Surgical Expert Witnesses
Surgical 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 surgical. The surgical expert witness listings on this page are typically from fields/areas of expertise such as: Critical Care Medicine, Emergency Medical Services, General Surgery, Health Informatics, Infectious Diseases, Internal Medicine, Nurse, Orthopedic Surgery, and Orthopedics - Non-Surgical.
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Andrea N Abrams, MSN, RN, CCRN, PHN
Critical Care Nurse Expert
Abrams Nurse Expert Consulting
Menifee, California
Nurse, Critical Care Medicine
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Critical Care, Trauma, Surgical, Recovery Room, Adult, Pulmonary, PACU, Nursing Education, Post-Anesthesia, ICU, Informatics, Discharge, Stroke, Documentation, Anesthesia, Life Support, Head Trauma, Brain Bleed, Cardiac Arrest, Neurology
I am a highly experienced critical care nurse with more than 10 years of practice at a Level 1 trauma center, where I have provided care to critically ill and medically complex patients in high-acuity, fast-paced environments. My clinical background includes extensive experience in Neuro-ICU and Post-Anesthesia Care, with a focus on managing neurologically compromised patients, post-surgical recovery, and rapid clinical deterioration.
I hold a master's degree in nursing and am currently completing my PhD, reflecting my commitment to advancing clinical knowledge, evidence-based practice, and healthcare outcomes. I have maintained national certification in critical care since 2017, demonstrating continued expertise and adherence to the highest standards of nursing practice.
Throughout my career, I have served in multiple roles that support both bedside care and hospital-wide clinical operations, including critical care nurse, rapid response nurse, house supervisor, charge nurse, and...
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Michael J Oechsel, MD
California Orthopedics and Spine
San Francisco, California
Orthopedic Surgery, Orthopedics - Non-Surgical
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Trauma, Disc, Fracture, Tendon, Ligament, Extremity, Spinal, Musculoskeletal, Dislocation, Subluxation, Tear, Rupture, Sprain, Strain, Crush, Surgical, Fixation, Reduction, Arthritis, Joint
Dr. Oechsel has actively practiced as an Orthopedic Surgeon for over 33 years as a general Orthopedist and continues to do so. He has experience with almost all aspects of this field. Dr. Oechsel can render opinions on many different Orthopedic issues. This allows him to address multiple issues, injuries and problems in any single case, if needed.
He prides himself in taking on the most complex cases and understands all the Orthopedic aspects of a case. Reviews, reporting, preparation, and testimony are meticulously detailed.
For over twenty years, Dr. Oechsel has performed medical-legal expert witness work including Independent Medical Examinations, Independent Medical Record Reviews, depositions, and testimony. He has participated in over 150 depositions and has testified in about 40 trials.
His opinions are well respected, as he continues to be retained by both the Defense and Plaintiff bar.
He is Board Certified by the American Board of Orthopedic Surgery
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Anna Gray, RN, CRNFA, CNOR
Surgery & Operating Room Audit Trail Specialist
Valencia, California
Nurse, Health Informatics
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Operating Room Nurse, Circulating Nurse, RN First Assistant, Audit Trail Analysis, Robotic Surgery, Orthopedic Surgery, Vascular, Gynecology, Spine/Neuro, Documentation Errors, Operating Room, Surgery Center, Trauma, Surgical Errors, Health Informatics, EMR Review, Intraoperative Injury, Surgical Standards of Care, Scrub Nurse
Anna Gray, RN, CRNFA, CNOR is a Certified Registered Nurse First Assistant with over 25 years of perioperative experience across hospital-based operating rooms and ambulatory surgery center leadership.
Her operating room expertise spans robotic (gynecologic oncology, urology, general surgery, hepatobiliary, vascular), complex general, vascular (bypass, carotid, endovascular), orthopedic (total joints: knee, hip, shoulder), neurological (spinal, bleed evacuation, tumor resection), & trauma.
With hands-on experience in first assisting, circulating, scrubbing, and precepting. This multi-role background provides a comprehensive understanding of surgical team dynamics, role-specific responsibilities, and intraoperative decision-making.
Ms. Gray is a former Clinical Director of Operations for a free-standing surgery center, where she oversaw operating room workflow, staffing, regulatory compliance, and quality assurance initiatives. She has extensive experience evaluating adherence to...
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Ari Frenkel, MD MPH
Infectious Disease Expert Witness (FL TX AL)
Boca Raton, Florida
Infectious Diseases, Internal Medicine
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Sepsis, delayed antibiotics, delayed diagnosis, Epidural abscess, Endocarditis, Bacteremia, MRSA, C. DIFF, Osteomyelitis, Septic Arthritis, Healthcare associated infection, CLABSI, Meningitis, Failure to diagnose, Necrotizing, Septic shock, Prosthetic device infection, Failure to act on test result, Failure to follow up, Surgical
Board-certified Infectious Disease expert witness with over 17 years of combined clinical and leadership experience with a focus on infectious disease management and standard of care. Expertise includes failure to diagnose infection, sepsis management, delayed antibiotic therapy, and hospital-acquired infections.
Readily available to be retained for case review, deposition, and trial testimony as an infectious disease expert witness in cases involving sepsis, failure to diagnose, delayed treatment, and infection-related complications. I evaluate deviation from the standard of care and causation in complex infectious disease cases.
Case focus includes:
- Failure or delay in diagnosis of infection and sepsis
- Delayed or inappropriate antibiotic therapy (standard of care)
- Hospital-acquired infections: CLABSI, MRSA, C. difficile
- Failure to obtain an infectious disease consult
- Bacteremia, endocarditis, osteomyelitis
- Epidural abscess and meningitis mismanagement
- Device/prost...
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Alexandra Hafenbrack
Clinically active PCU & Med/Surg Registered Nurse
Lehigh Acres, Florida
Nurse
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Progressive care, Medical/surgical, Inpatient Rehab, Med/Surg, Neurology, Stroke, Neurosurgery, Trauma, Orthopedics, Neuroscience, Cardiac, Surgical, Acute care, Stroke, Wound, Traumatic brain injury, Registered nurse, Pain, Hospital, Falls
I’m a clinically active Registered Nurse with 11 years of experience working in progressive care (PCU) and Medical/Surgical nursing in acute care hospitals. Previous experience within the last 5 years in inpatient rehab and intermediate care.
Licensed in Florida with a compact (multi-state) nursing license.
My specialities in PCU and Med/Surg include trauma, neurology, neurosurgery, stroke, orthopedics, wound care (pressure injuries), cardiac, surgical care, telemetry, inpatient rehab, geriatric care, and a wide range of medical conditions.
I’m a stroke certified nurse with my NIHSS certification and additional certifications in advanced cardiac life support (ACLS) and basic life support (BLS).
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Johnathan Hogzett
Critical Care, ED, & Trauma Nursing Expert Witness
Omaha, NE, Nebraska
Emergency Medical Services, Critical Care Medicine
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Heart, Vascular, Neurology, Trauma, Emergency, Hospital Administration, Electronic ICU, telemedicine, nursing administration, critical care, ED, medical, surgical, quality review, electronic record review
Seasoned nurse leader and educator with nearly 20 years of experience in critical care, emergency, and trauma services. Former Vice President of Patient Care Services and Chief Nursing Officer at a Level 1 Trauma Center. Full-time faculty at Creighton University College of Nursing, bringing real-world expertise to nursing education. Master’s in Nursing with a focus on Healthcare Administration; doctoral candidate in Nursing Administration and Leadership. Expert in standards of care, medical record review, and evidence-based practice. Recognized "40 Under 40" nurse leader, experienced board member, and certified in Hospital Incident Command. Skilled at delivering clear, thorough, and objective expert opinions.
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Umut Sarpel, MD, MSc, FACS
Award-Winning Oncologic Surgeon
NEW YORK, New York
General Surgery
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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...