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Environmental Medicine Expert Witnesses

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Hung K. Cheung, MD, MPH, FACOEM.
1421 Clarkview Road Suite 100
Baltimore MD 21209-2188
phone: Toll Free 888-361-8882 or 443-322-1228
Hung Cheung Respiratory Environmental Medicine Expert PhotoHung Cheung, MD, MPH, FACOEM, President of Cogency Environmental, has more than 20 years of experience and is a nationally-recognized expert in Respiratory Environmental Medicine, Legionella Outbreaks, Environmental and Toxiological Investigations, Risk Communication and Medical Advisory Services.

A former Maryland State Medical Director, he teaches at the Johns Hopkins Bloomberg School of Public Health and is faculty to the Occupational and Environmental medicine program at the University Of Pennsylvania Perelman School Of Medicine. Dr. Cheung also teaches AIHA (American Industrial Hygienists Association) webinars on the topic of Legionella nationally. Board Certified in both Internal Medicine and Preventive Medicine, he holds a Master’s in Public Health from Johns Hopkins and has a medical degree from the University of Maryland.

Dr. Cheung has extensive experience working on issues of Indoor Environmental Quality on matters related to molds, microbial, chemical, and other contaminant exposures in commercial buildings, manufacturing plants, schools, and various public and residential facilities. His philosophy is a preventive medicine approach, i.e., to design, educate and prevent occurrence or reoccurrence of exposures, injuries and illnesses by determining the root cause(s) of environmental diseases, injuries or accidents and developing a plan of action for resolving the problem.

Litigation Support - Dr. Cheung provides litigation support services to counsel representing both Plaintiff and Defense. His services include clinical evaluation, diagnostic testing, environmental testing, site inspections, sampling, research development and hypothesis testing, modeling, risk communication and town hall meetings, and expert testimony when necessary.

Environmental and Occupational Health Areas of Expertise:
  • Asbestos, Lead, Benzene
  • Various Chemical Agents / VOCs / Solvents
  • Mercury / Heavy Metals
  • Metal Washing Fluids
  • Smoke Inhalation Injuries/ Air Pollution
  • Mold / Microbial Contamination
  • Indoor Air Quality / Sick Building Syndrome / Chinese Drywall Investigations
  • Innate Immunity / Infectious Agents
  • Legionella / Outbreak Investigations
  • Cancer Cluster Analysis
  • Epidemiology / Research Methods
  • Physical or Mental Impairments
  • OSHA Regulatory Compliance
  • Crisis Response
Dr. Cheung on New York Legionnaire's Disease ABC2 News

View Dr. Cheung's Consulting Profile.
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8,500 Experts 250 Specialties
6425 Christie Avenue, Suite 260
Emeryville CA 94608
phone: 800-275-8903
fax: 510-486-1255
Medical Experts for Malpractice & Personal Injury Cases
AMFS is America's premier medical expert witness and consulting company. We are a trusted partner with the legal community and provide a superior method of retaining medical experts. Since 1990, we have provided board-certified medical experts in over 10,000 medical malpractice and personal injury cases with a 92% win-rate compared to the industry average of 28%.
  • 8,500+ Medical Experts in 250+ Specialties
  • Active Practice Physicians with Legal Experience
  • Free Cost Attorney-Physician Consultations
  • Medical Record Review & Testimony
  • Independent Medical Examinations (IME) & Autopsies
  • Essential Affidavits & Reporting
  • Credible Expert Witnesses Resolving Medical Cases
    At AMFS, we carefully screen our experts to ensure that they are in active practice and are not "professional" experts. Our internal policy of blind presentation and review ensures objectivity and enables our experts to provide forensic testimony with the highest credibility. We maintain our high standards through oversight from an advisory board of esteemed medical professionals.
    Learn More: Medical Expert Witness
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    Dr. Olen Brown, PhD
    Toxicology / Medical Sciences / Environmental Sciences
    527 North Cedar Lake Drive, West
    Columbia MO 65203
    phone: 573-449-7444
    Dr. Olen R. Brown, PhD is a board certified Diplomate in Toxicology and member of the standards of knowledge committee. He has the PhD in Microbiology With over 35 years of experience in Life Sciences and more than 150 publications. Dr. Brown specializes in complex, multidisciplinary cases, and he focuses on Human Medicine using the disciplines of bacteriology, virology, immunology, epidemiology, biochemistry, physiology, analytical chemistry, toxicology, and environmental sciences.

    Dr. Brown has provided litigation support services for 180+ cases in 25 states and 1 in Canada. Dr. Brown has served in Plaintiff/Defense, and Criminal/Civil cases. He has testified in 20 trials and 31 depositions. Dr. Brown's expertise include: cause-and-effect determination after medical record review; risk assessment and causation determination from toxic exposure; evaluation of the therapeutic and harmful effects of ethical drugs, antibiotics, alcohol, and drugs of abuse; the toxicity of solvents, pesticides, heavy metals, ozone, carbon monoxide, particulates, and most organic chemicals for most organ systems including the lung (Asthma, COPD, RADS) and the brain (Parkinson's), Dr. Brown has evaluated human medical and veterinary medical devices and pharmaceuticals for safety.

    Areas of Expertise
    • Toxicology (General, Academic, Pharmacologic, Forensic, Regulatory)
    • Medical Sciences - Microbiology, Immunology, Bacteriology, Virology, Cell Physiology, Infectious Diseases, Cancer, Allergy, Mechanisms of Diseases
    • Microbiology - Medical, Molecular Biology, Veterinary Medical, Environmental
    • Environmental Biology - Hazardous Wastes; Air, Water and Soil Pollution
    • Chemistry - Biochemistry, Analytical, Organic
    • Veterinary Sciences - Cell Physiology, Mechanisms of Disease
    View Dr. Brown's Consulting Profile.
    2/17/2002 · Expert Witnessing
    Attorneys use experts in two ways. First is the traditional use of an expert as a witness in court. In this role, scientists, business people, or others with technical knowledge are retained by attorneys primarily for their opinions (oral, written, or both), ultimately to be given at deposition and in civil and criminal courts. Second, the expert may be used as a pre-trial consultant or more specifically as an undisclosed consultant

    Olen R. Brown, PhD
    "Miracles" reveals truth from Scripture, science and life. Everything that is or was or is to come is part of God's miracle. Science says that nothing is miraculous- Time and Chance created the universe with no meaning or purpose. God's universe has great meaning extending from the stars to atoms and to you. What we believe about miracles can be a source of great joy or missed joy in our lives. Dr. Brown, a Christian and author of over 100 scientific papers, has coined a new word, synscicretism, to call attention to the doctrine that today elevates science above religion. Science works best for the great "how" questions, but poorly for the great "why" of all things.
    Olen R. Brown, PhD
    This authoritative guide is designed to achieve a synthesis of understanding and effort between case science and case law. It examines all stages of attorney/expert interaction from the initial interview to post-trial evaluation.
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    Vera F. Dolan, MSPH, FALU
    454 Beltrami Drive
    Ukiah CA 95482
    phone: 707-463-3200
    Vera Dolan is an epidemiologist with over 30 years of experience in the life and health insurance industries. She is one of the leading mortality experts in the life insurance industry. She writes underwriting manuals and policy and procedure manuals for life and health insurance companies.

    Vera has testified in both state and federal court, and has been retained in over 100 cases since 2006 for plaintiffs and defense on an equal basis. She is very credible testifying in deposition and on the stand.

    * Life expectancies that are personalized and accurate to the standards of the life insurance and life settlement industries. Addresses the cases when life expectancies that are simply taken from a life table or estimated by a doctor, actuary or biostatistician are not sufficient or credible. Addresses the cases when a complete insight into the individual's medical conditions and/or personal history of high-risk behaviors is needed to assist the judge or jury in their decision. This information often decides the case, see article for details.

    * Expert in bad faith/wrongful denial of life/health insurance claims.

    * Expert in life/health insurance underwriting material misrepresentation.

    * Expert in medical risk assessment and underwriting issues.

    * Expert in life insurance underwriting policies and procedures.

    * Expert in epidemiology. Previous cases include infectious diseases, occupational and environmental exposures, pesticides and tobacco.

    * Approved life expectancy expert with the U.S. Department of Justice.

    * Active consultant to the life insurance industry conducting cohort mortality studies, and writing underwriting and policy and procedure manuals.

    * Over 100 articles published on mortality research and underwriting.

    * Friendly, clear, concise, objective and quantitative.

    * There is no charge for the initial phone consultation.

    * There is no charge for travel time.

    2/21/2013 · Life Expectancy
    The advantages of a life expectancy using life insurance underwriting and life settlement methods include:

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    Lawrence S. Mayer
    MD, PhD
    712 Fantail Court
    Annapolis MD 21401
    phone: 410-336-2100 or 602-549-4885
    fax: 480-247-4989
    Dr. Mayer is a full-time professor of biostatistics, epidemiology, biomedical informatics, public health and psychiatry. He splits his time between Annapolis/DC and Scottsdale, AZ. He does a limited amount of consulting in epidemiology and biostatistics.

    He focuses on evaluating data, methods and models used in assessing risks. Over several decades he has worked equally for plaintiffs and defense. He trained as a physician epidemiologist and then as a statistician and biostatistician.

    Prides himself on being able to communicate complex ideas in simple language. Prefers problems in which the medical and epidemiological/statistical issues are complex, the methods and models are varied and the data are of limited quality or controversial.

    Has worked on problems in drug and device development, testing and regulation, product liability, patent disputes, occupational and environmental exposures, and medical malpractice.

    Has given about 100 depositions over the last 30 years in a variety of cases ranging from major federal litigation to state personal injury and malpractice cases.
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    Medical Films, LLC
    Dr. Martin E. Gordon
    One McKnight Place, Suite G 51
    St. Louis MO 63124-2014
    phone: 203-507-5551
    fax: 314-991-6656
    Martin E. Gordon, M.D., Clinical Professor of Medicine, Yale School of Medicine, had been a Consulting Gastroenterologist to the Department of Yale University Health Services and many Conn.-based hospitals while in Private Practice during which time he received the American College of Physician’s Laureate Award for patient care.

    Dr. Gordon created and instigated the annual International Digestive Disease Week "Learning Center". Its ongoing format now attracts approximately 14,000 specialists/visitors annually.

    His publications have appeared in the New England Journal of Medicine, Science, and the Am. Journal of Gastroenterology to name a few.

    Dr. Gordon offers Expert Witness and Consulting Services for Plaintiff and Defense.
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    Dr. Jonathan S. Rutchik, MD, MPH
    20 Sunnyside Ave Suite A-321
    Mill Valley CA 94941
    phone: 415-381-3133
    fax: 415-381-3131
    Dr. Jonathan S. Rutchik, MD, MPH, is one of the few physicians in the USA who is board certified in both Neurology and in Occupational and Environmental Medicine. He also has a masters in public health. He has been practicing medicine since 1995 and in California since 2000.

    Dr. Rutchik provides trustworthy litigation support and expert witness services for issues involving Neurological Illness Secondary to Workplace Injuries and Exposure. Dr. Rutchik has had experience with cases related to neurological problems and physical accidents, trauma as well as chemical and pharmacological exposures in occupational and environmental settings. Other services include independent medical examinations, medical record review, and utilization review.

    Dr. Rutchik believes in evidence and scientifically based medicine. His services are available to plaintiffs, applicants, defense attorneys, and insurance companies (approximately 50/50) specializing in Toxic Tort, Personal Injury, and Product Reliability related to neurology.

    Selected Case Examples:
    • Manganese and Tremor/ Parkinsonism
    • Carbon Monoxide and Encephalopathy
    • Organic solvents and Encephalopathy
    • Metals and Neuropathy
    • Brain Injury - Post Concussion Syndrome
  • Pesticides and Neuropathy
  • Mold and Neurological Consequences
  • Return to Work Issues
  • Workers Compensation Issues
  • Product Liability and Neuropathy
  • Offices Locations: San Francisco, Richmond, Petaluma, Sacramento, Arcata (See Location Details in Links Above)

    View Dr. Rutchik's Consulting Profile.
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    Consultant in Environmental Medicine
    4720 Cooper Point Rd NW
    Olympia WA 98502
    phone: 253-229-4088
    fax: 360-866-0715
    Dr. Alan Steinman is an expert in Maritime Medicine with particular emphasis on Sea-Survival, Drowning and Hypothermia. He has served as Surgeon General and Director of Health and Safety for the U.S. Coast Guard, as medical advisor to the Coast Guard's Chief of Operations, and as rescue physician on numerous Coast Guard search and rescue missions. He has an international reputation in hypothermia and cold-water survival.

    Dr. Steinman is widely published in the field of environmental medicine, including a chapter on immersion hypothermia in a leading textbook of emergency medicine. His research into human cold-water immersion and hypothermia merited the prestigious Arnold D. Tuttle Award from the Aerospace Medicine Association. The results from his human hypothermia studies contributed to the basis of current U.S. Coast Guard cold-water survival time charts.

    Dr. Steinman is Board Certified in Occupational Medicine; he is a Fellow of the American College of Preventive Medicine. His Doctor of Medicine degree is from the Stanford School of Medicine; his post-graduate medical training was at the Mayo Graduate School of Medicine and the University of Washington School of Medicine.

    Dr. Steinman has experience in both federal and state courts serving as an expert witness in numerous cases involving sea-survival, drowning, and hypothermia.
    7/4/2002 · Aquatics Safety
    Immersion in cold water is a hazard for anyone who participates in recreational, commercial or military activities in the oceans, lakes, and streams of all but the tropical regions of the world. Recreational aquatic activities include swimming, fishing, sailing, power-boating, ocean kayaking, white-water rafting, canoeing, ocean-surfing, wind-surfing, water-skiing, diving, hunting and the use of personal water craft

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    Ken Zafren, MD, FACEP, FAAEM, FAWM
    10181 Curvi St.
    Anchorage AK 99507
    phone: 907-346-2333
    Ken Zafren, MD, FACEP, FAAEM, FAWM, is a Board Certified Emergency Physician in active practice in Alaska and Clinical Professor and Attending Physician at Stanford University Medical Center in Palo Alto, CA. He practices Emergency and Environmental Medicine, including high altitude medicine and physiology, frostbite, hypothermia, mountain rescue, and medical care in remote areas.

    Dr. Zafren has been named one of the Heroes of Emergency Medicine by the American College of Emergency Physicians. He received the 2008 Mountain Rescue Association Award for Outstanding Contribution to Mountain Rescue Medicine, the 2012 Founders Award of the Wilderness Medical Society, and the 2012 George Longenbaugh Memorial Award. Dr. Zafren currently serves as Alaska State EMS Medical Director and speaks on topics within his expertise locally, nationally, and internationally.

    Litigation Support - Ken Zafren has 28 years of expert witness experience. His services are available to attorneys representing Plaintiff and Defense. Dr. Zafren is available for consultation, chart review, deposition and trial testimony when necessary.

    Areas of Expertise:
    • Myocardial Infarction
    • Stroke
    • Pulmonary Embolism
    • Aortic Dissection
    • Trauma
    • Sepsis
  • Aneurysm
  • Appendicitis
  • Hypothermia
  • Frostbite
  • High Altitude Illness
  • Prehospital Care