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Contact Information

WCHOB Outpatient Clinics
Clinic Appointments - 2nd floor
140 Hodge Avenue
Buffalo, NY 14222

Orthopedics

Pediatric Surgery
Meet the Team

Surgeon-in-Chief and Program Director
Carroll M. Harmon, MD, PhD

Attending Surgeons
Kathryn D. Bass, MD, Director of Trauma
David H. Rothstein, MD, MS, Leader of Pediatric Surgery Quality and Patient Safety
Anthony M. Savo, MD, Attending Surgeon
Kaveh Vali, MD, Attending Surgeon

Nurse Practitioners and Physician Assistants
Jena Mamon, PA
Lynn Melisz, CPNP
Michele Boyle, PA
Theresa McDonough, FNP
Kathleen Marshall, RN

Office Manager/Program Administrator
Sarah J. Hoffman


Carroll McWilliams Harmon, MD, PhDIn January 2014, Carroll McWilliams (Mac) Harmon, MD, PhD, was appointed Surgeon-in-Chief at Women & Children’s Hospital of Buffalo (WCHOB),  Professor of Surgery at the University at Buffalo, The State University of New York and  Program Director or the Pediatric Surgery Fellowship Program at Women & Children’s Hospital of Buffalo. 

Dr. Harmon’s most  recent role was Professor and Director of pediatric surgical research at the University of Alabama at Birmingham (UAB) School of Medicine, as well as Surgical Director of the Children’s Center for Weight Management and the Georgeson Center for Advanced Intestinal Rehab. He is also a scientist at UAB’s Center for Surgical Research and the Clinical Nutrition Research Center and will continue his research at the University at Buffalo, School of Medicine and Biomedical Sciences and the new Clinical and Translational Research Center located on the Buffalo Niagara Medical Campus.

Dr. Harmon has an international reputation for his groundbreaking work in pediatric minimally-invasive surgery and surgical intervention in childhood obesity. He has been one of the principal investigators on a National Institutes of Health grant that runs until 2018 titled “Teen Longitudinal Assessment of Bariatric Surgery.” The purpose of the study is to assess the short and longer-term safety and efficacy of bariatric surgery in adolescents compared to adults.

Before coming to the University of Alabama, Dr. Harmon was an instructor of surgery at the University of Pennsylvania and assistant professor of surgery at the University of Michigan Medical School.

He earned his bachelor’s degree at the University of Alabama at Tuscaloosa, and his MD at the Vanderbilt University School of Medicine. He also earned a PhD in molecular physiology and biophysics at Vanderbilt. Dr. Harmon did surgical residencies at the Vanderbilt University Medical Center and a pediatric surgery residency and fellowship at Children’s Hospital of Philadelphia.

Dr. Harmon currently chairs the Childhood Obesity and the Industrial Relations Committee,  of the American Pediatric Surgical Association and serves on the Humanitarian Task Force of the Society of American Gastrointestinal and Endoscopic Surgeons.

A past president of the International Pediatric Endosurgery Group, Dr. Harmon is author of approximately 100 peer-reviewed scientific publications. He also serves on the editorial boards of the Journal of Laparoendoscopic and Advanced Surgical Techniques and Pediatric Surgical International.


Kathryn D. Bass, MDKathryn D. Bass, MD is Associate Professor of Surgery and Pediatrics, Division of Pediatric Surgery at the University at Buffalo, The State University of New York. Dr.  Bass is also an attending pediatric surgeon and Director of Trauma at Women and Children’s Hospital of Buffalo, Kaleida Health.

Dr. Bass completed her undergraduate education and obtained her M.D. at Northwestern University in Chicago, Illinois.  Her general surgery training was done at Tufts University in Boston.  Her pediatric surgery training was done at The University of Colorado, The Children’s Hospital in Denver, Colorado.  Dr. Bass is board certified in General and Pediatric Surgery.  Her clinical interests include teaching, research, minimally invasive surgery, morbid obesity and pediatric trauma.  Dr. Bass is a member of the American Academy of Pediatrics, American Pediatric Surgical Association, American Association for the Surgery of Trauma, American College of Surgeons, Association of Women Surgeons, International Pediatric Endoscopy Group, American Society for Metabolic and Bariatric Surgery and many others.  Prior to Dr. Bass’ appointment, she was an Associate Professor of Surgery at the University of North Texas Health Science Center and an Adjunct Assistant Clinical Professor at University of Texas Arlington.


David H. Rothstein, MD, MSDavid H. Rothstein, MD, MS is an attending pediatric surgeon at the Women and Children’s Hospital of Buffalo, and Associate Professor of Surgery at the University at Buffalo, SUNY. He is the leader of Pediatric Surgery Quality and Patient Safety at Women & Children’s Hospital of Buffalo.

His interests include outcomes research, the study of transitions between pediatric and adult surgery, resident education and minimally invasive surgery. He is actively involved in global health, working to improve the delivery of surgical care in resource-poor and conflict areas.

Dr. Rothstein is a fellow of the American Academy of Pediatrics and the American College of Surgeons. He also belongs to the American Pediatric Surgical Association, the International Surgical Society, the Society of American Gastrointestinal Endoscopic Surgeons, the Association for Academic Surgery and the Children’s Oncology Group.

Before coming to Buffalo, Dr. Rothstein was an Assistant Professor of Surgery at the Northwestern University Feinberg School of Medicine, in Chicago, for six years. He obtained a B.S. in Biology at the Massachusetts Institute of Technology before completing his medical degree at University of Massachusetts Medical School. His general surgery training was done at Maine Medical Center, in Portland, Maine, and his pediatric surgery training was done at Schneider Children’s Hospital, in New Hyde Park, New York. Dr. Rothstein also completed a Pediatric Surgical Critical Care fellowship at Boston Children’s Hospital. He is board certified in General, Pediatric, and Critical Care Surgery by the American Board of Surgery. He also received a Masters in Health Services Research at Northwestern University.


Kaveh Vali, MD, FACSKaveh Vali, MD, FACS is an attending surgeon at Women & Children's Hospital of Buffalo and Assistant Professor of Surgery at the University at Buffalo School, The State University of New York. Dr. Vali earned his medical degree from McGill University, Montreal, QC. He completed his surgical residency at the University of California, San Francisco and his pediatric surgery fellowship at CHU Sainte-Justine Hospital, Montreal, QC.

In October 2012 Dr. Vali was appointed Interim Program Director of the Pediatric Surgery Fellowship Program and in December 2012 he was appointed Medical Director, Department of Pediatric Surgery at Women & Children’s Hospital of Buffalo, Kaleida Health.

Dr. Vali’s interest include minimally invasive surgery, pediatric surgical oncology and surgical education. He is a fellow of the American College of Surgeons a member of the American Pediatric Surgery Directors Committee.