Faculty & Residency Leadership

Thomas F. Patterson, MD, MACP, FIDSA

Department Chair
Department of Medicine
Email: patterson@uthscsa.edu

Dr. Patterson received his Bachelor of Arts degree from Baylor University, in Waco, Texas and his medical degree from the McGovern Medical School, Houston where he was Alpha Omega Alpha. He completed his internship and residency at Vanderbilt University Medical School and at Yale-New Haven Hospital, and a fellowship in Infectious Diseases at Yale University School of Medicine where he also served as an Assistant Professor of Medicine. He joined the LSOM faculty in 1993 and rose to the rank of Professor in 2000. He became Chief, Division of Infectious Diseases in 2008. He is recognized as an expert in Medical Mycology and clinical trials.  He was elected to the Association of American Physicians and was awarded a Mastership in the American College of Physicians (MACP).  He was appointed Chair of Medicine holding the Marvin Forland Endowed Chair March 2025.

Stephanie M Levine, MD

Vice Chair of Education
Department of Medicine
Email: levines@uthscsa.edu

Dr. Levine is a Professor of Medicine with tenure in the Department of Medicine, Division of Pulmonary Diseases and Critical Care Medicine at UT Health San Antonio.  She is board-certified in internal medicine,pulmonary disease, and critical care medicine. Dr. Levine received her undergraduate degree from the University of Pennsylvania and her medical degree from the George Washington University School of Medicine, where she was amember of the Alpha Omega Alpha Medical Honor Society. She completed her Internship and Residency in Internal Medicine and Fellowship in Pulmonary Disease and Critical Care Medicine at the New York University-Manhattan Veterans Administration-Bellevue Hospital Program in New York City.  Dr. Levine is the Program Director of the Pulmonary and Critical Care Fellowship at UT Health- San Antonio. She also is a staff physician at the Audie Murphy Veteran Administration Hospital.  Dr. Levine has authored or co-authored over 270 manuscripts, chapters, reviews, editorials, and abstracts, primarily in her major field of interest, lung transplantation. Her other areas of interest include pulmonary and critical care issues in pregnancy and women’s lung health, and eosinophilic lung disorders. She is currently the Vice Chair for Education for the Department of Medicine at UT Health San Antonio.

Jane O’Rorke, MD

Residency Program Director
Email: ororke@uthscsa.edu

Dr. O’Rorke received her BA with high honors from Mount Holyoke College in South Hadley, MA and attended The State University of New York Downstate Medical Center in Brooklyn, NY where she was elected to the Alpha Omega Alpha Medical Honors Society. After completing her Internship and Residency at the UT Health San Antonio she served as Chief Resident of the program. She went on to complete a Faculty Development Fellowship at the University of North Carolina – Chapel Hill. She has won numerous teaching awards including Southern Society of General Internal Medicine Clinician Educator-of-the-Year Award and Outstanding Teacher-of-the-Year Award for the Division of General Internal Medicine, and the University of Texas Presidential Teaching Excellence Award. She is currently Professor of Medicine in the Division of Hospital Medicine.

Megan Freeman, MD

Associate Program Director
Email: hornm@uthscsa.edu

Dr. Freeman joined the Division of General and Hospital Medicine as an Assistant Professor / Clinical at UT Health San Antonio and as a Hospitalist at University Hospital in 2014. She received her Doctor of Medicine in 2010 and completed an Internal Medicine residency in 2013 from University of Texas Health Science Center San Antonio.  Dr. Freeman also serves as the Systems of Care Didactic and Quality Improvement/Patient Safety Curricular Director for the Internal Medicine Residency Program since 2014. She serves of the Associate Clerkship Director for the Internal Medicine Clerkship and teaches students as a Synthesis Case Facilitator.  She is American Board of Internal Medicine certified since 2013 and is a member of American College of Physicians and Academic Alliance of Internal Medicine.

Kanapa Kornsawad, MD

Associate Program Director
Email: kornsawad@uthscsa.edu

Dr. Kornsawad is an Associate Professor/Clinical Hospitalist in the division of Hospital Medicine since 2013. Dr. Kornsawad received her M.D from Chulalongkorn University in Thailand and completed her residency in Internal Medicine at University of Texas Health San Antonio in 2013. She was the Site Director for the Internal Medicine Residency at University Hospital and then became an APD. She also serves as a course director for intern Learning Group for the program. In 2016, she was inducted into the Gold Humanism Honor Society (GHHS) as a Faculty Member and now serves as a faculty advisor for the local chapter. She has received numerous teaching and mentoring awards from both medical students, residents, and division. She also received the Colette M. Kohler M.D. Women Leadership Award from Bexar County Medical Society in 2021.  Her educational areas of interest and research include interprofessional education, humanism in medicine, career coaching, and physician wellness and burnout.

Kristen Glass, MD

Associate Program Director
Email: glassk2@uthscsa.edu

Dr. Glass is an Associate Professor / Clinical for UT Health San Antonio in the Division of General Medicine since 2018. Dr. Glass serves as the Section Chief for the Academic Medicine group located at Audie L. Murphy Hospital.  She received her M.D. from Creighton University School of Medicine in 2004 and completed her residency in Internal Medicine at the San Antonio Uniformed Services Health Education Consortium/ Wilford Hall, Lackland AFB program in 2007.  She served thirteen years in the United States Air Force where she served in numerous roles to include Medical Director of large outpatient Internal Medicine Clinic and Associate Program Director for large Internal Medicine Residency program.  Dr. Glass is a clinician-educator focusing on graduate medical education in the ambulatory primary care setting.

Emily Wang, MD

Associate Program Director
Email: wange@uthscsa.edu

Dr. Wang graduated with a BA in Molecular Cell Biology from the University of California at Berkeley. She returned to Texas for medical school and Internal Medicine Residency at the UT Health San Antonio Long School of Medicine and finished in 2003. She practiced as private practice hospitalist in the Austin, Texas area and then returned to UT Heath San Antonio in 2008. She joined the Internal Medicine Residency clinic at Audie Murphy VA Hospital and transitioned back to hospital medicine with her primary hospital practice at the VA. Her areas of interest include perioperative medicine, medicine consultation/co-management and hospitalists and their role of triaging inpatient admissions and patient flow. She currently an Associate Professor in the Division of Hospital Medicine.

Aesha Aboueisha, MD

Associate Program Director
Email: Aboueishaa@uthscsa.edu

Dr. Aesha Aboueisha is a published, board-certified Hospitalist who joined UT Health San Antonio as an Assistant Professor/Clinical in May 2022, also becoming an Associate Program Director of the Internal Medicine residency program in April 2024. Dr. Aboueisha earned her Bachelor of Arts in Psychology at the University of Texas at San Antonio in 2013 before going on to earn her Doctor of Medicine at the University of Texas Medical Branch in Galveston, TX in 2018. After completing her Internal Medicine residency at University of Texas Medical Branch Galveston in June 2021, Dr. Aboueisha became the Chief of Service and a Clinical Instructor at UTMB in July 2021. Dr. Aboueisha is a member of several professional organizations including the American College of Physicians, the National Society of Leadership and Success, and the American Medical Women’s Association.

Dr. Aboueisha is the recipient of the Division of Hospital Medicine’s “Rookie MD of the Year Award” (2023), nominated by her peers in recognition of being a rising star in the MD group.

Robert Nathanson, MD

Associate Program Director
Email: nathansonr3@uthscsa.edu

Dr. Nathanson is an Associate Professor / Clinical of Medicine for UT Health San Antonio and practices as a hospitalist at the South Texas Veterans Health Care System. He received his MD from the University of Texas Medical Branch in 2010 and completed his residency in internal medicine at UT Health San Antonio in 2013. He served as chief resident from 2013-2014 and joined as faculty for the Division of Hospital Medicine in 2014. He currently serves as Associate Program Director, director of the Point-of-Care Ultrasound (POCUS) Track, and co-director of the medicine procedure service for the Internal Medicine Residency Program. Dr. Nathanson has received numerous teaching awards from medical students and residents, and received the UT Presidential Award for Teaching Excellence- Emerging in 2022. He is American Board of Internal Medicine certified since 2013 and is an active member of the American College of Physicians and Society of Hospital Medicine.