s Round Rock Medical Center

Andy L. Hawthorne, MD, is a general surgeon with a special interest in advanced laparoscopy and bariatric procedures. He is a Clinical Assistant Professor for Texas A&M School of Medicine, and is board certified by the American Board of Surgery, an Associate Fellow of the American College of Surgeons, and ACLS and ATLS certified. A graduate of the University of Texas Medical School at Houston, Dr. Hawthorne completed a surgical residency at Baylor University Medical Center in Dallas, where he was named “Most Outstanding 4th Year Resident on Cardiothoracic Surgery.”
In 2003, Dr. Hawthorne presented “The Role of Routine Upper GI Series Following Roux-en Y Gastric Bypass” to a meeting of the North Texas American College of Surgeons.




Brady E. Anderson, MD

Surgical Trauma Medical Staff

Anderson St. David’s Round Rock Medical Center

Brady E. Anderson, MD, is a general surgeon who has special interests in advanced laparoscopy, as well as endocrine and bariatric surgeries. He is a Clinical Assistant Professor for Texas A&M School of Medicine. Dr. Anderson holds a medical degree from Texas Tech University Health Sciences, and completed a surgical internship and residency at Baylor University Medical Center in Dallas. Following completion of his residency, Dr. Anderson pursued additional surgical training at Kindred Hospital, also in Dallas. 

Dr. Anderson is the recipient of numerous academic awards, including the “Chairman’s Award for General Surgery” (Texas Tech) and “Outstanding Resident in Cardiothoracic Surgery” (Baylor). He is ATLS certified.



Bratcher Runyan, MD

Surgical Trauma Medical Staff

RunyanSt. David’s Round Rock Medical Center

Bratcher Runyan, MD, is a board certified general surgeon. He received a medical degree from the University of Texas School of Medicine in Houston and holds a Bachelor of Science, Magna Cum Laude, from Texas Christian University in Fort Worth. Following graduation from medical school, Dr. Runyan completed an internship and surgical residency at the University of Kansas School of Medicine in Wichita. He has performed medical research on various aspects of surgery, and has presented his findings at professional conferences throughout the southwest region.

Dr. Runyan has held numerous administrative appointments throughout his career, including service on the Cancer Committee (Memorial Health System, Houston, Texas); Credentials Committee (Woodland Heights Medical Center, Lufkin, Texas); and the Infection Control Committee (Wesley Hospital, Wichita, Kansas). He is certified in several forms of life support beyond the basic level, including Advanced Cardiac Life Support, Pediatric Advanced Life Support and Advanced Trauma Life Support.



Aravind B. Sankar, MD, FACS

Surgical Trauma Medical Staff

Tad A. Hatton St. David’s Round Rock Medical Center

Aravind B. Sankar, MD, is an experienced general surgeon with a strong background in both clinical and academic environments. He has practiced surgery in Austin since 2000, and currently serves as a Clinical Assistant Professor at the University of Texas Health Science Center at San Antonio (since 2006) and Chief of Surgery at St. David’s North Austin Medical Center (since 2004). He is board certified by the American Board of Surgery and a Fellow of the American College of Surgeons.

Dr. Sankar is the recipient of many honors, including the Cardiopulmonics Book Award, the Joseph B. Kass Award for Research, the Alpha Omega Alpha Award, and the Donald W. Duncan Memorial Award in Anatomy. In 2007, Texas Monthly magazine named Dr. Sankar a Super Doctor. An active volunteer in the medical community, Dr. Sankar has held a variety of hospital-based committee positions. A noted medical researcher, Dr. Sankar’s works have been published in a number of medical journals and prestigious medical textbooks. His publications include “Surgery of the Thoracic Trachea,” “Cardiac Tamponade,” “Inflammatory Abdominal Aortic Aneurysms,” and a diverse range of other surgical topics. Dr. Sankar is frequently invited to present his findings at medical conferences.

Dr. Sankar holds a medical degree from the University of Texas Medical Branch in Galveston, where he also completed his surgical internship and residency. Following completion of the residency program, he was awarded a Burn Research Fellowship by the Shriners Hospitals for Crippled Children in Galveston. Dr. Sankar was born and raised in Long Beach, California, and received a bachelor’s degree in Physics from Reed College in Portland, Oregon.



Orthopedic Trauma Team

Jay M. Borick, MD

Jennifer N. Lord, MD

Mark Parella, MD

Mustasim N. Rumi, MD

Michael S. Valastro, MD



Neuro Trauma Team

Mark G. Burnett, MD

Douglas J. Fox Jr., MD

James Waldron, MD

K. Michael Webb, MD

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Medical Services

  • Breast Care and Women's Imaging
  • Cancer
  • Emergency Department
  • Heart and Vascular Services
  • Imaging Services
  • Newborn and Infant
  • Orthopedics
  • Rehabilitation Services
  • Surgery
  • Weight Loss Surgery
  • Wound Care
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St. David's Round Rock Medical Center
2400 Round Rock Ave.
Round Rock, TX 78681
Telephone: (512) 341-1000
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