Er Expert Witnesses

Er 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 er. The er expert witness listings on this page are typically from fields/areas of expertise such as: Emergency Medical Services, Emergency Medicine, Infectious Diseases, Legal Nurse Consulting, Military, Nurse, Pediatric Emergency Medicine, Pediatrics, and Ultrasound.

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Nadia Tereshchenko, MS, MD

Jasper, Alabama
Emergency Medicine, Emergency Medical Services - Gun Shot Wound, EMS, Paramedic, Appendicitis, ER, ED, Urgent Care, Cardiac, Heart Attack, Stroke, Sepsis, Motor Vehicle Accident, EMT, Trauma, Fracture, Injury, Pneumonia, Dissection, Embolism, Seizure
Board Certified Emergency Medicine Physician with extensive experience working in Emergency Departments of various size and degree of specialization (Rural to Urban, Community to Tertiary) including specialized trauma, stroke and cardiac centers, nationwide. Prior experience as a Paramedic in a busy and high acuity 911 system. EMS Liaison Physician. Developed systems and guidelines for hypothermia and STEMI care with extensive knowledge of guidelines dictating appropriate care. Expertise in Health Care Improvement, Health Policy, Telemedicine, and Patient Decision Making. Actively licensed in CA, CO, OK, WY, PA, NE, NM, TX, ND, ID, FL, AL, MO, LA, IL, TN and MN.
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Jared R. Greenholz, MD

Top-Rated Expert in Heart Attack & Trauma Care

Arizona
Emergency Medicine - Emergency Physician, Emergency Medicine, ER, Medical Malpractice, Standards of Care, Trauma, Stroke, Airway Management, Central Line Placement, Heart Attack, Appendicitis, Epidural Abscess, Pulmonary Embolism, Medical Necessity, Head Trauma, Fractures, Diabetic Ketoacidosis, Cardiac Resuscitation
Dr. Jared Greenholz, MD is an Emergency Medicine Doctor, who primarily practices in Oakland and Lakeport, California. He has been practicing for over 19 years and is board certified in Emergency Medicine by the American Board of Emergency Medicine. Dr. Greenholz graduated from New York Medical College and is currently affiliated with Highland Hospital and Sutter Lakeside Hospital. His specialties include: Trauma, stroke, airway management, central line placement, myocardial infarction, heart attack, appendicitis, epidural abscess, aortic dissection, pulmonary embolism, testicular torsion, ectopic pregnancy, medical necessity, pediatric emergency, head trauma, emergency trauma, fractures, dislocations, rural emergency medicine, headaches, diabetic ketoacidosis, abdominal pain, medical malpractice, standard of care, and cardiac resuscitation.
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Eric Van Moorlehem, MD, FACEP

Renowned Emergency Medicine Specialist

Scottsdale, Arizona
Emergency Medicine - Emergency Medicine, ER, Emergency Room Malpractice, Emergency Department Standard of Care, ER Negligence, Trauma Care, Acute Care Expert, ER Treatment Delay, Critical Care, Stroke Misdiagnosis, Heart Attack, Sepsis, Emergency Room Wrongful Death, Stroke, Pulmonary Embolism, Meningitis, Subarachnoid Hemorrhage
Eric Van Moorlehem, M.D., is a Physician Executive, board-certified in Emergency Medicine, with 24 years of clinical experience and executive-level leadership. Dr. Van Moorlehem most recently retired as the Executive Vice President and Regional Chief Clinical Officer of the West and Central divisions for Envision Healthcare, a large national multispecialty medical group. His role was responsible for $500M in gross revenues, 110 clinical practices, over 2,500 clinicians, serving 2.5 million annual patient visits in 11 states. Hospital clients included large national, regional, and local health systems, including: UHS Hospitals, Tenet Healthcare, Adventist Health, Lifepoint Health, Banner Health, HonorHealth, Trinity Health, HSHS, Henry Ford, U. of Chicago. Dr. Van Moorlehem possesses a unique background of business experience drawing from his diverse leadership positions ranging from his recent post as EVP/CCO; Integrated Health Ventures board membership (Envision-UHS joint ven...
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DIANNE LYNNE SPOSITO, RN CEN

Highly experienced Registered Nurse

Spoz Enterprises & Productions Llc

Marina Del Rey, California
Emergency Medicine, Nurse - Nurse, Nursing, Intensive Care, ICU, Emergency Room, ER, Trauma, Medical-Surgical, Med-Surg, MEDSURG
I bring over 38 years of bedside nursing experience, specializing in the care of medical-surgical, intensive care, trauma, and emergency room patients. My clinical practice is rooted in evidence-based standards and current hospital policy, and I am consistently engaged in advancing care delivery through adherence to best practices. I am currently serving in the Emergency Department at Ronald Reagan UCLA Medical Center, I collaborate seamlessly across multidisciplinary teams to provide high-acuity, patient-centered care to a diverse population. In addition to direct patient care, I take pride in mentoring the next generation of nurses as a clinical instructor and preceptor for new graduates, baccalaureate nursing students, and onboarding staff. I’m dedicated to shaping skilled, compassionate clinicians who are confident in both critical thinking and technical expertise. I remain actively involved in evolving clinical education and practice, and I am committed to fostering a culture...
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Nathalie Quan, BSN, RN, CPAN

Board Certified Post-Anesthesia Nurse

Oakland, California
Nurse, Legal Nurse Consulting - Recovery Room, Pediatric Recovery Room, PACU, Pre-op, Pediatric PACU, Trauma, ER, Stroke, STEMI, EMTALA, Burn, Triage, Sepsis, Emergency Nursing, Anesthesia, Emergency Department
I am a board-certified post-anesthesia care nurse with over 16 years of clinical experience spanning emergency medicine and peri-operative services, including both pre- and post-operative care. I bring a meticulous, detail-oriented approach to reviewing cases involving the nursing standard of care, regulatory compliance, and policies and procedures. I thoroughly evaluate case merit through careful analysis of clinical documentation, treatment timelines, and adherence to established practice guidelines. I have served as a charge nurse in both Emergency and PACU settings, leading the development and implementation of evidence-based protocols that measurably improved patient outcomes. Direct experience in hospital policy development, including the creation of standardized protocols for sepsis management, cardiac emergencies, and post-operative care. Please reach out for additional information.
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David Joel Witt, MD, FIDSA, CIC

Infectious Disease & Emergency Med Expert

San Rafael, California
Infectious Diseases, Emergency Medicine - Internal Medicine, Tropical Medicine, Infection Control, Clinical, COVID-19, Vaccines, Transplant, MRSA, Fungal infection, Emergency medicine, ER, Sepsis, meningitis, Epidemiologist, HIV/AIDS, Tuberculosis, Osteomyelitis, infection
Dr. Witt is an Infectious Disease Specialist and the former regional hospital epidemiologist with Kaiser Permanente in Northern California. He attended medical school at the University of Michigan and residency and fellowship at The Boston City Hospital in Boston, MA. He is board-certified in Internal Medicine and Infectious Diseases. He has been board-certified in Emergency Medicine and is board-certified in Tropical Medicine and Infection Control. He has also been board-certified in Internal Medicine & Infectious Diseases. He has been on the faculty of the Schools of Medicine and Nursing at the University of California at San Francisco.
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Jared R. Greenholz, MD

Top-Rated Expert in Heart Attack & Trauma Care

Forest Knolls, California
Emergency Medicine - Emergency Physician, Emergency Medicine, ER, Medical Malpractice, Standards of Care, Trauma, Stroke, Airway Management, Central Line Placement, Heart Attack, Appendicitis, Epidural Abscess, Pulmonary Embolism, Medical Necessity, Head Trauma, Fractures, Diabetic Ketoacidosis, Cardiac Resuscitation
Dr. Jared Greenholz, MD is an Emergency Medicine Doctor, who primarily practices in Oakland and Lakeport, California. He has been practicing for over 19 years and is board certified in Emergency Medicine by the American Board of Emergency Medicine. Dr. Greenholz graduated from New York Medical College and is currently affiliated with Highland Hospital and Sutter Lakeside Hospital. His specialties include: Trauma, stroke, airway management, central line placement, myocardial infarction, heart attack, appendicitis, epidural abscess, aortic dissection, pulmonary embolism, testicular torsion, ectopic pregnancy, medical necessity, pediatric emergency, head trauma, emergency trauma, fractures, dislocations, rural emergency medicine, headaches, diabetic ketoacidosis, abdominal pain, medical malpractice, standard of care, and cardiac resuscitation.
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Jared Friedman, MD

Pediatrics/Pediatric Emergency and ALL Peds Cases

Miami, Florida
Pediatrics, Pediatric Emergency Medicine - Child, Toddler, Newborn, Teen, Adol, Pediatric, Emergency, ER, Trauma, Surgery, Abuse, Neglect, Sepsis, Respiratory, URI, Asthma, Pneumonia, Meningitis, Fever, Allergy
*PEDIATRICS/PEDIATRIC EMERGENCY MEDICINE ATTENDING PHYSICIAN - Joe DiMaggio Children's Hospital - Memorial Healthcare System/TeamHealth - Hollywood, Florida *CLINICAL AFFILIATE ASSISTANT PROFESSOR IN PEDIATRICS- Charles E. Schmidt College of Medicine - Florida Atlantic University (FAU) *PRINCIPAL CLINICAL FACULTY - Pediatric/Pediatric ER Educator, Mentor, and Lecturer for Emergency Medicine and Pediatric Residents - Joe DiMaggio Children Hospital - Memorial Healthcare System/TeamHealth - Hollywood, Florida *ON-LINE MEDICAL CONTROL/MEDICAL ADVISORY BOARD - LOCAL EMS - Not-for-Profit Community-Based State-Certified EMT/Paramedic Organization in South Florida *STARDOC - EXCLUSIVE PEDIATRIC CONCIERGE HOME SERVICES *EXPERT MEDICAL WITNESS IN EVERYTHING PEDIATRICS/PEDIATRIC EMERGENCY MEDICINE RELATED *PAST MEDIAL DIRECTOR - Prescribed Pediatric Extended Care (PPEC) in South Florida *AUTHOR AND PRESENTER: Numerous Book Chapters, Journal and Magazine Articles, Podium and Poster Pr...
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David D Axtman, PA-C

Critical Access Emergency Medicine Expert

Meridian Medlegal Group

Iowa
Emergency Medicine, Military - Critical Access, Rural, ER, ED, Physician Assistant , Physician Associate, Midlevel, Advanced practice provider, APP, Military medicine
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David D Axtman, PA-C

Critical Access Emergency Medicine Expert

Meridian Medlegal Group

Minnesota
Emergency Medicine, Military - Critical Access, Rural, ER, ED, Physician Assistant , Physician Associate, Midlevel, Advanced practice provider, APP, Military medicine
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Eric Nazziola, MD, MBA, FACEP

Paramus, New Jersey
Emergency Medicine - ER, Emergency Department, Emergency Medicine, Emergency Room, Pediatric Emergency Medicine, Emergency Medical Services, Urgent Care, Fast Track, Emergency Physician, ABEM, FACEP
I have been practicing emergency medicine and urgent care medicine since 2001. I am a diplomate of the American Board of Emergency Medicine and fellow of the American College of Emergency Physicians. In addition, I have over 10 years of administrative experience as an emergency department medical director in academic, private, urban, and community hospital settings in New York, New Jersey, and Pennsylvania. In this capacity, I have extensive experience with quality and peer review, emergency department operations, postgraduate medical education, and customer service. I have been performing medical expert reviews and depositions on behalf of both plaintiffs and defendants since 2014.
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Eric Nazziola, MD, MBA, FACEP

New York
Emergency Medicine - ER, Emergency Department, Emergency Medicine, Emergency Room, Pediatric Emergency Medicine, Emergency Medical Services, Urgent Care, Fast Track, Emergency Physician, ABEM, FACEP
I have been practicing emergency medicine and urgent care medicine since 2001. I am a diplomate of the American Board of Emergency Medicine and fellow of the American College of Emergency Physicians. In addition, I have over 10 years of administrative experience as an emergency department medical director in academic, private, urban, and community hospital settings in New York, New Jersey, and Pennsylvania. In this capacity, I have extensive experience with quality and peer review, emergency department operations, postgraduate medical education, and customer service. I have been performing medical expert reviews and depositions on behalf of both plaintiffs and defendants since 2014.
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Brian Lee, MD

Board-Certified Emergency Medicine Expert

Port Jefferson Station, New York
Emergency Medicine, Emergency Medical Services - pediatric emergency medicine, sepsis management (ED), emergency room malpractice, stroke tPA decision-making, ER standard of care, EMTALA transfer, emergency medicine chart review, emergency department delay, medication error, ED delay, myocardial infarction, pulmonary embolism, aortic dissection, misdiagnosis
I am a board-certified Emergency Medicine physician practicing in New York with 15+ years of front-line clinical experience. I provide impartial expert consultation for both plaintiff and defense counsel, including case screening, merit reviews, literature-supported reports, deposition, and trial testimony. Core expertise (ED standard of care): • Triage, EMTALA compliance & inter-facility transfer • Sepsis, stroke (thrombolysis decisions), acute coronary syndromes, pulmonary embolism, aortic dissection, appendicitis, and other time-sensitive diagnoses • Trauma resuscitation, airway management/intubation, procedural sedation • Medication safety, documentation quality, ED operations & crowding, delay in care Quality & leadership: • Member, General Surgical Performance Improvement (PI) Committee—collaborating on morbidity & mortality review, systems improvement, and guideline adherence • Experienced in EMR/audit-trail analysis, timeline reconstruction, and standards-based critique R...
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David D Axtman, PA-C

Critical Access Emergency Medicine Expert

Meridian Medlegal Group

Sioux Falls, South Dakota
Emergency Medicine, Military - Critical Access, Rural, ER, ED, Physician Assistant , Physician Associate, Midlevel, Advanced practice provider, APP, Military medicine
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Gregory Finch, PA-C

Knoxville, Tennessee
Pediatric Emergency Medicine, Emergency Medicine - Emergency Medicine, Pediatric Emergency Medicine, Emergency Medicine Physician Assistant, Pediatric Emergency Medicine Physician Assistant, ER, PEM, PA, PA-C, PAC
I have being practicing emergency medicine as a physician assistant for 15+years, since 2011. I have always seen patient's of all ages, but most recently 2/3 of my shifts are specifically in a pediatric ER, while the other 1/3 are at a community hospital and level 1 trauma center. I pride myself on caring for wide range of acuities and keeping my knowledge up-to-date. I started doing medical case reviews the last 3 years and have done a total of 11 (5 plaintiff and 6 defendant). Between my experience and knowledge, I feel comfortable reviewing medical charts for all age ranges. I can ensure a quick turn around time and look forward to continuing to grow my case review career. I appreciate the opportunities!
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Amar Vira, MD

Emergency Medicine Physician Expert Witness

Austin, Texas
Emergency Medicine, Ultrasound - Chest Pain, ER Standard of Care, Causation, Freestanding ER, Emergency Department Operations, Acute Injury, Motor Vehicle Collisions, Falls and Trauma, Diagnostic Errors, Treatment Delays, Triage, Documentation, Imaging Appropriateness, Medication Errors, Risk Stratification, Personal Injury Medicine, Stroke and Neurologic
Location: Austin, Texas Licensed In: Texas (available for nationwide case review) Profile Summary: Board-certified Emergency Medicine physician actively practicing in high-acuity emergency settings, including freestanding and hospital-based EDs. Experienced in trauma, cardiac emergencies, stroke, toxicology, and acute injury evaluation. Provides clear, well-supported opinions on standards of care, causation, and emergency department operations. Expert Witness Services: • Standard of care reviews • Causation analysis • Emergency department operations, protocols, and triage • Freestanding ER workflow, documentation, and billing practices • Diagnostic error and treatment delays • Personal injury: motor-vehicle collisions, falls, workplace injuries • Medication management and decision-making analysis • Affidavits, written reports, deposition, and trial testimony • Independent Medical Examinations (IMEs) Case Types Handled: • Emergency department management of acute conditions • Timin...