Reuben Arasaratnam, M.D.

Dr. Arasaratnam is Associate Professor of Internal Medicine and a member of the Division of Infectious Diseases and Geographic Medicine. Originally from Ascot, England, Dr. Arasaratnam holds a bachelor's degree in physiology from the University of Cambridge. He received his medical degree from the University of Oxford Medical School, where he graduated with honors, and obtained internal medicine residency training at Oxford University Hospitals. He subsequently moved to the United States to pursue further internal medicine training at the University of North Carolina in Chapel Hill and then completed advanced training through a fellowship program in infectious diseases at Baylor College of Medicine in Houston. He also obtained a master's degree in public health from the Harvard T.H. Chan School of Public Health in Boston.

Certified by the American Board of Internal Medicine in internal medicine and infectious diseases, Dr. Arasaratnam joined the UT Southwestern faculty in 2017. He pursued research training in translational viral immunology, resulting in one of the first prospective multi-virus characterizations of T cell immunity in a pediatric solid organ transplant cohort, and another study identifying dominant T cell targets of Parainfluenza virus 3.

James Dazhe Cao, M.D.

Dr. Cao is Associate Professor of Emergency Medicine and Division Chief of Medical Toxicology in the Department of Emergency Medicine at UT Southwestern Medical Center.

Dr. Cao earned his medical degree at Baylor College of Medicine. He completed a residency in emergency medicine at Carolinas Medical Center and received advanced training in medical toxicology through a fellowship at Rocky Mountain Poison & Drug Safety.

Certified by the American Board of Emergency Medicine in emergency medicine and medical toxicology, he joined the UT Southwestern faculty in 2015. Dr. Cao is the Medical Director of Toxicology for the Parkland Health & Hospital System.

Ondine Cleaver, Ph.D.

Dr. Cleaver is Professor, Molecular Biology, and Principle Investigator for the Cleaver Lab. Born in Palo Alto, California, Dr. Cleaver grew up in Quebec, Canada. She received her B.S. in Molecular Biology and B.A. in History at UT Austin. She also earned her graduate degree at UT Austin, focusing on the role of VEGF and VEGFR2 on endothelial progenitor patterning with Dr. Paul Krieg.

She performed her postgraduate research at Harvard, in the Department of Cellular and Molecular Biology with Dr. Douglas Melton. She identified vascular signals important during the specification of pancreatic beta cells. Dr. Cleaver joined UT Southwestern’s Molecular Biology as faculty in late 2004 and was promoted to Associate Professor in 2010.

Her lab studies cell fate and how cells assemble into tissues. Her group is particularly interested in intracellular signaling events that drive cytoskeletal or adhesion changes within progenitor cells, allowing them to assemble into functional tissues. She focuses on blood vessels and on developing organs, such as the pancreas, the kidney, and the lung. She is interested in how cues in the microenvironment drive vascular assembly or growth, and how blood vessels in turn communicate paracrine, non-nutritional signals to stem cell niches.

Adriane dela Cruz, M.D., Ph.D.

Dr. dela Cruz is Associate Professor, Psychiatry, focusing on treating patients with drug and alcohol addictions.

Dr. dela Cruz earned her medical and graduate degrees at the University of Texas Medical Branch (UTMB) in Galveston. Following her residency in psychiatry at UT Southwestern, she completed advanced training in addiction psychiatry at UT Southwestern. Dr. dela Cruz joined the UT Southwestern faculty in 2016.

In addition to her clinical practice, Dr. dela Cruz is active in research and education. Her research work has been published in journals including the Journal of Psychiatric Research and The American Journal on Addictions. She developed a curriculum for training psychiatry residents in understanding medical literature, which has been published by the American Association of Directors of Psychiatric Residency Training. She received a Faculty Innovation in Education Award from the American Board of Psychiatry and Neurology in 2020-21 for her project "From 'Yeah, No' to 'Yeah, Yeah!': Development and Assessment of a Podcast to Promote Critical Evaluation of the Literature and Lifelong Learning in Psychiatry."

Michael Green, M.D.

Dr. Green is Professor of Pediatrics. Dr. Green graduated from Baylor University in 2000 and from the UT Health Science Center at San Antonio in 2004. He completed his pediatric residency at Vanderbilt University Medical Center in 2007. Following his general pediatrics training, he completed his pediatric critical care fellowship at Boston Children’s Hospital in 2010. During his time in Boston, he completed the Program in Clinical Effectiveness at the Harvard School of Public Health in 2008.

He joined the faculty at UT Southwestern in 2010. Dr. Green practices in both the Pediatric Intensive Care Unit (PICU) and the Cardiac Intensive Care Unit (CVICU) at Children’s Medical Center.

His main interest is in medical education. He has collaborated with the Educators in Pediatric Intensive Care (EPIC) research group, which conducts multicenter studies focused on medical education in pediatric critical care. He served as director of the pediatric critical care fellowship program at UT Southwestern from 2016-2023. He also serves as a member of the ethics committee at Children’s Medical Center. In 2022, he became the Assistant Designated Institutional Official (DIO) at UTSW. In 2023, he was appointed as the UTSW Assistant Dean for Graduate Medical Education and DIO.

Elizabeth Heitman, Ph.D.

Dr. Heitman is Professor in the Department of Psychiatry’s Division of Ethics and the Program in Ethics in Science and Medicine, with secondary appointments in the Department of Applied Clinical Research and the O'Donnell School of Public Health. Her work focuses on cultural aspects of ethics in clinical medicine, biomedical science, and public health, particularly international standards of research ethics and education in the responsible conduct of research (RCR).

Dr. Heitman teaches research ethics and RCR in the Center for Translational Medicine and Graduate School of Biomedical Sciences, and is an ethics facilitator for medical students. She leads ethics and RCR education for two training grants on cardiovascular health disparities research through the National Heart, Lung, and Blood Institute, and she is director/multiple principal investigator (MPI) of two international research ethics education grants from the Fogarty International Center. Dr. Heitman is a National Associate of the U.S. National Research Council and has been chair or member of eight U.S. National Academy of Sciences programs in research integrity education in the Middle East, North Africa, Indonesia, and Malaysia.

Dr. Heitman came to UT Southwestern from Vanderbilt University Medical Center’s Center for Biomedical Ethics and Society, where she was a member of the Academy for Excellence in Teaching and served as a clinical ethics consultant and chair of the Ethics Committee for Vanderbilt University Hospital. She was previously on the faculty the University of Texas School of Public Health in Houston, Texas, and was clinical ethicist at Hermann Hospital and Lyndon Baines Johnson General Hospital.

Namirah Jamshed, M.D.

Dr. Jamshed is Professor in the Department of Internal Medicine at UT Southwestern Medical Center and a member of the Division of Geriatric Medicine. A specialist in geriatric medicine and dementia, she serves as Medical Director of Care of the Vulnerable Elderly (COVE), UTSW's home-based primary care program. She is also the Director of the Geriatric Fellowship program.

Dr. Jamshed earned her medical degree at the Aga Khan University Medical College in Karachi, Pakistan. She completed a residency in family medicine at the Latrobe Area Hospital in Pennsylvania and received advanced training in geriatrics through a fellowship at the University of California-Los Angeles. She later completed a master's degree in healthcare management and leadership at the University of Texas at Dallas. Certified by the American Board of Family Medicine, Dr. Jamshed joined the UT Southwestern faculty in 2015.

Dr. Jamshed’s research interests include population health, health policy, and teaching. Her investigations have led to a dozen peer-reviewed journal articles, reviews, and book chapters. In addition, she has presented her findings throughout the United States and around the world. At UT Southwestern, Dr. Jamshed is the Medical Director of the House Call program and she has served as chair of the Diversity, Equity, and Inclusion Committee. Dr. Jamshed is a member of the American Academy of Home Care Medicine, which she serves as a member of the Education, Awards, and Governance committees, and the American Geriatrics Society, which she serves as co-chair of the Home-Based Patient Care committee.

Ricardo La Hoz, M.D.

Dr. La Hoz is Associate Professor in the Department of Internal Medicine at UT Southwestern Medical Center and a member of its Division of Infectious Diseases and Geographic Medicine. He serves as Director of Solid Organ Transplant Infectious Diseases, Program Director of the Transplant Infectious Diseases Fellowship, and Medical Director of the Transplant Services Center.

Originally from Lima, Peru, Dr. La Hoz earned his bachelor’s degree in biology and medical degree from Universidad Peruana Cayetano Heredia (UPCH), graduating at the top of his class. He completed his internal medicine residency and infectious diseases fellowship at the University of Alabama at Birmingham, where he also spent a dedicated year focusing on the immunocompromised host. Prior to joining the UT Southwestern faculty in 2015, Dr. La Hoz served on the faculty at Wake Forest School of Medicine in Winston-Salem, North Carolina.

In 2017, Dr. La Hoz was recognized as a Fellow of the American Society of Transplantation (FAST) for his commitment to the field of transplantation and his outstanding service to the society. His achievements were further acknowledged in 2019 when he was named a Fellow of the Infectious Diseases Society of America (FIDSA). Since 2024, he has served as Chair of the American Society of Transplantation Infectious Diseases Community of Practice. Dr. La Hoz’s research and clinical work focus on the prevention and treatment of infectious complications in solid organ transplant recipients. He has received research funding from the UT Southwestern Center for Translational Medicine and the National Institutes of Health, and his work has been published in leading journals. In 2019, his expertise was further recognized with his appointment as an Associate Editor for the American Journal of Transplantation.

Kareem AbdelFattah, M.D.

Dr. AbdelFattah is Assistant Professor in UT Southwestern’s Department of Surgery. He specializes in trauma and critical care surgery and general surgery.

Dr. Abdelfattah earned his medical degree at the University of South Florida Morsani College of Medicine. He completed a residency in general surgery and a fellowship in burns, trauma, and critical care at UT Southwestern. He sees patients at the three dedicated trauma services at Parkland and at the UT Southwestern Burn Unit, which serves as the regional burn unit for North Texas.

Dr. Abdelfattah’s research interests include metabolism and nutrition in critical illness and surgical education. He is a member of the American College of Surgeons and the American Association for Surgery of Trauma.

Catherine Barden, M.D.

Dr. Barden is an Associate Professor and Vice Chair of Education in the Department of Anesthesiology and Pain Management at UT Southwestern Medical Center. She specializes in neuroanesthesiology.

Dr. Barden earned her medical degree at Tulane University School of Medicine and completed a residency in anesthesiology at NewYork-Presbyterian/Weill Cornell Medical Center. Certified by the American Board of Anesthesiology, she joined the UT Southwestern faculty in 2006.

Dr. Barden lectures and publishes scholarly articles on medical education and neuroanesthesia. She is a member of the Alpha Omega Alpha Honor Medical Society, the American Society of Anesthesiologists, the Dallas County Medical Society, and the Texas Society of Anesthesiologists. She is also an American Board of Anesthesiology APPLIED examiner.

Molly Camp, M.D.

Dr. Camp is an Associate Professor in the Department of Psychiatry at UT Southwestern Medical Center. She specializes in geriatric mental health and cognitive and memory disorders.

Dr. Camp earned her medical degree at the University of Texas Health Science Center at Houston. She completed residency training in psychiatry at Baylor College of Medicine and UT Southwestern and then received advanced training in geriatric psychiatry through a fellowship at UT Southwestern. Certified by the American Board of Psychiatry and Neurology in psychiatry and geriatric psychiatry, she joined the UT Southwestern faculty in 2012.

Dr. Camp is the Director of the Neurocognitive and Geriatric Psychiatry Program in the UT Southwestern Psychiatry Outpatient Clinic. She is also the Associate Program Director of the combined Psychiatry and Neurology Residency Program. She serves on the teaching and training committee for the American Association for Geriatric Psychiatry and on the Curriculum and Assessment Review Task Force for the American Association of Directors of Psychiatric Residency Training. Dr. Camp earned an Early Career Development Award in 2014 from the Association for Academic Psychiatry, and in 2016, she received an Outstanding Clinical Educator award from UTSW’s Southwestern Academy of Teachers.

She received the 2020-21 Faculty Innovation in Education Award from the American Board of Psychiatry and Neurology for her project "Neurocognitive Psychiatry: A Study of Current Practices and Development of a Simulation Based Curriculum." In 2023 she was honored as the Geriatric Psychiatry Educator of the Year by the American Association for Geriatric Psychiatry.

Philip Greilich, M.D.

Dr. Greilich is a Professor of Anesthesiology & Pain Management and serves as a Quality Officer for the Executive Vice President for Health System Affairs. Dr. Greilich is a practicing cardiovascular anesthesiologist involved in quality, safety and health services research.

He received his B.A from Texas A&M University, M.D. from Texas Tech University School of Medicine and underwent residency and sub-specialty training at the Medical College of Virginia/VCU. He received advance training in healthcare delivery from the Intermountain Institute of Healthcare Quality and Research and will complete an executive program (M.Sc) in Healthcare Leadership and Management at the Naveen Jindal School of Management (UT Dallas) in 2018.

Dr. Greilich’s research focuses on understanding the influence of patient, provider and organizational ergonomics on outcomes when implementing and diffusing best practices. His research has been funded by the National Institutes of Health, Agency for Healthcare Research and Quality and the Departments of Defense and Veterans’ Affairs, among others. Nationally, he serves on the Patient Safety and Quality Leadership Steering Committee for the Society of Cardiovascular Anesthesiologists and is the Founding Chair the Multi-Center Perioperative Handover Collaborative.

Zaiba Jetpuri, D.O.

Dr. Jetpuri is an Associate Professor in the Department of Family and Community Medicine at UT Southwestern Medical Center. She specializes in the prevention and treatment of chronic diseases such as hypertension, diabetes, and hyperlipidemia.

Dr. Jetpuri earned her medical degree at the University of North Texas Health Science Center – Texas College of Osteopathic Medicine and completed a residency in family medicine at UT Southwestern Medical Center. She also earned a Master of Business Administration from the University of Texas at Dallas and a Certificate in Public Health from the University of Texas Health Science Center at Houston.

Certified by the American Board of Family Medicine, Dr. Jetpuri joined the UT Southwestern faculty in 2013. She practices inpatient medicine at Parkland Hospital and maintains a private practice at UT Southwestern’s Family Medicine Clinic. In addition, Dr. Jetpuri serves as Director of Medical Student Education for Family Medicine, as Co-Director of the Family Medicine Procedures Enrichment Elective for medical students, and as curriculum leader of Pediatrics and Culinary Medicine for the Family Medicine Residency at UT Southwestern.

Dr. Jetpuri recently completed an Integrative Medicine Certification through the University of Arizona and has started incorporating this healing-oriented specialty into her practice. In 2019 and 2020, Dr. Jetpuri was named a Texas Monthly Super Doctor Rising Star. She was also recognized as a D Magazine Best Doctor in 2018, 2021, and 2022.

Jennifer Kohler, Ph.D.

Dr. Kohler is Professor of Biochemistry at UTSW. She completed her undergraduate degree in Chemistry at Bryn Mawr College. Her Ph.D. studies, focused on the kinetics of protein-DNA interactions, were conducted in the laboratory of Prof. Alanna Schepartz, in the Chemistry Department at Yale University and she was an American Cancer Society postdoctoral fellow with Prof. Carolyn Bertozzi at the University of California, Berkeley.

Research in the Kohler Lab focuses on understanding the roles of glycoconjugates in a variety of biological systems. In 2012, the National Academy of Sciences published an expert report titled “Transforming Glycoscience: A Roadmap for the Future.” The central theme of this report is that “[a] new focus on glycoscience, a field that explores the structures and functions of sugars, promises great advances in areas as diverse as medicine, energy generation, and materials science…[h]owever, glycans have received little attention from the research community due to a lack of tools to probe their often complex structures and properties.” Dr. Kohler's research group at UT Southwestern develops new chemical biology methods that address challenges identified in this report.

They developed photocrosslinking sugar analogs of both sialic acid and GlcNAc that can be metabolically incorporated into cellular glycoconjugates and used to identify transient glycan-mediated interactions. Using the photocrosslinking sialic acid analog, they discovered novel and functionally significant fucosylated binding partners for cholera toxin and validated the role of non-ganglioside host receptors for cholera toxin in vivo. Using the photocrosslinking GlcNAc analog, they obtained evidence that the O-GlcNAc is intimately associated with nucleoporin-karyopherin recognition events that occur during nuclear transport. The lab shares its photocrosslinking reagents with research groups worldwide who are interesting in biological phenomena where glycosylation plays a critical role. They have also interfaced chemoselective glycan modification reactions with proteomics methods to develop a method to discover the glycoprotein substrates of sialidases. Ongoing research employs these and other glycobiology tools to understand the roles of glycosylation in intestinal epithelial tissue.

Karuna Raj, M.D.

Dr. Raj is an Associate Professor of Radiology at UT Southwestern Medical Center and a member of its Neuroradiology Division. She serves as Program Director of the Diagnostic Radiology Residency.

Dr. Raj holds a bachelor's degree with a double major in biochemistry/cell biology and psychology from Rice University in Houston. She earned her medical degree at Baylor College of Medicine in Houston, where she also completed radiology residency training. She then received advanced training through a fellowship program in neuroradiology at the University of Pennsylvania in Philadelphia. Dr. Raj is certified by the American Board of Radiology, with subspecialty certification in Neuroradiology.

Before joining the UT Southwestern faculty in 2017, Dr. Raj was an Assistant Professor and Associate Program Director of the neuroradiology fellowship and radiology residency training programs at the University of Texas Medical Branch in Galveston.

At UT Southwestern, Dr. Raj's commitment to medical education and training is demonstrated by her involvement in various education-related committees both within the Department of Radiology and across UTSW. In 2021, she was appointed Program Director of the Diagnostic Radiology Residency. In 2023 she became the Assistant Designated Institutional Official (DIO) at UTSW. Her educational interests include developing innovative ways of using technology to teach medical students, residents, and fellows. In 2017, Dr. Raj was awarded a grant from the Southwestern Academy of Teachers and Office of Medical Education to create online modules for teaching medical students about appropriate ordering of imaging studies.

Samira Syed, M.D.

Dr. Syed is an Associate Professor in the Department of Internal Medicine at UT Southwestern Medical Center and is a member of its Division of Hematology and Oncology.

Originally from Karachi, Pakistan, Dr. Syed received her medical degree from the Aga Khan University Medical College in Karachi. She then completed internal medicine residency training at Baylor College of Medicine in Houston, Texas. She received advanced training through a fellowship in hematology at Baylor College of Medicine and MD Anderson Cancer Center in Houston. She then completed a fellowship in medical oncology with an emphasis on the treatment of solid tumors and phase 1 clinical trials at UT Health Science Center San Antonio.

Dr. Syed's clinical interests include medical oncology and benign and malignant hematology. Certified by the American Board of Internal Medicine in hematology and medical oncology, she joined the UT Southwestern Faculty in 2012. She currently specializes in breast cancer and gastrointestinal malignancy.

At UT Southwestern, Dr. Syed is a member of the Simmons Cancer Center Data Safety Monitoring Committee and the Colleges Advisory Committee. She is also part of several research groups. Dr. Syed is currently the Co-Investigator on several research studies in medical oncology.