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Liver Expert Witnesses

Liver 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 liver. The liver expert witness listings on this page are typically from fields/areas of expertise such as: Diagnostic Radiology, Forensic Pathology, Gastroenterology, General Surgery, Hematology, Hepatology, Interventional & Vascular Radiology, Oncology, Pathology, Pediatric Critical Care Medicine, Pediatric Gastroenterology, Pediatrics, Pharmacology- Clinical, Radiology, and Surgical Oncology.

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Eric vanSonnenberg, MD

Diagnostic & Interventional Radiology

University of Arizona College of Medicine

Cave Creek, Arizona

Radiology, Interventional & Vascular Radiology - Interventional Radiology, abscess, biliary, kidney, cancer, Ablation, stones, gallbladder, chest x-rays, CT scans, pancreatitis, complications, liver, post operative complications, ultrasound

Board Certified in both Internal Medicine & Radiology Harvard trained Extensive medical malpractice experience Extensive publication & lecturing experience Current or previous academic medical faculty member at: Harvard, UCSD, UCLA, University of Texas, University of Arizona

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Howard S Robin, MD

Causation expert: medical legal and criminal cases

LJ Pathology Consultants

La Jolla, California

Pathology, Forensic Pathology - Motor Vehicular Accidents, Drug Overdose, Toxicology, Homicide, Opiates/opioids, DUI/DWI, Molecular Diagnostics, Immunology, Forensic Pathology, Autoimmune Diseases, Drugs of Abuse, Transfusion reactions, Laboratory medicine, Anatomic pathology, Clinical pathology, Immunopathology, Breast Cancer, Kidney, Liver, Blood Banking

48 years providing expert testimony in pathology cases. Extensive experience in deposition and courtroom testimony. Autopsy experience coroner's office. 37 years of experience directing clinical and anatomic pathology laboratories in hospital and outpatient settings. Special focus on blood banking, cancer diagnosis, toxicology, immunology, pharmacology, including drugs of use and drugs of abuse.

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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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Michael K. Davis, MD, MBA

Outpatient pediatrician, urgent care, and Peds GI

Gainesville, Florida

Pediatrics, Pediatric Gastroenterology - child abuse, malpractice, neglect, child sexual abuse, gastroenterology, hepatology, liver, infants, newborns, missed diagnosis, respiratory, disease, infection, weight loss, malnutrition

I am a board-certified general pediatrician, pediatric gastroenterologist, and pediatric hepatologist (liver disease) at a large state university in excellent standing. I am willing to serve as an expert witness to advocate for high-quality and safe medical care for children and their families. Most of my reviews have focused on protecting the rights of patients and families but I will consider all types of reviews. I have been in active practice for over 20 years and have never been the subject of any legal action. I have expertise in outpatient and inpatient pediatrics, missed diagnoses, child abuse, gastrointestinal disease, liver disease, respiratory disease, and infant care. With my MBA training I am also familiar with hospital and clinic processes. Rapid turn-around on case reviews and medical research. Call, text, or email for free 15-minute screening phone/Zoom consultation.

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David S. Borislow, MD

Gastroenterology and Liver Disease Specialist

David Borislow MD, PLLC

Treasure Island, Florida

Gastroenterology, Hepatology - Endoscopy, colonoscopy, colorectal cancer screening, Barrett’s esophagus, GERD, diseases of the esophagus, stomach, intestines, pancreas, liver, hepatitis, gastric and duodenal ulcers, food borne illness, perforation, pancreatitis, colon polyp, food poisoning, Colon cancer, Rectal cancer

I am an experienced board-certified gastroenterologist, trained at The Johns Hopkins University School of Medicine and Duke University Medical Center. I have practiced in the Tampa Bay area for over 35 years, where I have both directed my own practice, and was instrumental in the formation of a large single specialty group practice. I have been involved in the formation and management of several endoscopy centers, and have been the Chief of Endoscopy at a large regional hospital for several terms. I have been on the American College of Gastroenterology Practice Management Committe, which included medical legal issues, and co-chaired a national conference for the ACG on practice management. I am open to reviewing cases for both defendants and plaintiffs, including depositions and trial testimony. In addition, I have also reviewed records and offered my expert opinion related to potential food-borne illness assertions and medical causation.

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Samuel S Thomas, MD

10+YRS EXPERT WITNESS EXP; TRIPLE BOARD CERTIFIED

Advent Health Cancer Institute - Medical Oncology

Windermere, Florida

Oncology, Hematology - cutaneous malignancies, gastrointestinal malignancies, melanoma, skin cancers, merkel cell, gastric, esophageal, liver, pancreas, colon, rectal, small bowel, neuroendocrine tumors, adenocarcinoma, soft tissue sarcoma, bone sarcoma, anal, abdominal, immunotherapy, chemotherapy

Samuel S. Thomas, MD Triple Board-Certified Medical Oncologist & Hematologist Windermere, Florida | Phone: (954) 663-7551 | Website: www.medoncmd.com Expert Witness Profile Dr. Sajeve Thomas is a triple board-certified (Internal Medicine, Hematology, Medical Oncology) medical oncologist with over 14 years of active clinical practice and more than 100 expert witness case reviews. He provides expert consultation for both plaintiff and defense in oncology-related malpractice claims, with specific expertise in cutaneous, gastrointestinal, and soft tissue malignancies. Dr. Thomas is known for his ability to clearly explain complex medical issues to juries, backed by balanced litigation experience, academic involvement, and ongoing clinical practice at a major cancer center. Areas of Expertise Delayed or missed cancer diagnosis Chemotherapy and immunotherapy complications Causation and prognosis in metastatic disease Standard of care reviews (SOC) Oncology adverse events & treatment dev...

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Paola Vietoris, RN, BSN

DUNKIRK, Maryland

Pediatric Critical Care Medicine, Pediatrics - Pediatric Critical Care, Sedation, Cardiac Arrest, Respiratory Failure, Sepsis, child abuse, Liver, Kidney, Pancreatic and Intestinal Transplantation, Peds Gastroenterology, Peds Hematology/Oncology, Seizures, Procedural Sedation, Pre-op and post-op surgical care

I am a full-time practicing RN with over 30 years' experience working in a pediatric ICU at a major medical institution in Washington, DC. My work primarily is with critically ill newborns and young adults. Skills and experience include caring for patients in multisystem organ failure, respiratory distress, respiratory failure, liver, small bowel, pancreatic and kidney transplant, neurological, pre-op and post-op surgical care, and neurosurgical diseases, infectious diseases, non-accidental trauma (NAT) and continuous renal replacement therapy (CRRT). Consistent focus on evidence-based nursing care as well as other nursing standards. I am a licensed registered nurse (RN) with an unrestricted nursing license in 37 states and the District of Columbia. My extensive experience enables me to provide expert witness services to attorneys and other legal professionals. Available for consultation, case evaluation, deposition and testimony.

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Jason Reich, MD

Gastroenterology & Hepatology Expert Witness

Sharon, Massachusetts

Gastroenterology, Hepatology - Inflammatory bowel disease (IBD), Crohn's disease, Ulcerative colitis, Irritable bowel syndrome (IBS), gastrointestinal bleeding, acid reflux (GERD), colon cancer, pancreas, liver, hepatology, Barret's Esophagus, GERD, Cirrhosis, endoscopy, colonoscopy, diverticulitis, perforation, gastric ulcers, fatty liver disease, gastrointestinal m

Dr. Reich is an academically trained gastroenterologist and has been an expert witness for the past few years. He currently practices gastroenterology with Southcoast Health in Southern Massachusetts. Over the last 4 years, he has been retained in several cases, offering his expert opinion for both defense and plaintiff attorneys. He is board certified in Gastroenterology, and Internal Medicine, and licensed to practice medicine in the states of Massachusetts, Florida, New Mexico and Indiana. He also serves as a gastroenterology consultant for Evens https://evens.com/ to help to roll out an online personalized acid reflux treatment platform. He has a particular interest in telemedicine and digital health and provides consults for 2nd.MD, as well as Sitka. Dr. Reich also has experience with medical chart review and has written numerous articles for medical news websites.

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Angela B Shannon, MD

Happy Tummies Pediatric GI Clinic

Flowood, Mississippi

Pediatric Gastroenterology - Abdominal Endoscopy, Colonoscopy, Liver, Reflux, Gastritis, Intestine, Abdominal Pain, Liver Disease, Colon, Failure to Thrive, Vomiting, Small Intestine, Constipation, Diarrhea

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George Miller

Surg Onc & Gen Surg - former NYU Chair

Holy Name Medical Center

Englewood, New Jersey

General Surgery, Surgical Oncology - Hepatobiliary, Whipple, Bowel surgery, Oncology, Pancreas, Liver resection, Translational Medicine, Monoclonal antibodies, Liver, Liver, Cancer research, Drug development, Bile duct, Colon, Drug safety - Bench to Bedside, Intellectual Property, Gall bladder, Cancer, Immunotherapy, Regulatory Compliance

George Miller, MD, is Division Chief of Surgical Oncology and the Medical Director of Oncologic Surgery at Holy Name Medical Center. Dr. Miller, certified by the American Board of Surgery, is one of the nation's leading surgeon-investigators, with a distinguished career as an accomplished surgeon and scientist. He is a highly experienced general surgeon and surgical oncologist recognized for his expertise in the treatment of complex surgical and oncologic diseases and hepatobiliary and gastrointestinal cancers, especially those affecting the liver, pancreas, and GI tract. He as performed more than 2,000 complex general surgery and hepatobiliary and pancreatic surgical oncology operations with fantastic results. Dr. Miller maintains an active clinical surgical practice. He completed his residency training in General Surgery at NYU and a trio of fellowships at Memorial Sloan Kettering Cancer Center in Surgical Oncology, Hepatobiliary-Pancreatic Surgery, and Experimental Immunothera...

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Umut Sarpel, MD, MSc, FACS

Award-Winning Oncologic Surgeon

NEW YORK, New York

General Surgery - Surgical, Oncology, Hepato-Pancreato-Biliary Surgery, General Surgery, Clinical Research, Cancer, stomach, pancreas, liver, biliary tree, small bowel, colon, sarcomas, robotic surgery

Umut Sarpel, MD, MSc, is a board-certified surgeon who specializes in Surgical Oncology and Hepato-Pancreato-Biliary Surgery. She received her Bachelor of Science degree with Distinction in Research from the University of Rochester and earned her medical degree from the State University of New York at Buffalo. Dr. Sarpel completed her residency in General Surgery at the Icahn School of Medicine at Mount Sinai and then pursued an additional two years of fellowship training in the field of Surgical Oncology while attaining a Master of Science in Clinical Research. She is a Fellow of the American College of Surgeons and a Fellow of the Society of Surgical Oncology. Dr. Sarpel specializes in the care of patients with cancers of the stomach, pancreas, liver, biliary tree, small bowel, and colon, as well as sarcomas. Her practice includes open and robotic surgery. In addition, she performs Heated Intraperitoneal Chemotherapy (HIPEC) for the treatment of carcinomatosis. A compelling stor...

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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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Robert Freed, MD

ER & ICU Imaging – Chest/Abdomen/Pelvis

Midwest Radiology

Pittsburgh, Pennsylvania

Radiology, Diagnostic Radiology - Emergency Radiology, Abdominal Imaging, Body Imaging, Thoracic Imaging, Artificial Intelligence, Radiology AI, Appendicitis, Bowel Obstruction/perforation, PE/DVT, Pneumonia, Lung Cancer, Breast Cancer, Liver, Kidneys, Spleen, Aortic rupture/dissection, Pancreatitis/pancreas cancer, Traumatic Injury, Trial Demonstratives, 3D Printing

I am uniquely positioned to opine on imaging of the chest, abdomen, and pelvis, with dual fellowships in Abdominal Imaging and Emergency Radiology from UPMC, where I also served as faculty, and a full time practice at Midwest Radiology, the nation’s largest physician owned radiology group with more than 180 radiologists. My daily work focuses on high volume CT and MRI interpretation for emergency patients, giving me both academic rigor and real world perspective. I frequently consult on malpractice cases involving missed or delayed diagnoses, emergency imaging interpretation, and complex abdominal and chest pathology. Attorneys and paralegals rely on me for meticulous, well documented reports, dependable turnaround, and testimony that makes complex imaging understandable. When helpful for case presentation, I collaborate with the healthcare division of Ricoh to transform a patient’s CT data into precise visual reconstructions and 3D printed models. These life sized models can demo...

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Timothy J Atkinson, PharmD

Overdose Pharmacology and Toxicology Expert

Vanguard Pain Management Consulting LLC

Murfreesboro, Tennessee

Toxicology, Pharmacology- Clinical - Opioids, Gabapentin, Pregabalin, NSAIDs, Polysubstance, Addiction, Overdose, Suicide, Poisoning, Toxicology, Malpractice, Wrongful, Risk Mitigation, Opioid Safety, Taper, Opioid Discontinuation, Controlled Substances, Respiratory Depression, Kidney, Liver

Dr. Atkinson is a Clinical Pharmacy Practitioner in Pain Management specializing in high-risk chronic pain medication management for more than 12 years. He has extensive experience in providing comprehensive drug therapy management with controlled substances, polypharmacy, and polysubstance use. He ran a suboxone clinic for patients with comorbid opioid use disorder and high-risk chronic pain for years and served as director of a pharmacy pain residency training program. Dr. Atkinson is a frequent and experienced national speaker at pain conferences on pain pharmacology and toxicology topics. Dr. Atkinson is a national subject matter expert in opioid and controlled substance prescribing and management including regulatory requirements for standard risk mitigation activities. He has served for many years as a public policy expert on opioids for federal agencies, guideline workgroups, and the section editor on opioids and substance use disorders for the journal of pain research. ...