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Faculty

Leadership Team

David E. Stein, MD, MHCM, FACS, FASCRS

Dr. Stein serves as the Regional Chief of Surgery for MedStar Health’s Baltimore Region and the Chair of Surgery at MedStar Franklin Square Medical Center.  He oversees surgical quality, safety, outcomes and market leadership initiatives at each of the four MedStar Health hospitals located in the Baltimore Region. At Franklin Square he is focused on the development and implementation of an innovative, outcomes based optimized surgical services program to benefit patients undergoing general, minimally invasive, and robotic procedures in the hospital’s state-of-the-art, 82,000 square-foot Surgical Pavilion.

He joined MedStar after serving as Professor and Alma Dea Morani Chair of Surgery at Drexel University College of Medicine. In addition, was the Chief Operating Officer for the Drexel University Physicians Practice Plan as well as an Associate Dean for Clinical operations. Dr. Stein founded Drexel’s Mini-Medical School, comprised of numerous unique and interactive educational programs that allowed the public to learn how healthcare is delivered. Dr. Stein still serves as an Executive in Residence at Drexel’s Lebow College of Business where he is the lead faculty for the Physician Leadership and Business Acumen Program – a 10 module course that teaches leadership and business skills to emerging physician leaders. His clinical focus includes inflammatory bowel disease and colorectal cancer as well as benign anorectal disorders.

He received his medical degree from Downstate Medical College in Brooklyn, New York and completed his general surgery training at Thomas Jefferson University Hospital in Philadelphia. He went on to do his fellowship in Colon and Rectal Surgery at the Cleveland Clinic in Cleveland, Ohio. He also received his Master’s Degree in Healthcare Management from Harvard’s TH Chan School of Public Health.

Over the past fifty years he has developed expertise in the concepts of optimism and resilience, predominantly due to fact that he is a long suffering diehard New York Jets fan.

Margaret Arnold, MD, FACS
MedStar Franklin Square Medical Center
General Surgery Residency Program Director
Surgical Attending, Vascular Surgery

Maggie Arnold, MD, FACS, a vascular surgeon, is the Program Director for the General Surgery Residency Program. Her mission is for the program to be the premier clinical training program in the region.

Previously, she served as the Associate Program Director at Johns Hopkins University. During her tenure at Johns Hopkins, she worked to develop a Resident Wellness Program and feels strongly about the integration of wellness into resident education.

She received her medical degree from the University of Texas Health Science Center in San Antonio and completed her general surgery residency at the University of North Carolina at Chapel Hill. She went on to do a vascular fellowship at the Mount Sinai School of Medicine in New York City. Her passion for resident education has led her to pursue a Master’s in Health Professions Education through the University of Illinois Chicago.

Dr. Arnold is an avid runner. When she isn’t pounding the pavement, she can be found spending time with her husband, R.T., and their two boys building Lego castles in the basement.

Christian Jones, MD, FACS
Chief of Surgery
MedStar Good Samaritan Hospital and MedStar Union Memorial Hospital

Christian Jones, MD, FACS, is an acute care surgeon, certified by the American Board of Surgery in Surgery and Surgical Critical Care, treating acutely ill and injured patients who benefit from the care of a compassionate, knowledgeable, and capable surgeon. With a career starting in academic mathematics, training in and practicing general surgery, trauma surgery, and critical care surgery at university-based academic medical centers, and working at rural and suburban community hospitals, Dr. Jones’s broad experience in and out of surgery informs his team-based multidisciplinary approach to patient care, systems improvement, and medical education.

Vinay Gupta, MD, FACS
Director of Surgical Oncology
MedStar Franklin Square Medical Center

After receiving his Medical Degree from University of Maryland, Dr. Gupta completed his general surgery residency at Medical College of Georgia and his fellowship training in Surgical Oncology at University of Chicago. His practice involves general surgery, surgical oncology, and endocrine surgery. He is a committee member of the Commission on Cancer – Maryland Chapter.

David Lisle, MD
Surgical Attending, Colorectal Surgeon
MedStar Franklin Square Medical Center

Dr. Lisle is a colorectal surgeon with specialized interest in minimally invasive surgical techniques. He earned his medical degree at Georgetown University School of Medicine and then went on to complete a general surgery residency program at Columbia University—New York Presbyterian Hospital, where he served as Chief Surgery Resident for Robotic Surgery. Prior to joining MedStar Franklin Square’s team, he pursued a colorectal surgery fellowship at the Cleveland Clinic Florida, learning novel, advanced laparoscopic techniques. Dr. Lisle has served in numerous leadership and teaching roles throughout his training experience, and has also contributed to several medical research projects focused protocols and best practices relative to complex colorectal surgery cases.

Nicole Chamount, MD, FACS
Vice Chair of Quality and Patient Safety
MedStar Baltimore Surgery

Nicole Chaumont, MD, FACS, is a Colon and Rectal Surgeon at MedStar Franklin Square Medical Center, MedStar Good Samaritan Hospital, and MedStar Health Bel Air Medical Campus. Clinically, she is focused on the overall surgical care of patients with colon and rectal issues but is specifically interested in minimally invasive approaches in the management of Inflammatory Bowel Disease (including Crohn’s disease and ulcerative colitis) and colon and rectal cancers. Her use of laparoscopic and robotic surgery techniques benefit the patient during and post-surgery.

Dr. Chaumont is a rising leader in surgical quality improvement and patient safety. She joins the MedStar Health System in their efforts in this area as the Regional Vice Chair of Quality, Safety, and Outcomes.

Dr. Chaumont earned her undergraduate degree from Duke University before obtaining her medical degree from the University of Miami Miller School of Medicine. She then completed a surgical residency in General Surgery, followed by a year of specialty training in colon and rectal surgery at the University of North Carolina in Chapel Hill.

Leslie Rogers, EdD

Dr. Leslie Rogers is an educational consultant specializing in teaching, learning, and curriculum. With over twenty years of teaching and administrative experience in a range of academic settings and expertise in service learning, Dr. Rogers currently works on curricular and programmatic initiatives, promotes and supports active teaching and learning and resident and faculty wellness, and provides educational counseling. Dr. Rogers is also a past winner of the University of Pennsylvania Educator of the Year Award.   

Monica L. Wang, ScD, MS

Dr. Wang is the Associate Director of Narrative at the BU Center for Antiracist Research, an Associate Professor of Community Health Sciences at the Boston University School of Public Health, and an Adjunct Associate Professor of Health Policy and Management at the Harvard T.H. Chan School of Public Health. Dr. Wang is a nationally-recognized leading health equity researcher in obesity and chronic disease prevention. She directs community-engaged research to target racial inequities in health and pursues cross-sector collaborations to promote health and health equity through public health interventions and policies. Dr. Wang has generated over $4 million in federal and foundation funding for her program of research and published over 50 peer-reviewed manuscripts and over a dozen policy and public engagement documents. As an expert in case-based teaching and digital learning design, Dr. Wang has taught graduate courses on the social determinants of health at Harvard and Boston University since 2010. Dr. Wang has received numerous awards for her research, teaching, and service, including the Society of Behavioral Medicine Early Investigator Award and the Greater Boston Chamber of Commerce Ten Outstanding Young Leaders Award. At the national level, she advances science communication initiatives through her leadership role in the Society of Behavioral Medicine.

Dr. Wang serves as the co-Director for the MedStar Baltimore Surgery Social Determinants of Health longitudinal curriculum.

Surgical Faculty

Alain Abdo, MD 
Surgical Attending, General Surgery, and Minimally Invasive Surgery
MedStar Franklin Square Medical Center

Dr. Abdo earned his medical degree at Lebanese University and then relocated to the Baltimore area, where he pursued training and a bariatric/minimally invasive fellowship program at Saint Agnes Hospital. During that time, he pursued clinical rotations at The Johns Hopkins Hospital, the University of Maryland Medical Center, and MedStar Franklin Square, building his knowledge and expertise in the areas of general surgery, pediatrics, trauma, transplant surgery and burn care. Additionally, Dr. Abdo has demonstrated a solid commitment to his field through conducting, publishing and presenting medical research. Dr. Abdo is a member of the American College of Surgeons. He is fluent in English, French and Arabic.

Jason Chin, MDJason Chin, MD
Surgical Attending, Vascular Surgery
MedStar Union Memorial Hospital /MedStar Good Samaritan Hospital

Jason Chin, MD is a graduate of the integrated vascular surgery residency at Yale-New Haven Hospital. He currently practices with MedStar Heart & Vascular Institute at MedStar Union Memorial Hospital and MedStar Harbor Hospital.

Throughout his training, Dr. Chin cared for the full array of vascular disease including complex open and endovacsular aortic aneurysm repair, endovascular limb salvage, redo bypasses, graft infections, and dialysis access creation and revision. He takes a special interest in advanced endovascular techniques for limb salvage, carotid artery disease, and aneurysm repair. Beyond arterial disease, he is well-versed in the surgical and minimally-invasive treatment of venous thrombosis and insufficiency for varicose veins, swelling, and wounds.

Initially a student of biomedical engineering, Dr. Chin maintains a keen interest in surgical device development. His work on vascular access devices has led to multiple pending patents, grant funding, and his co-founding of a medical device company to further advance these pursuits and bring them to market. His academic research into vascular surgery outcomes has resulted in the publication of multiple peer reviewed journal articles, book chapters, and both regional and national presentations.

Dr. Chin understands that each patient is unique and makes it a priority to learn as much as he can about their individual lifestyle, goals, and what is important to them. He chose vascular surgery for the wide range of medical, surgical, and minimally-invasive options to treat individual vascular diseases. Taking these together with his experience in innovation, he aims to provide the most technically advanced and individualized treatment possible for each patient.

Jason Crowner, MD, FACS
Vascular Surgeon
MedStar Baltimore Vascular Surgery

Jason Crowner, MD, FACS, is an experienced board-certified vascular surgeon at MedStar Heart & Vascular Institute at MedStar Union Memorial Hospital and MedStar Good Samaritan Hospital.

He provides treatment for the full spectrum of vascular pathology, with a special focus on severe peripheral artery disease.

Dr. Crowner uses both endovascular and open approaches in his practice. In addition to surgical treatments, he encourages behavioral modifications and uses medical therapies, based on the unique anatomy and lifestyle of each patient.

Dr. Crowner believes that treatment decisions are best made by fully considering how they will impact the patient before, during, and long after their procedure.

Dr. Crowner received his medical degree from Southern Illinois Univ. School of Medicine. He went on to complete the integrated Vascular Surgery Residency Program at University of North Carolina in Chapel Hill. He chose vascular surgery because he enjoys developing relationships with his patients and becoming an enduring partner in their care.

Gabriel Del Corral, MDGabriel Del Corral, MD
Surgical Attending, Plastic Surgery
MedStar Franklin Square Medical Center

Gabriel A. Del Corral, MD, a fellowship-trained plastic and reconstructive surgeon joins the MedStar Plastic Reconstructive Surgery team at MedStar Franklin Square Medical Center. Board certified by the American Board of Surgery and the American Board of Plastic Surgery, Dr. Del Corral has a specific interest in working with breast cancer patients.

Dr. Del Corral has extensive experience performing a wide variety of breast reconstruction procedures including the DIEP/TUG flap as well as several other flap techniques, the two-stage tissue expander/implant, and the one-stage direct to implant reconstruction. He is also highly skilled in treating patients with post-surgical lymphedema using the most advanced microsurgical techniques. This includes lymphatic surgery to treat lymphedema and breast cancer-related lymphedema.

He is a member of professional societies that include the American Society of Plastic Surgery, the American Society of Aesthetic Plastic Surgery, the American Society of Reconstructive Microsurgery, and the American Society of Lymphatic Surgery, among others. He has been named a “Top Doctor” by Baltimore Magazine for plastic surgery, cosmetic surgery, breast reconstruction and body contouring.

Maen Farha MD, FACS
Director of Breast Surgery
MedStar Union Memorial Hospital/MedStar Good Samaritan Hospital

Dr. Farha is a Breast Surgeon who specializes in non-cancerous and cancerous breast disease. He completed his medical school at American University of Beirut then joined Medstar Union Memorial Hospital General Surgery Residency Program. He has extensive experience in breast-conserving surgery and performing minimally invasive breast biopsies, including but not limited to stereotactic breast biopsy and ultrasound-guided biopsies. He has presented his work at nationally at multiple Breast Cancer forums.

Jeffery Ferris MD, FACS
Surgical Attending, General and Colorectal Surgery
MedStar Franklin Square Medical Center

Dr. Ferris graduated from University of Maryland School of Medicine and then completed his general surgery residency at the Washington Hospital Center.  Dr. Ferris then completed a fellowship in colorectal surgery. His practice includes gastrointestinal and hernia surgery as well as colorectal and endoscopic procedures.

Ziv Gamliel, MD, FACS
Chief of Thoracic Surgery
Angelos Center for Lung Disease at MedStar Franklin Square Medical Center

Ziv Gamliel, MD, FACS,  is chief of Thoracic Surgery at The Angelos Center for Lung Diseases at MedStar Franklin Square Medical Center and MedStar Harbor Hospital. Dr. Gamliel attended the University of Toronto Faculty of Medicine, where he received his medical degree, and completed his internship in Surgery and residency in General Surgery. Dr. Gamliel then completed two more fellowships, one in Lung Transplantation and the other in Thoracic Surgery at University of Toronto. He has also completed a fellowship in Surgical Critical Care at Harvard Medical School.

Board certified in Surgery, Dr. Gamliel specializes in non-cardiac surgery of the chest, treating conditions that include lung cancer, bullous lung disease, esophageal cancer, benign esophageal disorders, mediastinal tumors and tumors of the chest wall. He has extensive experience performing minimally invasive procedures.

Dr. Gamliel is a member of the Society of Thoracic Surgeons, the American College of Surgeons and the Royal College of Physicians and Surgeons of Canada. When he is not practicing medicine, he enjoys spending time with his family.

Suzanne Siefert Kool, MD
Surgical Attending, Vascular Surgery
MedStar Union Memorial Hospital /MedStar Good Samaritan Hospital

Suzanne Kool, MD, is a vascular surgeon at MedStar Heart and Vascular Institute with office hours at MedStar Union Memorial Hospital and MedStar Good Samaritan Hospital. Dr. Kool specializes in the diagnosis and treatment of arterial and venous disease. This includes aortic aneurysms and dissections, carotid artery disease, peripheral vascular disease, limb salvage, and venous insufficiency. As a vascular surgeon, she uses medical treatments, endovascular or minimally invasive techniques, as well as open surgical techniques to manage and treat diseases of the vascular system Dr. Kool received her medical degree from the University of Virginia Medical School. She then completed a general surgery residency at the University of Maryland Medical Center, where she also completed an NIH-funded research fellowship in their Center for Vascular and Inflammatory Disease. Finally, she did a fellowship in vascular surgery at Ohio State University Wexner Medical Center before joining MedStar. Dr. Kool has published and presented nationally on vascular diseases.

John Lazar, MD
Director of Thoracic Robot Surgery
MedStar Washington Hospital Center

John F. Lazar, MD, is a board-certified general thoracic surgeon, Director of Thoracic Robotics at Medstar Washington Hospital Center, and an assistant professor of thoracic surgery at Georgetown University in Washington, DC. He is a member of the Society of Thoracic Surgeons, the Society of Robotic Surgery, and serves on the executive board of both the Eastern Cardiothoracic Surgical Society and the American Lung Association.

As a general thoracic surgeon, Dr. Lazar specializes in the treatment of malignant and benign diseases of the lung, the esophagus, the mediastinum, the trachea, and the bony structures of the chest wall. Dr. Lazar and his team are one of the only teams in the world that robotically treat tracheobronchial malacia, a condition that causes difficulty breathing due to airway collapse. One of Dr. Lazar’s major clinical interests is building Medstar into a regional epicenter for robotic surgery,

Dr. Lazar received his medical degree from Saint George University School of Medicine and completed his general surgery training at UPMC/Pinnacle in Harrisburg, Pennsylvania. He went on to complete a two-year fellowship in thoracic surgery at the University of Rochester.

David Zachary Martin, MD
Surgical Attending, Plastic and Reconstructive Surgery
MedStar Good Samaritan Hospital

Dr. Martin is a plastic surgeon for MedStar Plastic and Reconstructive Surgery, practicing at MedStar Good Samaritan Hospital. Dr. Martin earned his medical degree at Georgetown University and completed a five-year residency at Washington University, St. Louis, Missouri. He has served in executive roles at MedStar Good Samaritan Hospital since 2006.

Dr. Martin currently serves as the President of Medical Staff, Medical Director of the Hyperbaric Medicine and Wound Healing Center (Healogics), Chief of the Department of Plastic and Reconstructive Surgery, and Attending Plastic Surgeon at MedStar Good Samaritan Hospital.

Dr. Martin also maintains his role as attending plastic surgeon at The Plastic and Reconstructive Surgery Institute in Baltimore, MD, where he treats a broad range of patients in facial, hand, trunk, and lower extremity reconstruction. Lower extremity surgery includes the ankles and feet, a sub-specialty in which Dr. Martin has particular expertise.

Michael Matsuura, MD
Surgical Attending, General Surgery
MedStar Franklin Square Medical Center

Dr. Matsuura comes to us from the University of Maryland VA Maryland Medical Center R. Adams Cowley Shock Trauma Center. He has actively served with the United States Air Force as a general surgeon and clinical assistant professor since 2009. In 2013, his surgical team was deployed to Ghazni, Afghnistan. He recently separated from the Air Force at the rank of Lt. Colonel.  Dr. Matsuura received his medical degree from the University of Iowa Carver College of Medicine in Iowa City, IA followed by two general surgery residencies: at the University of Hawaii in Honolulu, HI and at the New Jersey Medical School University of Medicine and Dentistry of New Jersey in Newark, NJ, where he also served as administrative chief resident. He has presented at multiple conferences and symposiums and his clinical expertise includes advanced laparoscopic techniques, splenectomy, herniorrhaphy, hepatobiliary, complex wound management and trauma.

Edward McCarron, MD, FACS
Surgical Attending, Surgical Oncology
MedStar Franklin Square Medical Center

Dr. McCarron obtained his medical degree from the University of Maryland School of Medicine and completed his surgical residency at Medstar Union Memorial Hospital. He then completed a fellowship in surgical oncology at the Roswell Park Cancer Institute in New York. His practice involves both surgical oncology and endocrine surgery.

David Nasrallah MD, FACS, FICS, CNSP
Surgical Attending
MedStar Union Memorial Hospital/MedStar Good Samaritan Hospital

Dr. Nasrallah completed his medical school at American University of Beirut and his Surgical Training at MedStar Union Memorial Hospital. He completed fellowships in Critical Care and Trauma as well as Sports Medicine at the University of Maryland R. Adams Cowley Shock Trauma Center. He specializes in the treatment of hernia, breast surgery, as well as a wide range of gastrointestinal procedures. Dr. Nasrallah has more than thirty years of experience in the surgical field.

Stephen Stanziale, MDStephen Stanziale, MD
Surgical Attending, Vascular Surgery
MedStar Franklin Square Medical Center

Stephen Stanziale, MD, is a fellowship-trained vascular surgeon who is board certified in both vascular surgery and general surgery. As part of MedStar Heart & Vascular Institute, he leads the vascular surgery service at MedStar Franklin Square Medical Center.

Dr. Stanziale specializes in minimally invasive endovascular therapies for carotid, renal, aortic aneurysm, lower extremity arterial and venous disorders and is skilled in traditional open surgery.

Dr. Stanziale chose vascular surgery because of the breadth of vascular diseases and the challenge of taking care of complex patients. He regards each patient with the highest priority and concern and treats every patient as he would want his family treated, while often forming life-long relationships with them. He respects patient choices and thoroughly discusses all options while balancing medical decision-making and surgical treatment.

He was a Howard Hughes Scholar at the National Institutes of Health and has published more than 25 peer reviewed medical research studies and he is a member of the Society for Vascular Surgery and a Fellow of the American College of Surgeons (FACS).

Sami Tannouri, MDSami Tannouri, MD
Surgical Attending, General Surgery/MIS
MedStar Good Samaritan Hospital

Dr. Sami Tannouri grew up in Baltimore, Maryland and is a graduate of the University of Maryland. He received his Master’s Degree from Georgetown University. He obtained his medical degree at Penn State Hershey College of Medicine in Hershey, Pennsylvania. His residency was at Thomas Jefferson University Hospital and he completed his fellowship at University of Maryland Medical Center in Minimally Invasive Surgery.

Dr. Tannouri is an active member of the American College of Surgeons along with The Society of American Gastrointestinal and Endoscopic Surgeons. He has received several awards for teaching through his journey of becoming a physician, his most recent award was 32nd Annual Goracci Award from The Department of Surgery at Thomas Jefferson University for excellence in teaching as a chief resident.

A few fun facts about Dr. Tannouri; he is fluent in French and Arabic and his past time is spent playing soccer and guitar. Dr. Tannouri has been evolving in healthcare since 2003 when his journey began and is now a great addition to MedStar Surgical Specialist Team.

Raghuveer Vallabhaneni, MD, FACS
Director of Vascular Surgery
MedStar Union Memorial Hospital /MedStar Good Samaritan Hospital

He is a fellowship-trained vascular surgeon who is board certified in both vascular surgery and general surgery. Most recently, Dr. Vallabhaneni served as an Assistant Professor of Surgery in the Division of Vascular Surgery at the University of North Carolina. Experienced in all forms of endovascular and open surgery, including minimally-invasive, as well as in the medical management of vascular issues, Dr. Vallabhaneni is able to offer his patients the full range of available diagnostic and treatment options. He also has specific expertise in treating complex aortic disease and has developed a national reputation in this field. He completed a research fellowship at the University of Pittsburgh Medical School and his clinical vascular surgery fellowship at Barnes-Jewish Hospital in St. Louis. He trained in general surgery at the University of Pittsburgh Medical Center. Dr. Vallabhaneni's research interests are focused on patient outcomes related to the latest advances in vascular surgery. He has been the principal investigator on numerous clinical trials related to various treatment modalities. Dr. Vallabhaneni is published widely, including book chapters and peer-reviewed articles, and has been an invited speaker at both regional and national vascular surgery conferences.

Jeremy Weiner MD, FACS
Surgical Attending
MedStar Union Memorial Hospital/MedStar Good Samaritan Hospital

Dr. Weiner received his medical degree from the University Of Maryland School Of Medicine. He then completed his general surgical residency at Medstar Union Memorial Hospital. Dr. Weiner performs the full range of general surgery, including disease of the breast, colorectal disease, hernia repair, gallbladder surgery, and laparoscopic surgery. He has many years of experience with resident training and education.

Christopher Jamyn You, MD
Surgical Attending, Bariatric & Robotic Surgery
MedStar Franklin Square Medical Center

Christopher You, MD, is a board-certified bariatric surgeon in Baltimore, MD. He obtained his medical degree from Georgia Regents University. He completed his residency at MedStar Union Memorial Hospital. He completed fellowships at Northwest Hospital Center and Sinai Hospital. Dr. You is co-medical director of the comprehensive Robotic Surgery Program at MedStar Franklin Square Medical Center in Baltimore, MD. He is board certified by the American Board of Surgery.