Bowel Perforation Expert Witnesses

Palo Alto , California

Gastroenterology, Legal Medicine - surgical timing, Crohn's Disease, Bowel Perforation, Ischemic colitis, Ulcerative Colitis, Causation, Standard of Care, Biologics Management, Toxic Megacolon, Management of Refractory IBD, Inflammatory Bowel Disease, Colonoscopy, Intestinal Ultrasonography, Complications of Biological Therapies, IBD, EGD, complications

Dr. Barber is a board‑certified academic gastroenterologist trained at Harvard Medical School and Stanford University, where he is now faculty. He oversees a high‑volume procedural practice (>400 colonoscopies annually) and manages more than 400 tertiary‑level IBD patients requiring advanced biologic and small‑molecule therapies, endoscopic intervention, and intestinal ultrasonography. He developed and directs the Stanford IBD Inpatient Consult Service and serves on the GI Clinical Competency Committee and GI Quality Council, where he helps establish and monitor clinical and procedural safety standards. His expertise includes: • Procedural Standards: Recognition and management of perforations, post‑procedural hemorrhage, and sedation‑related events • IBD Management: Biologic initiation/monitoring (anti‑TNF, IL‑12/23, JAK inhibitors, S1P modulators, integrin inhibitors), refractory disease, and surgical timing • Diagnostic Accuracy: Delayed diagnosis in colorectal cancer, IBD, isch...

GAINESVILLE, Florida

Pathology - Gastrointestinal, liver, pancreas, cancer, tumor, inflammatory diseases, benign, malignant, Inflammatory Bowel Disease, Colitis Patterns, Transplant Pathology, Colorectal Cancer, Pancreatic Pathology, Hepatocellular Carcinoma, Barrett Esophagus and Dysplasia, GI Biopsy Interpretation, Bowel Perforation

Double fellowship-trained expert in the fields of Gastrointestinal Pathology and General Surgical Pathology. Certified by the American Board of Pathology in both Anatomical and Clinical Pathology, Dr. Assarzadegan has extensive subspecialty training in Gastrointestinal, Liver, and Pancreas Pathology from the prestigious Johns Hopkins University. Currently serving as a Clinical Assistant Professor at the University of Florida, Dr. Assarzadegan focuses primarily on Gastrointestinal, Liver, and Pancreas Pathology. With a distinguished expertise in diverse areas, Dr. Assarzadegan excels in diagnosing inflammatory diseases of the gastrointestinal tract, including gastritis, celiac disease, colitides, inflammatory bowel disease (Crohn's and ulcerative colitis), vasculitides, Barrett esophagus and dysplasia, as well as benign and malignant tumors of the upper and lower gastrointestinal tract (esophagus, stomach), liver, gallbladder, biliary tract, and pancreas, encompassing various carci...

Omaha, Nebraska

General Surgery, Trauma Surgery - Trauma Surgery, Trauma Surgeon, Surgical Critical Care, Acute Care Surgery, Emergency Surgery, Critical Care Medicine, ICU, Sepsis, Septic Shock, Abdominal Surgery, Appendectomy, Cholecystectomy, Robotic Surgery, Bowel Perforation, Hernia, Hemorrhage, Gunshot Wound, Blunt Trauma, Motor Vehicle Accident, Hernia Mesh

Dr. Keely Buesing is a nationally recognized general, trauma and critical care surgeon with extensive experience in the care of critically ill and injured patients. She is double board-certified in General Surgery and Surgical Critical Care by the American Board of Surgery. Dr. Buesing is a Professor of Surgery at the University of Nebraska Medical Center (UNMC) and practices full-time at a Level I academic trauma center, where she provides expert care for critically ill and injured patients, including those with blunt and penetrating trauma, surgical emergencies, and complex abdominal conditions. Dr. Buesing brings an exceptional combination of clinical expertise, academic leadership, and legal insight to her role as an expert witness. Her areas of specialization include trauma surgery, emergency general surgery, and surgical critical care, with particular focus on complications related to cholecystectomy, appendectomy, bowel obstruction and perforation, hernia repair (including m...

New York, New York

Gastroenterology, Hepatology - Colonoscopy complications, Endoscopy complications, Bowel perforation, GI bleeding, Missed polyps, Pancreatitis, ERCP complications, Bile duct injury, Crohn’s misdiagnosis, Ulcerative colitis, Diverticulitis, Esophageal perforation, GERD, Liver disease, Hepatitis, Celiac disease, GI cancer, Colorectal surgery, Standard of care

Board-Certified Gastroenterologist and Hepatologist practicing at Manhattan Gastroenterology, consistently recognized with 5-star patient reviews for delivering high-quality, compassionate care. Affiliated with Cornell, with ongoing involvement in academic and clinical activities. Experienced in medical record review, case analysis, and expert testimony. Have served as an expert witness for both plaintiffs and defendants, offering balanced, objective opinions on standards of care, delayed or missed diagnosis, procedural complications, and informed consent. Completed medical training at SUNY Downstate College of Medicine, followed by an Internal Medicine Residency and Gastroenterology & Hepatology Fellowship at Stony Brook University Hospital. Board-Certified in Gastroenterology (2021) and Internal Medicine (2018). Educational background includes a Master of Science in Chronic Disease Epidemiology from Yale University and a Bachelor’s degree from Columbia University, providing a s...

Sneads Ferry, North Carolina

Neonatal - Perinatal Medicine, Nurse Practitioner - Newborn, HIE, brain inury, Birth Injury, bowel perforation, central line, Prematurity, low birth weight, umbilical catheter, PICC, sepsis, hypoglycemia, bilirubin, resuscitation, chest tube, intubation, arterial line, body cooling, home birth, respiratory failure

39 years of experience in the field of Neonatology/Newborn Care of which the past 29 years as a Board-Certified Neonatal Nurse Practitioner, primarily functioning in the maximum level of Neonatal Intensive Care Units (Level IV). Actively working in NICU. Areas of expertise include EPI (Extremely Premature Infant), brain injury (therapeutic hypothermia/total body cooling), infants with respiratory failure, ECMO (heart/lung bypass), congenital heart defects, high risk neonatal deliveries, meconium aspiration of the newborn, care of medically complicated infants (infants with tracheostomies and feeding tubes), pediatric cardio-thoracic surgical infants, Persistent Pulmonary Hypertension of the Newborn (PPHN), routine newborn care and neonatal resuscitation. Services provided: *Review medical records and provide expert witness verbal or written report *Identify standards of care and deviations from those standards *Analysis of opposition expert's depositions *Aid in the identificati...

Ogden, Utah

General Surgery, Trauma Surgery - Breast Cancer, Colorectal Cancer, Hernia complications, Wrong site surgery, Retained foreign body, Accidents, Gun shootings/Stabbings, Ski injuries, Blood loss, Delay in diagnosis, Laparoscopic complications, Appendicitis, Gallbladder disease, Bowel perforation, Ureteral injury, Central line complications, Pneumothorax, Endoscopy

Spanish Fluency. Army Veteran. MD from New York University School of Medicine. Residency in General Surgery from Tulane University School of Medicine. Green Belt Certification in Quality and Continuous Process Improvement. Board certified and recertified twice, in General Surgery. Fellow of the American College of Surgeons. State licenses in Utah, Wyoming, and Idaho. Advanced Trauma Life Support certified. Head of hospital Blood Transfusion Committee.