2012 Ashbel Smith Distinguished Alumnus Awards


Bohn D. AllenBohn D. Allen, MD, FACS – Class of 1961

Dr. Allen attended The University of Texas in Austin and graduated from The University of Texas Medical Branch in Galveston in 1961. He served an internship at Fitzsimmons General Hospital in Denver, Colorado; a residency in general and vascular surgery at Madigan General Hospital in Tacoma, Washington; and a fellowship in burns at the Institute of Surgical Research Burn Unit at Brooke Army Medical Center in San Antonio.

Dr. Allen is past president of Arlington Medical Society, Tarrant County Medical Society, and Fort Worth Surgical Society. He is past president of the Texas Medical Association, having served various positions on TMA boards, councils, and committees.  He was a delegate to the American Medical Association from Texas for sixteen years and he is a past president of the Texas Surgical Society.

Dr. Allen serves as chairman of the Board of Trustees of Arlington Memorial Hospital and serves on the Board of Trustees of the Texas Health Resources hospital system. Dr. Allen was in private practice in Arlington, Texas for thirty-two years. He now serves as the physician director of the Outpatient Surgery Clinic at John Peter Smith Hospital in Fort Worth, Texas teaching surgical residents and medical students.


Gerald CallasGerald Callas, MD, PhD – Class of 1976

Dr. Callas attended Lamar State University and received a Bachelor of Science Degree. He was accepted in the graduate program at UTMB and went to work in the accelerated program to begin his PhD and MD degree. Dr. Callas funded his education by teaching gymnastics and, as a result, with his wife Carolyn, Dr. Callas owned a dance academy for 47 years.

Dr. Callas received his PhD in 1966 and his MD in 1967. With his dual degree, he committed his career to giving aspiring physicians the biomedical knowledge that is the foundation of medical practice. Dr. Callas was a faculty hooder for graduating medical students for many years, and his Gross Anatomy Class was voted Best Course Award Freshman Year for seven years. In addition to the many students’ lives Dr. Callas has touched, he has the privilege of teaching his two sons anatomy. Both are successfully practicing physicians. His son, Ray, is an anesthesiologist and his, Jamie, a radiologist.  Dr. Callas stands for UTMB’s most cherished values: a devotion to instilling knowledge in the university’s aspiring physicians.


Mark W. NewtonMark W. Newton, MD, FAAP – Class of 1987

Dr. Newton received his medical degree from UTMB in 1987. He completed both an internship in pediatrics and a residency in anesthesiology at University of Texas Health Sciences Center.  Dr. Newton completed a fellowship in pediatric anesthesiology at Denver Children’s Hospital.

Dr. Newton began participating in international medical work in the mid-1980s while still a medical student at UTMB. In 1986 during his senior year at UTMB, he spent two months in Nigeria in a mission hospital which prompted his passion to serve the poor in Africa. From 1992-1997, Dr. Newton worked as a pediatric (cardiac) anesthesiologist at Denver Children’s Hospital and a clinical instructor for the Department of Anesthesiology at University of Colorado Health Sciences Center. During this time, he continued to participate in medical mission work, working in Nigeria, Guatemala, El Salvador, Ecuador and Mexico.

Dr. Newton is an Associate Clinical Professor in the Department of Anesthesiology at Vanderbilt University School of Medicine and a pediatric anesthesiologist at Monroe Carell Jr. Children’s Hospital in Vanderbilt. In addition to his many responsibilities, accomplishments, education and research while at Vanderbilt, Dr. Newton received recognition in February 2012 for his humanitarian efforts in healthcare by the American Medical Association with the presentation of the Dr. Nathan Davis International Award in Medicine. Named for AMA’s founder, the award recognizes physicians whose influence reach the international patient population and change the future of their medical care.

Dr. Newton serves as Chief Anesthesiologist at Kijabe Hospital, Kenya and faculty member of the University of Nairobi, Department of Surgery (Anesthesia) where he is involved in physician anesthesia training, CME, and national anesthesia development programs.  Dr. Newton and his wife, Sue, have five children.


John D. OswaltJohn D. Oswalt, MD, FACS – Class of 1971

Dr. John D. Oswalt is a member of the Cardiothoracic and Vascular Surgeons in Austin, Texas. He earned a biology degree from Texas Christian University in Fort Worth, Texas in 1968 and medical degree in 1971 from The University of Texas Medical Branch at Galveston.

He completed his internship at Brackenridge Hospital in Austin, and following his service in the United States Air Forces as a Flight Surgeon, he carried out his residency at The University of Texas Health Science Center at San Antonio in the area of general surgery. He completed a cardiothoracic surgery fellowship in 1980.

Dr. Oswalt joined the group Cardiothoracic and Vascular Surgeons in 1980 and at that time there were six members. He became president in 1996 helping the group which now numbers twenty-two surgeons. This group remains one of the largest practicing groups of its kind in the US. In addition, he has held several academic and administrative appointments with various hospitals in Texas.

One of Dr. Oswalt’s greatest achievements has been the founding of the HeartGift Foundation. It is an organization that brings children from developing countries with congenital heart defects to the US for life-saving surgery. The care is provided in children’s hospitals by surgeons, nurses and health care providers pro bono.

Dr. Oswalt received the Distinguished Alumnus Award from Texas Christian University in 1995, Cardiac Provider of the Year from the American Heart Association in 1999 and Austin Business Journal, Health Care Hero Award in 2010, among many other awards and achievements throughout his prominent career.

Dr. Oswalt is a native of West Texas, Fort Stockton, though born in Houston. His father, Dr. Charles Oswalt, is a UTMB SOM 1940 graduate and his brother Chuck is a 1970 graduate of UTMB with brothers Bill and Barry receiving their medical degrees from Texas Tech University Health Sciences Center.

Dr. Oswalt and his wife, Karen, reside in Austin where they raised their two daughters, Sara and Claire, who are now married. They have one grandson, Ozzie, who is named after his great grandfather.


Frank C. SchmalstiegFrank C. Schmalstieg, MD, PhD – Class of 1972

Dr. Frank C. Schmalstieg received a doctor of philosophy degree in physical organic chemistry from Texas A & M University in 1967. He helped demonstrate that certain chemical reactions could be influenced  by quantum mechanical effects in post-doctoral work at Gerogia Institute of Technology and that polyethylenimine polymers could be constructed with enzymatic properties at Ohio State University.

Dr. Schmalstieg became interested in applying his physical chemistry background to Medicine, and subsequently graduated from the University of Texas Medical Branch with a degree in Medicine in 1972. Attracted to the molecular puzzle of congenital immunodeficiency diseases, he completed a residency in Pediatrics in 1974 and Felloship in Allergy and Immunology in 1976.

He joined the faculty of medicine in 1976 as an assistant professor. Since that time, he has made significant contributions to understanding the molecular defects in the leukocyte adherence syndrome and X-linked severe combined immunodeficiency.

In addition to his scientific efforts, Dr. Schmalstieg has served on numerous university committees including Chairman of the Institutional Review Board. He has also maintained a clinical and laboratory service for immunodeficiency and pediatric rheumatology patients for many years. He participates with his colleague and mentor, Dr. Armond Goldman, in studies of the history of medicine.

Dr. Schmalstieg is married to Dr. elisabeth Schmalstieg, a UTMB School of Medicine graduate and faculty member. Their son, Dr. William Schmalstieg, is a Post-doctoral Fellow in Neurology at the Mayo Clinic in Rochester, Minnesota.

For more information on the 2012 ASDA event click here.

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