Dr. Zaidi's practice specializes in treating vascular disease with comprehensive treatment options including medical management, minimally invasive endovascular procedures including balloon angioplasty, atherectomy, stent procedures, and open surgical repair including bypass. His interests also include carotid disease, peripheral arterial disease, aortic aneurysms, and complex venous disease. Dr. Zaidi also provides comprehensive dialysis access care including fistula creation and maintenance.

Dr. Christine Shokrzadeh received her MD from the University of Texas Health Science Center at San Antonio and completed her residency in Vasculary Surgery at the University of Texas Medical Branch in Galveston. Clinically her interests relate to aortic disease, carotid artery disease, peripheral vascular disease, venous disease, hemodialysis access creation and management, endovascular and minimally invasive vascular surgery.

Dr. Konofaos is Professor of Plastic Surgery at the Division of Plastic Surgery at the University of Texas Medical Branch at Galveston. Dr. Konofaos received his MD degree in the Aristotle University of Thessaloniki in Thessaloniki Greece. Dr Konofaos obtained the Greek Plastic Surgery Boards in 2010 and the European Board of Plastic Reconstructive and Aesthetic Surgery (EBOPRAS) in 2014. He completed a 2-year fellowship training in brachial plexus, facial paralysis and peripheral nerve reconstruction at Eastern Virginia Medical School in Norfolk Virginia. Dr Konofaos also completed fellowship training in Microsurgery (1 year) and in Pediatric Plastic and Craniofacial Surgery (2 years) at the University of Tennessee Health Science Center.

Dr. Konofaos’ clinical practice focuses on peripheral nerve microsurgery (with emphasis on facial paralysis, brachial plexus, migraines and surgical treatment of pain) in pediatric plastic surgery and craniofacial surgery along with reconstructive microsurgery and facial aesthetics. Dr. Konofaos is a member of national and international Plastic Surgery associations and several Plastic Surgery committees related to Plastic Surgery research and education. Dr Konofaos serves on multiple editorial boards for plastic surgical journals, and he is actively involved in clinical research. Dr Konofaos has published over 130 peer-reviewed articles and co-edited several book chapters.

Dr. Hisham Marwan is an Associate Professor and division chief of Oral and Maxillofacial Surgery at the University of Texas Medical Branch (UTMB). He is a double board-certified surgeon in Oral and Maxillofacial Surgery and Oral, Head and Neck Oncology, and Microvascular Surgery.

Dr. Marwan completed his oral and maxillofacial surgeon training at Jackson Memorial Hospital/University of Miami in 2016. Dr. Marwan remained at Jackson Memorial Hospital from 2016-2018 as a surgical fellow in head and neck tumor and microvascular reconstruction surgery.

Dr. Marwan provides a state-of-the-art facial reconstructive surgery for oral cancer and jaw tumors. He is a pioneer in the Jaw in A Day procedure, where he uses microvascular surgery, nerve reconstruction, and jaw reconstruction to restore function and esthetics in a single surgery.

Dr. Marwan's practice involves the surgical management of obstructive sleep apnea. He is the first surgeon to implant the hypoglossal nerve stimulator (INSPIRE) at UTMB. He works closely with the pulmonology and sleep medicine team to provide an integrated approach for patients who suffer from obstructive sleep apnea.

Dr. Marwan is a fellow of several national and international scientific societies, including the American College of Surgeons and the American College of Oral and Maxillofacial Surgery. His areas of research interest include oral, head, and neck cancer, facial reconstruction, salivary gland tumors, obstructive sleep apnea, and craniomaxillofacial trauma.

Dr. Anthony D’Andrea is an Assistant Professor in the Section of Colon and Rectal Surgery, Department of Surgery, at the University of Texas Medical Branch (UTMB) in Galveston, Texas. He grew up in Houston, and received a Bachelor in Business Administration at Baylor University in Waco, Texas. He then went on to the University of Miami Miller School of Medicine where he graduated with a dual Doctor of Medicine (MD) and Master of Public Health (MPH). As a medical student he was inducted into the Alpha Omega Alpha National Medical Honor Society. He completed residency training in surgery at the Mount Sinai Hospital in New York City and fellowship training in colon and rectal surgery at the Cleveland Clinic in Weston, Florida.

Dr. D’Andrea’s training in colorectal surgery is longstanding. Prior to medical school, he worked as a clinical research associate at the Lankenau Medical Center in Wynnewood, Pennsylvania, under the guidance of Dr. John Marks. His research focused on minimally invasive laparoscopic colorectal surgery featuring radical sphincter preservation for rectal cancer after neoadjuvant chemoradiation. During medical school at the University of Miami, Dr. D’Andrea’s public health work involved the study of colorectal cancer survivorship and improving patients’ quality of life after treatment. In general surgery residency at the Mount Sinai Hospital, he spent a dedicated year of research under the mentorship of Dr. Patricia Sylla where he focused on minimally invasive laparoscopy, robotic surgery, and transanal endoscopic surgery for rectal cancer, as well as Crohn’s disease, and ulcerative colitis. Dr. D’Andrea’s training culminated at the Cleveland Clinic Florida where he had the opportunity to learn from longtime leaders in the field of colorectal surgery. Dr. D’Andrea is now privileged to return to Texas joining the faculty at UTMB where he can help serve the health and population of his home state with the highest quality of care.

Dr. Alexander Perez is a Professor of Surgery, Vice Chair of Quality for the Department of Surgery, Chief of the Division of Minimally Invasive and Foregut Surgery, the Surgical Director of the Sealy and Smith Laboratory for Surgical Training Assessment and Research at the University of Texas Medical Branch, and Adjunct Professor at the MD Anderson Cancer Center.

Dr. Perez was born in Bayonne, New Jersey. He completed his Research Fellowship and Internship in General Surgery at the Brigham and Women's Hospital, Harvard Medical School. He then did his Residency in General Surgery at Baystate Medical Center, Tufts University School of Medicine and his Fellowship in Endosurgery at Duke University Medical Center in Durham, North Carolina. Dr. Perez received his Medical Degree at the Bosque University Colombian Medical School in Bogota, Colombia.

Dr. Alexander Perez is board-certified in Surgery, fellowship-trained in Endosurgery and specializes in minimally invasive general and oncologic surgery - hernias, gallbladder, stomach, spleen, adrenal, and pancreas. He has authored over 30 publications in peer-reviewed journals and 10 book chapters in surgical textbooks. Dr. Perez has been honored with several awards for teaching and clinical work and is active in scientific organizations.

Dr. Uma R. Phatak is an Assistant Professor and Section Chief of Colon and Rectal Surgery in the Department of Surgery at the University of Texas Medical Branch (UTMB) in Galveston, Texas. She is board certified by the American Board of Surgery and the American Board of Colon and Rectal Surgery.

Dr. Phatak obtained her medical degree at New Jersey Medical School in Newark, New Jersey, in 2009. She went on to begin her general surgery resident training at the University of Texas Health Science Center (UTHSC) in Houston, Texas, in 2009.

After her second year of residency in 2011, Dr. Phatak was accepted to be a clinical research fellow in the Center for Surgical Trials and Evidence-Based Practice at UTHSC. Upon completing her fellowship in 2013, she earned her Master of Science in Clinical Research from UTHSC. She then continued her general surgery resident training at UTHSC, which she completed in 2016. She did a fellowship in Colon and Rectal Surgery at the University of Massachusetts in Worcester, Massachusetts, from 2016-2017.

In 2017, Dr. Phatak became an Assistant Professor in Colon and Rectal Surgery at Boston University Medical Center in Boston, Massachusetts. A year later, she became the Clerkship Site Director for MS3 Colorectal Surgery Rotation where she taught medical students.

Dr. Phatak joined UTMB in 2020. She is a member of several national scientific societies in surgery, has authored over 15 peer-reviewed articles in scientific journals and three book chapters, and is a journal reviewer for three scientific journals.

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Dr. J. Patrick Walker is a Professor in the MIS/Foregut Surgery Division in the Department of Surgery at the University of Texas Medical Branch, Galveston, Texas. Dr. Walker holds the James C. Thompson, MD, Distinguished Chair in Surgery, is Vice Chair for Surgical Operations and is Surgical Director of Perioperative Services.

He completed his internship and residency at the University of Texas Medical Branch where he became Chief Resident. He earned his Bachelor of Science in Biology and his Bachelor of Arts in Chemistry at Southern Methodist University in Dallas, Texas. Dr. Walker earned his MD at the University of Texas Medical Branch.

Dr. Walker is a member of the Southern Surgical Association, the Texas Surgical Society, the Texas Medical Association, and the American College of Surgeons. He is a past Director of the American Board of Surgery and a current Governor of the American College of Surgeons. He has been honored with the Ashbel Smith Distinguished Alumni Award at the University of Texas Medical Branch and the Arthur Ellenberger Award from the American College of Surgeons.

Dr. Walker's special interests include surgical education, rural/community surgery, endoscopy, acute care surgery, evaluation of abdominal complaints, gall bladder disease, hernias, colorectal surgery and complex surgical problems.

Mr. Davis, a Southeast Houston native, graduated from Baylor University in Waco, Texas with a Bachelor’s degree in Medical Humanities. He returned to his hometown of Deer Park and taught high school Biology and Anatomy before continuing his medical education. Reagan then obtained his Master’s degree in Physician Assistant Studies at the University of Texas Medical Branch in Galveston in 2018, where he served as class Vice President. Mr. Davis began his medical career as a PA here at UTMB and sees both adult and pediatric patients for General ENT disorders, with a specialty interest in head and neck cancers and myofascial pain. He remains passionate about education and enjoys teaching rotating clinical students as well as providing lectures to didactic students. During his free time, Mr. Davis enjoys cooking, reading, traveling, and going on walks with his wife and newborn daughter, and their dog, Oliver.