Ethics Expert Witnesses: 15

Jonathan Wiesen, MD received training in Pulmonary and Critical Care Medicine with a special focus on Medical Ethics.

Dr. Wiesen is currently a Pulmonary and Intensive Care Attending Physician at Community Intensivists where his duties include general clinical care and workflow organization and protocol authorship. He also serves as a Medical Technology Analyst at OurCrowd where he is responsible for the Scientific and financial assessment of medical technology start up companies and provides multi-disciplinary interactions for assessments and investments.

Dr. Wiesen has extensive academic experience with over 75 publications, including first authorship on over a dozen full length manuscripts. He has been honored with the Teaching Excellence Award from the Cleveland Clinic, a non-profit academic medical center, which provides clinical and hospital care and leads in research, education, and health information. He also received the Best Abstract Award, Critical Care session, at the ACCP CHEST annual conference in 2014.

Litigation Support - Dr. Wiesen provides expert witness services to attorneys representing plaintiff and defendant. His services include medical record review, written reports, depositions, and trial testimony as needed.

Areas of Expertise:

Cardio-Pulmonary Hemodynamics Respiratory Physiology End of Life Sepsis / Septic Shock Pneumonia COPD Asthma Life Support

Mechanical Ventilation Smoking Related Diseases Interstitial Lung Disease Pulmonary Hypertension Lung Transplantation Biomedical Ethics Conflict Resolution Triage

“We settled the case...for $5 million. Your report played a huge role in that.  Thank you for everything!”  Nick H. 

Beth A. Mohr, CFE, FSA, CFCS, CAMS, CCCI, MPA, PI, is a Police Practices expert with over 30 years of sworn and non-sworn investigative experience.  Ms. Mohr has testified as an expert in numerous state and federal court proceedings, depositions, and administrative hearings in federal and state courts, including New Mexico, Ohio, Illinois, Arizona, California, and Washington State.  Ms. Mohr has testified on a variety of subjects, including police procedures, police misconduct, white-collar crime, and fraud examinations.  Her expertise has been verified by the courts via a Daubert challenge, in which Ms. Mohr was found to be qualified as an expert in police practices generally, and well as the specific areas of interviewing, interrogation, false and recanted confessions, cognitive bias, investigations and investigative failures, vice, and human trafficking.  Ms. Mohr is neutral, fair, and her opinions are rooted in provable facts, as well as academic literature, where appropriate.  She strives to balance her cases between defense and plaintiff-sided cases, and also provides habeas consulting services.  

Ms. Mohr is credentialed as a Nationally Certified Law Enforcement Instructor by the IADLEST, and is one of fewer than 150 individuals who have been nationally certified as an expert law enforcement instructor.  She is a Certified Fraud Examiner, Certified Force Science Analyst (FSA) Certified Anti-Money Laundering Specialist (CAMS), Certified Financial Crimes Specialist (CFCS) and a Certified Cyber Crimes Investigator (CCCI).  She is also a Private Investigator (PI) licensed in New Mexico, Arizona, Texas, and California.  

Areas of Expertise:

• Police Practices and allegation of Police Misconduct
• Excessive Force, Deadly Force & Use-of-Force
• Taser, ECWs, and other uses of force intended to be less-lethal
• Interviewing, Interrogations & False and Recanted Confessions
• Police Ethics & Ethical Failures
• Cognitive Bias, Confirmation Bias
• Investigative Failures
• False Arrest
• Failure to Train, Failure to Supervise, Monell Claims
• Evidence Handling
• Police Policy, SOPs
• Habeas Consulting, including death penalty cases
• Vice & Human Trafficking
• Sexual Assault
• Fraud & White-Collar Cases
• Retaliation & Qui Tam
• Workplace Violence & Sexual Harassment
• Private Investigations & PI Failures

During her career with the San Diego Police Department, Ms. Mohr was awarded three Commanding Officer’s Citations, which were the highest awards offered by the San Diego Police Department for investigative acumen at the time.  After retiring from the San Diego Police Department, she conducted death penalty mitigation investigations and other complex felony investigations, including homicide and white-collar cases, for the Whatcom County, Washington, Public Defender’s Office.  This includes conducting investigations of allegations of police misconduct for the City of Albuquerque Independent Review Office. Ms. Mohr recently chaired the City of Albuquerque’s Police Oversight Board, a civilian board that was created as part of the US Department of Justice’s Consent Decree with the City of Albuquerque and the Albuquerque Police Department.

Ms. Mohr has published a chapter entitled “Skepticism”, in the newly-released book The Art of Investigation Revisited, as well as having penned articles for bar journals and other peer-reviewed publications.  Ms. Mohr has taught courses on law enforcement topics, including interviewing techniques, investigative ethics, evidence collection, financial and fraud investigations, and many other topics. Her ethics courses, investigative courses, and fraud courses are certified for law enforcement credit.

Continental Who’s Who 

Executive Press Release

WILLEAM A. CHOBY, DMD - DENTIST. FOUNDER

Greensburg, PA - Prominently featured in Continental Who's Who, Willeam A. Choby, DMD is acknowledged as 2025 Dentist of the Year for his contributions to Dentistry.

Dr. Willeam A. Choby,  a renowned dental professional in implant dental surgery and reconstruction of the teeth continues to make significant strides in the field of dentistry. With a career dedicated to advancing oral health, Dr. Choby is integrating his extensive clinical expertise with innovative public health principles to improve patient outcomes and community well-being.

Dr. Choby received his Bachelor’s degree and Dental Medicine Doctor (DMD) from the University of Pittsburgh, followed by General Practice residency and appointment as Chief Dental Resident at Brookdale Hospital Medical Center in Brooklyn New York. He also earned a continuing education degree of Masters of the Academy of General Dentistry (MAGD) Complementing his dental credentials, he holds a Master of Public Administration (MPA), which enhances his ability to address oral health challenges through a public health lens. His master’s thesis “Licensure and the Dental Market” from Virginia Tech continues to stimulate the dialogue in the various state boards of dentistry.

Dr. Choby is an active member of the International Congress of Oral Implantologists (ICOI) where he earned a Diplomate degree (DICOI) and a Fellow in the International College of Cranio-Mandibular Orthopedics (FICCMO).

Dr. Choby is frequently called upon to provide his expertise on public health matters, second opinions,  peer review and malpractice questions.  He has testified in court over a dozen times and has participated in dozens of sworn depositions. 

A skilled clinician with a particular focus on dental implants and neuro muscular dental bite relations, Dr. Choby emphasizes a collaborative approach in his practice. "Teamwork between the dentist, patients, and their financial abilities along with other health professionals is essential for achieving optimal care," he explains. His patient-centered philosophy reflects his dedication to fostering trust and communication, ensuring each treatment plan is tailored to individual needs

View Dr. Choby's Consulting Profile.

GRANT D. STIEFEL, ESQ. | www.grantstiefel.com | grant@litigationlimited.com

• Grant D. Stiefel, Esq. is a nationally-recognized, full time attorney fee consultant, testifying expert and the principal of Litigation Limited, a boutique legal fee consulting firm
• Mr. Stiefel has testified in nearly 100 lawsuits, including matters in federal district courts, California trial courts, JAMS/AAA arbitrations, the Ninth Circuit Court of Appeals, State Bar courts, and attorney-client fee arbitrations
• He has qualified to testify and has testified live at trials and arbitrations as a designated attorney fee expert
• Mr. Stiefel’s methodology for reviewing, auditing and evaluating legal invoices has been cited, approved and adopted by California state and federal courts
• He has been retained as a testifying attorney fee expert by the world’s largest law firms, including Reed Smith; McDermott Will and Emery; Jones Day; Sheppard Mullin; Sidely Austin; Dykema Gossett; Orrick Herrington & Sutcliffe; and Littler Mendelson, among many others
• Mr. Stiefel is a member of the California State Bar and is unique among fee experts in that he practiced law for many years at two of the world’s largest law firms (Akin Gump and K&L Gates)
• Mr. Stiefel has managed a multi-billion dollar litigation portfolio and has audited hundreds of millions of dollars in legal fees from law firms nationwide since 2008 
• He has developed and implemented outside counsel billing and case management guidelines for Fortune 500 corporations
• He is a California State Bar-approved continuing legal education instructor on attorneys’ fees who has trained hundreds of executives and in-house counsel from a host of Fortune 500 corporations
• Mr. Stiefel is qualified as an attorney-client fee dispute arbitrator with the California State Bar’s Mandatory Fee Arbitration program and as a judge pro tem with the California Superior Court for the County of Los Angeles

SAMPLE ENGAGEMENTS

• Grant Stiefel was the testifying fee expert on a series of fee applications by class counsel in Jones v. Wells Fargo, on behalf of aggrieved California consumers in the first consumer class action brought under the Unruh Act.  Relying upon Mr. Stiefel's testimony regarding the reasonableness of hourly rates and overall work performed, the trial court awarded more than $25 million in attorneys' fees to class counsel
• The district court for the Central District of California adopted and approved Mr. Stiefel's methodology for identifying and quantifying block-billed, vague and redacted billing entries in cutting Plaintiff's fee request by more than sixty percent in CNS v. Planet, from $4.8 million to $1.9 million
• In Vides v. ABM Janitorial Services, the trial court reduced Plaintiff's fee request in a FEHA action by over $1 million based upon Grant Stiefel's expert testimony.  Plaintiff moved for an award of $1,578,232.50 in attorneys' fees, which the trial court reduced to $544,183.12.  Mr. Stiefel's testimony showed that the hourly rates claimed by Plaintiff's counsel were unreasonable under the circumstances, that excessive time was spent on inter-office communications, and that the matter was overstaffed

LITIGATION LIMITED 3377 W. Clyde Place Denver, Co 80211 (424) 223-8252 www.grantstiefel.com grant@litigationlimited.com

"Grant Stiefel draws on his experience as a big firm trial lawyer to help companies save on outside legal fees." -- NALFA (National Association of Legal Fee Analysis) “Mr. Stiefel’s qualifications as a testifying fee expert cannot seriously be in dispute.” Hon. Michael Paul Lindfield, Los Angeles County Superior Court (Trial Proceedings, February 14, 2014).

View Grant Stiefel's Consulting Profile.

Mr. Joshua Weiner, NABCEP, is a Solar Expert Witness with over 20 years of experience in policy, technology, sales contracts, project finance, permits and entitlements, project development and construction, engineering and project management, data acquisition and analysis that commonly apply to renewable energy and energy storage projects in residential, commercial, industrial, utility-scale markets, and energy storage.

Before founding SepiSolar, Mr. Weiner developed grid-connected energy storage and micro-grid projects with NRG's Station A R&D team (2015-2019) and NEXTracker's integrated energy storage program, where he played many roles in the development of solar and energy storage products and services, including design, engineering, business, policy, project, product, hardware, and software development. 

Litigation Support: Mr. Weiner brings his experience teaching courses through the UC Berkeley extension program, SepiAcademy to aid attorneys, plaintiffs, defendants, and judges in understanding the complex nuances of construction, technology, and policy of the solar and energy storage industries.

Areas of Expertise

Project Management, Planning, Execution, & Operations Asset Operations & Management Product Design Development Project Engineering Integration and Performance Engineering Engineering Operations & Management Performance Simulation and Modeling

Sales Engineering and Training Discovery & Due Diligence Energy Storage Micro-Grids Energy Technologies Economic and Financial Analysis & Modeling Pro Forma Development

View Joshua Weiner's Business Consultant Profile.

William A. Muñoz, Esq., is a Civil Trial Attorney, Legal Ethics Expert, and Third-Party Neutral with over 20 years of experience defending attorneys, and other professionals such as architects and engineers, real estate agents/brokers, real estate appraisers, and insurance brokers, as well as defending personal injury, toxic torts, products liability, defamation, wrongful termination / harassment, wage and hour and discrimination claims.

 Mr. Muñoz is currently a member of the California State Bar Committee on Professional Responsibility and Conduct (“COPRAC”) where the Committee interprets and issues opinions regarding legal ethics and the California Rules of Professional Conduct. Mr. Muñoz also serves as an arbitrator for the State Bar’s Mandatory Fee Arbitration program.

Mr. Muñoz previously served as the Chair for the Legal Malpractice Law Advisory Commission for the State Bar of California Board of Legal Specialization responsible for preparing and grading the legal malpractice law legal specialization examination as well as assessing the qualifications of potential applicants seeking the legal malpractice specialization designation and recertification.

Legal Malpractice Litigation Support - As a Subject Matter Expert, and with his wealth of experience, Mr. Muñoz is prepared to address the nuances of each case. His services are available to attorneys representing injured parties in the following areas:

Standard of Care Conflicts of Interests

Legal Ethics Reasonableness of Attorney’s Fees

Mr. Muñoz also serves as a Dispute Resolution Conference judge for El Dorado County Superior Court, a judge pro tem for Sacramento County Superior Court’s Settlement Conference Department, and more recently, a mediator for the Third District Court of Appeals Mediation Program. His approach is further informed by the renowned Straus Institute for Dispute Resolution at Pepperdine University Caruso School of Law mediation training program and the National Conflict Resolution Center mediation training program.

An expert in his field, Mr. Muñoz has presented locally and nationally on issues of legal malpractice, conflicts of interests and legal ethics and regularly contributes a column in the Association of Defense Counsel for Northern California and Nevada’s Defense Comment entitled “The Lawyer’s Lawyer” addressing issues of legal malpractice avoidance and legal ethics.

View Muñoz Dispute Resolution's Consulting Profile.

Larry Lowenthal is a nationally recognized Real Estate Expert Witness who has been retained by dozens of attorneys across the United States since 2003 to analyze failed or troubled real estate transactions. 

Based in North Central Florida, he is also retained to help with substantial commission or fee disputes.

Insurance Defense attorneys retain Larry when their broker clients are charged, while plaintiffs and their attorneys retain him when charging real estate brokers with improper conduct. 

Attorney, Lawrence H. Jacobson, has been practicing in the area of Real Estate Transaction Law and Litigation for more than 50 years. Over the past 30 years, he has been sought out as an expert witness in real estate and legal malpractice disputes and lawsuits in litigation cases throughout the country. 

His firm, The Law Offices of Lawrence H. Jacobson, A Professional Corporation, is recognized as one of the nation's premier offices providing expert testimony in litigation involving all Real Estate Matters and Legal Malpractice. 

Mr. Jacobson has been engaged in the practice of law in Los Angeles since 1968. Formerly Vice President of Legal Affairs for the California Association of Realtors, Mr. Jacobson has served as a judge pro tem for the Los Angeles and Beverly Hills Municipal Court Systems and as an adjunct professor of law focusing on real estate secured transactions and administrative law. He is Past President of the Beverly Hills Bar Association. He has written and lectured extensively on business and real estate related matters. He has served on the faculty of the Graduate Realtors Institute of the California Association of Realtors and a lecturer author for the California Continuing Education of the California Bar.

Litigation Support - Mr. Jacobson offers an impressive record of success as an expert witness in real estate, business, and finance. Included among the numerous cases in which he has testified as an expert witness are disputes over the interpretation of real estate documents, real estate and mortgage brokers’ standard of care and legal malpractice related to real estate transactions and business law including issues involved in corporate finance, merger and acquisition and ethics.

Areas of Expertise:

Real Estate Agency Obligations Real Estate Broker Fiduciary Duty Mortgage Broker Fiduciary Duty Commercial & Residential Real Estate Leasing Issues Real Estate Malpractice Mortgage Fraud

Mortgage Lending Real Estate Ethics Real Estate Standard of Care Real Estate Standard of Practice Real Estate Transactions Legal Malpractice Legal Fee Disputes

View Lawrence Jacobson's Consulting Profile.

A senior clinical faculty member at Harvard Medical School, Harold J. Bursztajn, M.D., is active in patient care in medical, psychiatric and judicial education nationally. He is qualified in both state and federal courts and is nationally recognized as a distinguished impartial, clinical, ethical and forensic expert to P/D attorneys and institutions. Individual and multispecialty team consultations available.

• Informed Consent & Malpractice
• Employment Litigation: ADA, Disability, Sexual Misconduct Discrimination, Worker's Compensation
• Emotional & Physical Damages: Conscious Pain & Suffering, Post Traumatic Stress Disorder (PTSD), Neuropsychiatry & Pain Imaging
• Standards For Experts
• Product Liability: Medical Devices & Pharmaceuticals, Toxic Tort
• Criminal Justice & Public Safety: Diminished Capacity, Drug Addiction, Competency to Confess, Death Penalty Mitigation, Workplace Safety
• Family & Custody Issues
• Testamentary & Contractual Capacity
• Professional & Organizational Ethics: Patient Care, Managed Care, Privacy
• Psychoanalysis & Cultural Perspectives

Reasoning, Inc., led by Dr. Timothy Habick, provides expert forensic linguistic services for trademark disputes, defamation cases, authorship attribution, and document evaluation.

With over two decades of experience, we deliver precise analyses, expert testimony, and solutions rooted in linguistic science and professional standards. 

Our work spans high-profile cases globally, including evaluating trademark confusion, resolving authorship disputes, and ensuring clarity in legal and educational documents. Dr. Habick's expertise in multilingual contexts and AI-detection analysis adds unique value to complex cases. Committed to meticulous, ethical practice, we provide transparent, evidence-based insights to address your language-related challenges effectively

Areas of Expertise:

Libel Defamation Slander Trademarks Invasion of Privacy Copyright Infringement Discourse Analysis Logical Analysis Logically Flawed Argumentation

Plagiarism Education Educational Examinations Bias and Fairness Psychometrics Authorship Identification Interpretation of Contracts Taped Conversations

Professional Affiliations
International Language and Law Association

Germanic Society of Forensic Linguists
International Association of Forensic Linguists (IAFL)

Dr. Phillip R. Devore actively practices dentistry in Las Vegas and he is an expert witness, case planner and evaluator to the legal profession, particularly in regard to professional liability matters. He offers advice on case viability and strategic planning for depositions and trial, and testifies in affidavits, depositions and at trial. In the last 40 years, he has testified hundreds of times in numerous states prevailing in the vast majority of his cases.

Dr. Devore graduated from UCLA in 1980, lectured there part-time for 18 years, and lectured and consulted in over thirty states, attending 1,800 dental offices. He also taught at UNLV School of Dental Medicine as a full-time Associate Professor of Clinical Sciences where he chaired the business classroom courses and was the Director of the Faculty Group Practice  in addition to his other faculty duties.

Areas of Expertise:

• Aesthetic Dentistry
• Cosmetic & Restorative Dentistry
• Dental Care Analysis
• Dental Implants
• Dentistry / Odontology
• General Dentistry

Associations & Memberships

• American Academy of Cosmetic Dentistry
• Las Vegas Dentist Member of American Academy of Cosemetic Dentistry
• American Dental Association
• Nevada Dental Association
• Southern Nevada Dental Association
• Academy of General Dentistry
• Pierre Fauchard Fellow

Divya Chander, MD, PhD, is a board-certified Anesthesiologist with a Neuroscience PhD and extensive teaching experience. Dr. Chander trained at Harvard, UCSF, UCSD, and the Salk Institute. She is currently the Chair of Neuroscience and Faculty in Medicine at Singularity University. She is also a Visiting Scholar in the Stanford Department of Medicine, Biomedical Informatics, and was a member of the Stanford Anesthesiology Faculty for 8 years.

Litigation Support - Dr. Chander offers expert witness services to attorneys representing plaintiff and defense. Services include medical record review, thorough reporting, depositions, and trial testimony as needed.

Areas of Expertise:

Neurosurgical Anesthesia Obstetric Anesthesia General surgical Anesthesia

Awareness Under Anesthesia Difficult Airway Head and Neck / ENT Anesthesia

Background Information - Dr. Chander's postdoctoral training Stanford (Deisseroth/de Lecea Labs) allowed her to use light-activated ion channels inserted in DNA (optogenetics) to study sleep and consciousness switches in brains. In the operating room, she applies EEG technology to understand what human brains and the underlying networks look like when they lose and regain consciousness. Dr. Chander also has a precision medicine initiative focused on understanding genetic variability in responses to anesthetic drugs and brain oscillations. Her goal is to understand neural mechanisms of consciousness, as well as the evolution of human consciousness secondary to human augmentation.

Dr. Chander is working on devices that read and write the brain (brain mapping, neuromodulation) and link to brain machine interfaces for diagnostic and therapeutic purposes.

Dr. Chander also works in the field of space life sciences. A finalist for astronaut selection and an alumnus of the International Space University, she has performed remote simulations of trauma rescues, anesthesia and surgery in Mars analogue settings with physicians in the US, France, and the Concordia base in Antarctica. She has also been involved with a consortium that elaborated a road-map for studying the effect of microgravity and radiation on the nervous system, cardiovascular system, cognition and sleep.

View Dr. Divya Chander's Consulting Profile.

Ernest N. Charlesworth, MD, is a Diplomate of the American Board of Dermatology, the American Board of Internal Medicine, American Board of Allergy & Immunology, and the American Board of Diagnostic Laboratory Immunology. He has over 40 years of experience in his field of expertise.

Dr. Charlesworth is one of only a few United States physicians who is board certified in both Allergy / Immunology and Dermatology. Well-versed in his area of expertise, he has published over 50 peer-reviewed articles, several textbook chapters, and two textbooks. He has been honored by the American College of Allergy, Asthma, and Immunology for both Distinguished Service and as a Distinguished Fellow.

Dr. Charlesworth offers litigation support, except independent medical examinations, to attorneys representing both Plaintiff and Defense. He has been deposed and/or testified approximately 15 times since 2010. His services include issues of causation and standard of care. Dr. Charlesworth has completed the National Catholic Certification Program in Health Care Ethics. He retired from active medical practice in May of 2014 but continues to be active in academic medicine.

Areas of Expertise:

Respiratory Diseases Asthma Immunologic and Allergic Disorders Dermatologic Diseases Allergic Skin Diseases

Allergic Drug Reactions Skin Cancers Health Effects from Toxic Mold Mycological Diseases Allergic Pulmonary Disease

Marguerita M. Cheng, CFP®, CRPC®, RICP®, Chief Executive Officer at Blue Ocean Global Wealth, is a Certified Financial Planning Expert with 18 years of experience. Prior to co-founding Blue Ocean Global Wealth, she was a Financial Advisor at Ameriprise Financial and an Analyst and Editor at Towa Securities in Tokyo, Japan. Ms. Cheng is a past spokesperson for the AARP Financial Freedom Campaign and a regular columnist for Investopedia & Kiplinger. She is a CFP® professional, a Chartered Retirement Planning CounselorSM, a Retirement Income Certified Professional® and a Certified Divorce Financial Analyst. As a Certified Financial Planner Board of Standards (CFP Board) Ambassador, Ms. Cheng helps educate the public, policymakers, and media about the benefits of competent, ethical financial planning. She served on the Financial Planning Association (FPA) National Board of Directors from 2013 – 2015 and is a past president of the Financial Planning Association of the National Capital Area (FPA NCA). 

Marguerita Cheng CNBC Interview on Social Security 

Awards and Honors - Ms. Cheng is a recipient of the Ameriprise Financial Presidential Award for Quality of Advice and the prestigious Japanese Monbukagakusho Scholarship. In 2017, she was named the #3 Most Influential Financial Advisor in the Investopedia Top 100, a Woman to Watch by InvestmentNews, and a Top 100 Minority Business Enterprise (MBE®) by the Capital Region Minority Supplier Development Council (CRMSDC).

Litigation Support - Ms. Cheng serves as a Women’s Initiative (WIN) Advocate and subject matter expert for CFP Board, contributing to the development of examination questions for the CFP® Certification Examination. She also volunteers for CFP Board Disciplinary and Ethics Commission (DEC) hearings. Services to attorneys representing plaintiff and defendant include financial due diligence, thorough reporting, depositions, and trial testimony as needed.

Areas of Litigation Expertise:

Financial Planning Issues Social Security Elder Financial Abuse

Financial Planner Standard of Care Financial Planner Code of Ethics Investor Rights

Molly S. Cobb is an experienced Equine Professional with over 40 years of experience in many aspects of the equine industry and 30 years of teaching experience. Molly has run and managed her own boarding/lesson facility for 26 years. She has developed lesson and camp programs, as well as trained people and horses. Molly is a USDF Bronze and Silver medalist, a Certified Instructor. 

Equine Standard of Care Rider Safety Equine Behavior and Inherent Risk Equine Personal Injury Stable Management

Riding Instructor Liability Equine Equipment Ethical Equine Practice Equine Boarding and Training Equine Sales