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Inflammatory Bowel Disease Expert Witnesses

Inflammatory bowel disease expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on inflammatory bowel disease. The inflammatory bowel disease expert witness listings on this page are typically from fields/areas of expertise such as: Colon & Rectal Surgery, Gastroenterology, General Surgery, Hepatology, Internal Medicine, Legal Medicine, Obesity, Pathology, Pediatric Gastroenterology, and Pediatric Surgery.

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Mark Salem, MD

Gastroenterology Expert | IBD & Colonoscopy

Los Angeles, California

Gastroenterology - Inflammatory bowel disease, Crohn’s disease, ulcerative colitis, colonoscopy complications, biologic therapy complication, gastrointestinal bleeding, Expert Witness, colitis, diagnostic delay, medical record review, medication adverse effects, immunosuppressive therapy complications, standard of care, causation analysis, IBD

Dr. Mark Salem is a board-certified gastroenterologist and practicing academic physician specializing in inflammatory bowel disease and complex gastrointestinal disorders. He is experienced in medical record review, clinical case analysis, and synthesis of expert medical opinions. Clinical expertise includes Crohn’s disease, ulcerative colitis, colonoscopy complications, gastrointestinal bleeding, and medication-related adverse events. He is available for consultation, deposition, and trial testimony. Provides expert medical record review, independent medical examinations, and expert opinions regarding diagnosis, treatment, standard of care, and complications of gastrointestinal disease. Areas of expertise include: -Inflammatory bowel disease (Crohn’s disease and ulcerative colitis) -Colonoscopy and endoscopy complications -post-procedural adverse events -Gastrointestinal bleeding -Post-procedure bleeding -Medication-related gastrointestinal injury -Diagnostic delay in gastrointes...

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Grant E. Barber, MD, MS

Stanford GI Faculty | Harvard MD| IBD & Procedures

Stanford University Hospital

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...

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Gregory F Churchill, DO

Gastroenterology/Hepatology - Highly Accomplished

Digestive Health Associates

Durango, Colorado

Gastroenterology, Obesity - Hepatology, Upper Endoscopy, GI Bleed, Inflammatory Bowel Disease, Colonoscopy, Decision Making Under Pressure, Celiac Disease, Patient Communication, Multidisciplinary Approach, Colon Cancer Screening, IBS, pH Monitoring, Dilation, Perforation, Functional Disorders, Quality Improvement, Disparities

I am a board-certified internal medicine physician and gastroenterologist serving the Durango, Colorado community at Digestive Health Associates. With a commitment to providing compassionate, cutting-edge care, I specialize in diagnosing and managing a wide range of digestive and liver conditions. I earned my Doctor of Osteopathic Medicine degree from the University of New England and completed my residency at Lankenau Medical Center. I further honed my expertise during my gastroenterology fellowship at the University of Florida College of Medicine – Jacksonville, where I served as Chief Fellow. Throughout my training, I received recognition for my clinical research and excellence in gastroenterology. A dedicated researcher, I have authored numerous peer-reviewed publications and presented my findings at national and international conferences. I am particularly passionate about addressing health disparities and improving access to care for underserved populations. I am currently boa...

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Mark A Molos, MD

Gastroenterology & Gastrointestinal Endoscopy

MedMalpractice Reviews

Boca Raton, Florida

Gastroenterology, Internal Medicine - Endoscopy, Colonoscopy, EGD, Esophageal Dilation, Gastrointestinal Bleeding, Crohn's Disease, Ulcerative Colitis, Colon Cancer, Colon Polyps, Barrett's Esophagus, GERD, Inflammatory Bowel Disease, SMA Syndrome, Celiac Disease, Perforation, Food Poisioing, Difficulty swallowing, Obesity Treatment

Board Certified Gastroenterologist with over 35 years of clinical experience. Innovator, Entrepreneur and holder of 5 USA Patents & Multiple PCT Patents for Medical Devices. 30,000+ colonoscopies performed. Highly Experienced Expert witness – over 100 cases, 40 Depositions and 12 Trials. Have treated many patients with Inflammatory Bowel disease with Remicade (Infliximab), Humira (Adalimumab), Cimzia (Certolizumab), Entyvio (Vedolizumab), Stelara (Ustekinumab), Skyrizi (Risankizumab), Omvoh (Mirikizumab), Xeljanz (Tofacitinib), Rinvoq (Upadactinib), Zeposia (Ozanimod), Velsipity (Etrasimod), Imuran, Prednisone. Have treated patients with Obesity and Obesity Surgery, Bariatric Surgery Complications. Extensive experience in treating and evaluating patients with Obesity, GERD (Acid Reflux), Dysphagia (Difficulty Swallowing), Abdominal Pain, Diarrhea, Constipation, Iron Deficiency Anemia, GI & Rectal Bleeding.

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Marco Ferrara, MD, FACS, FASCRS

Colon and Rectal Surgery

Orlando, Florida

Colon & Rectal Surgery, General Surgery - Anorectal, Colon Cancer, Rectal Cancer, Anal Cancer, Inflammatory Bowel Disease, Ulcerative Colitis, Crohn’s Disease, Diverticulitis, Endometriosis, Hemorrhoids, Perirectal Abscess, Perianal Fistula, Enterocutaneous Fistula, Colonoscopy, Colon Polyp, Anal Intraepithelial Neoplasm (AIN), Fecal Incontinence, Clostridium difficile

Dr. Marco Ferrara is a double board-certified general and colon and rectal surgeon with the Orlando Health Colon and Rectal Institute. A native of Orlando, he has cared for patients in Central Florida since 2018 and specializes in: Advanced robotic and laparoscopic surgery Colon and rectal cancer Inflammatory bowel disease Endometriosis Dr. Ferrara provides compassionate care for his patients, who often have life-altering conditions. He strives to collaborate with patients to ensure that they receive the best quality of care possible. He also enjoys being an educator and has been teaching medical students, residents and fellows since he finished his training. Dr. Ferrara’s Training As an undergraduate, he studied biology at the University of Florida in Gainesville, graduating summa cum laude. Dr. Ferrara earned his medical degree at the Florida State University College of Medicine in Tallahassee. He completed his general surgery residency at Brookwood Baptist Health program in Bi...

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Bruce M Grossman, MD,FACG, AGAF, FACP

Gastroenterology Expert Witness and Chart Review

Cleveland Clinic Florida

North Palm Beach , Florida

Gastroenterology - Endoscopic procedures, Colonoscopy, upper Endoscopy, Biliary Endoscopy, Liver and pancreatic diseases, functional bowel disorders, Reflux disease, ulcer diseases, esophageal diseases, inflammatory Bowel disease, Cancers of the GI Tract, gallbladder and biliary tract disease

Clinical instructor FSU School of Medicine please feel free to browse my website at Gastroenterology-expert-witness-chartreview.com

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Naziheh Assarzadegan, MD

Gastrointestinal Pathology Consultant

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...

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Meyer N. Solny, MD, FACG, AGAF

Gastroenterology-Cornell Faculty-Active Practice

Florida

Gastroenterology, Internal Medicine - Gastroenterology, gastrointestinal endoscopy, internal medicine, colonoscopy, colorectal, esophagus, gallbladder, intestines, pancreas, colon cancer, GERD, colitis, perforations, ischemic bowel, GI bleeding, inflammatory bowel disease, Crohn’s, mesenteric ischemia, IBD, Reflux

Board-Certified Gastroenterologist and Gastrointestinal Endoscopy specialist, Columbia and Cornell trained clinician, with an active Internal Medicine/Gastroenterology practice for the past 30+ years, on staff at New York Presbyterian Hospital and Weill Cornell College of Medicine. Experienced as a medico-legal consultant and expert witness for both plaintiff and defense.

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Avraham Schlager, MD, FACS

Experienced Pediatric Surgeon

Boca Raton, Florida

Pediatric Surgery - Neonatal, Necrotizing Enterocolitis, Gastroschisis, Omphalocele, Atresia, Hernia, Appendicitis, Pectus, Intestinal Obstruction, Inflammatory Bowel Disease, Laparotomy, Tumors, CPAM, Hirschsprung's Disease, Anorectal Malformations, Pilonidal, Abscess, Thyroid, Ovarian Mass, Splenectomy

I am a Board Certified Pediatric General and Thoracic Surgeon currently practicing in South Florida. Although I am Board Certified in Adult General Surgery as well, I have devoted my practice almost exclusively to Pediatric Surgery since completing my training 10 years ago, first in Akron, Ohio and now in Palm Beach County Florida. Approximately 50% of my practice is emergency procedures and 50% outpatient or scheduled surgeries. I currently practice in all areas of Pediatric Surgery of the neck, chest, abdomen and pelvis, including Neonatal and Congenital Disorders, Pediatric Tumors and Malignancies, Inflammatory Bowel Disease, Pulmonary lesions, Thyroid Disorders, Pectus Deformities, Splenic Disease, Testicular and Ovarian Torsions and Masses and Colorectal Disorders. I continue to remain involved in academic medicine and currently hold the title of Clinical Affiliate Associate Professor at FAU Charles E. Schmidt College of Medicine

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Edwin Golikov, DO

Triple Board-Certified Interventional Endoscopist

Fort Lauderdale, Florida

Gastroenterology, Internal Medicine - Pancreaticobiliary Disease, ERCP pancreatitis, EUS, Advanced Endoscopy, Endoscopy complications, PEG tube complications, Perforation, Acute Pancreatitis, Chronic Pancreatitis, Pancreatic Cysts, Cholangiocarcinoma, GI Bleeding Management, Inflammatory Bowel Disease, Esophageal Stricture, Standard of Care, Informed Consent

Triple board-certified gastroenterologist with sub-specialty fellowship training in advanced interventional endoscopy at NYU Langone Hospital. Active, high-volume practice focused on complex pancreaticobiliary disease, ERCP, and diagnostic and interventional EUS, with broad experience across inflammatory bowel disease, GI malignancies, motility disorders, and liver disease. Available to both plaintiff and defense counsel for case merit evaluation, standard-of-care analysis, procedural complication review, written expert reports, deposition and trial testimony, and independent medical examinations. Known for clear, jury-accessible explanations of complex endoscopic and pancreaticobiliary issues, meticulous attention to procedural detail, and same-day reply to attorney inquiries with rapid turnaround on case reviews and reports. Clear, candid case-merit assessments at intake, including on cases that shouldn't be pursued. Opinions grounded in methodology built to withstand Daubert an...

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Lysandra Voltaggio, MD

Nationally Recognized GI & Liver Expert

Kensington, Maryland

Pathology - Gastrointestinal Pathology, Liver Pathology, Hopkins, Surgical pathology, Board Certified, Cancer, inflammatory bowel disease, hepatocellular carcinoma, dysplasia, Barrett esophagus, perforation, colon, adhesions, gastric cancer, esophagus, anal cancer, anus

Dr. Lysandra Voltaggio is a nationally recognized gastrointestinal and liver pathologist with nearly 11 years of faculty experience at Johns Hopkins in the Division of GI and Liver Pathology. She is board-certified in Anatomic, Clinical, and Cytopathology, and currently serves as Staff Pathologist at The Joint Pathology Center and Adjunct Associate Professor at Johns Hopkins School of Medicine. Dr. Voltaggio has testified at trial and in deposition 11 times for both plaintiffs and defense attorneys. She is known for producing clear, well-reasoned expert reports and delivering unbiased, professional testimony. Attorneys consistently rely on her ability to explain complex pathology in logical, accessible terms that resonate with judges and juries. Her clinical expertise includes neoplastic and inflammatory diseases of the GI tract and liver, and she regularly provides second opinions on challenging cases nationwide. With a reputation for precision, objectivity, and collegiality, Dr....

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Marc K Taormina, MD FASGE AGAF FACG FACP

Midwest GI Health

Lee's Summit , Missouri

Gastroenterology, Hepatology - Colonoscopy, polypectomy, colon cancer screening, Colón cancer, esophageal cancer, dysphagia, esophageal dilation, Crohns disease, inflammatory bowel disease, ulcerative colitis, esophageal reflux, hiatal hernia, gallbladder disease, perforation, cirrhosis, jaundice, outpatient cancer, abdominal pain

I am a seasoned actively practicing clinician in the private practice of outpatient consultative gastroenterology/hepatology. I have been working in a collaborative GI practice with mid-levels ( APRN & PA-C ) since 1999. I am a member of the Missouri Prescription Drug monitoring task force, the Missouri State Board of Registration for the Healing Arts, and I continue active certification through the ABIM in Internal Medicine and Gastroenterology. I am the medical director of the Midwest Physicians Surgery Center, an endoscopic ambulatory surgery center accredited by JCAHO and a recipient of the ASGE Certificate of Unit excellence in quality and outcomes. We embrace new technology in gastroenterology including AI. I am current in ACLS/BCLS certification, maintain active medical staff status at Lee's Summit Medical Center and membership in the Missouri State Medical Association and AMA. I am a veteran of the US Army Medical Corps- 1980-85. I am an outside medical consultant for t...

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Mark G Ettel, MD

Gastrointestinal and Liver Pathologist

University of Rochester Medical Center

Rochester, New York

Pathology - Gastrointestinal, GI, Liver, Pancreas, Biliary, Frozen section, colon, stomach, intestine, bowel, biopsy, IBD, inflammatory bowel disease, rectum, anus, dysplasia, hepatitis, pancreas, colitis

Associate Director of Surgical Pathology (2025-present) and Director of Gastrointestinal Pathology (2021-present) at the University of Rochester Medical Center. Fellowship trained and clinically active in Gastrointestinal, Liver, and Pancreas pathology, and also clinically practice frozen section diagnosis and cardiac pathology. I have published peer-reviewed articles on a variety of topics in gastrointestinal and liver pathology including pancreatic adenocarcinoma, liver biopsy diagnosis, esophagitis, and colitis. I also have presented and moderated educational and research sessions on GI, liver, and general surgical pathology at national conferences including the United States and Canadian Academy of Pathology (USCAP) Annual Meeting and American Society for Clinical Pathology (ASCP).

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Meyer N. Solny, MD, FACG, AGAF

Gastroenterology-Cornell Faculty-Active Practice

New York, New York

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John Stratigis, MD, MSEd, FACS, FAAP

Pediatric General Surgery

Northwell Health

New Rochelle, New York

Pediatric Surgery - Necrotizing Enterocolitis, Hernia, Appendicitis, Pectus, Gastroschisis, Atresia, Intestinal Obstruction, Inflammatory Bowel Disease, Omphalocele, Laparotomy, Tumors, CPAM, Hirschsprung's Disease, Anorectal Malformations, Thyroid, Pilonidal, Splenectomy, Neonatal

I am a Board Certified Pediatric General and Thoracic Surgeon practicing in a large academic center in New York City. I perform both open and minimally invasive procedures. My practice is currently 50% elective cases and 50% emergency cases. I currently practice in all areas of Pediatric Surgery of the neck, chest, abdomen and pelvis, including Neonatal and Congenital Disorders, Pediatric Tumors and Malignancies, Inflammatory Bowel Disease, Pulmonary lesions, Splenic Disease, Ovarian Torsions and Masses and Colorectal Disorders.

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Stacey R Zavala, MD

Gastroenterologist with strong clinical experience

Zavala Medexpert Consulting

Glenside, Pennsylvania

Gastroenterology - Esophageal diseases, Stomach cancer, Barrett’s esophagus, Pancreatic diseases, Gastroesophageal reflux disease, Motility disorders, Endoscopy, Constipation, Esophageal dilation, Diverticulitis, Colonoscopy, Colitis, Inflammatory bowel disease, Liver disease, Colon cancer, Gallstones, Esophageal cancer, Colon polyps, Achalasia, Peptic u

With over 15 years of clinical experience, I bring expertise in gastrointestinal disorders, endoscopy, and colorectal cancer prevention to Zavala MedExpert Consulting. As a board-certified gastroenterologist, I provide impartial, evidence-based medical-legal reviews, leveraging my background in quality assurance and patient safety. My mission is to deliver clarity and professionalism in every case, ensuring adherence to clinical standards while contributing a diverse and balanced perspective to the team. At Zavala MedExpert Consulting, I perform comprehensive case reviews and provide expert witness services, drawing from my extensive experience in QAPI leadership and governance. My work involves monitoring clinical outcomes, ensuring compliance with accreditation standards, and delivering clear communication in depositions and testimonies. Additionally, my focus on esophageal disorders and endoscopic procedures enhances my ability to support both plaintiffs and defendants in comp...

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Patrick T Reeves, MD, FAAP, DABOM

Pediatric Gastroenterologist- low cost; BIG WINS

Wild Child Medicine, PLLC

San Antonio, Texas

Pediatric Gastroenterology, Obesity - General Pediatrics, Consumer Product Injury, Virtual, Children with Medical Complexity, Hepatology, Surgery, Malnutrition, Child abuse, Feeding tubes, inflammatory bowel disease, formulas, POTS [postural orthostatic tachycardia syndrome], dysautonomia, gastro, intestine / intestinal, abdomen, colitis, obesity, informatics, billing

I’m a quadruple board certified: Pediatric Gastroenterologist Hepatologist, General Pediatrician, Obesity Medicine specialist, and Clinical Informatics physician with advanced research skills and extensive utilization and peer to peer review experience. I am an associate professor of pediatrics and associate professor of military medicine through the Uniformed Services University, University of Texas, and Texas A&M. I have nearly 50 peer reviewed, published articles. See: https://pubmed.ncbi.nlm.nih.gov/?term=patrick+t+reeves My specific research focuses are: 1.) Describing the negative impacts of consumer product injuries- like button batteries, high powered magnets [Buckyballs] and water beads [Orbeez]- on child health 2.) Development of point-of-care tools to be used at home by families managing children with medical complexity

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Paul B. Warfield, MD, AGAF

Paul B. Warfield, MD, PLLC

Moses Lake, Washington

Gastroenterology, Hepatology - Colonoscopy, Endoscopy, Colon Cancer, Liver Disease, ERCP, Diseases of the Pancreas, Intestines, Stomach, Esophagus, Gall Bladder, and Bile Ducts, Inflammatory Bowel Disease

Chief of Gastroenterology and Hepatology, VA Medical Center, Charleston, SC, 2018-2019. Board-Certified in Gastroenterology. Johns Hopkins and University of Chicago trained clinician with 30 years practice experience and research experience in clinical trials. Served on the Boards of Directors of two large physician groups. Selected as an AGA fellow February, 2020.

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Mohit Girotra, MD, FASGE, FACG, AGAF, FACP

Interventional Gastroenterologist - Associate Prof

Swedish Medical Center

Seattle, Washington

Gastroenterology, Internal Medicine - Gastroenterology, Advanced Endoscopy, Pancreas Cancer, Inflammatory Bowel Disease, GI complications, Hepatology, Interventional GI, GI Bleeding, Ulcerative Colitis, Gallbladder, ERCP, GI Oncology, GI surgery, Crohn's Disease, Liver disease, EUS, Stents, Pancreatitis, Colonoscopy, Perforation

Dr. Mohit Girotra is a Consultant Gastroenterologist and Therapeutic/Interventional Endoscopist at Swedish Medical Center in Seattle WA. He is also Associate Professor at the Washington State University/Elson S. Floyd School of Medicine, WA. Prior to this, he was an Associate Professor at the University of Miami Miller School of Medicine, in Miami, Florida. Dr. Girotra completed his medical school at the Christian Medical College and Hospital in Ludhiana, India before joining the Johns Hopkins University/Sinai Internal Medicine Residency program where he served for an additional year as Chief Resident. During that time, he became invested with activities of the American College of Physicians (ACP) and served as Co-Chair for ACP-Chief Residents Association of Baltimore. He then completed a Gastroenterology and Hepatology fellowship at University of Arkansas for Medical Sciences (UAMS), where he was also nominated as the Chief Fellow. He served as GI faculty at UAMS, before pursuing...