Hung K Cheung, MD, MPH, FACOEM

Dr. Hung K Cheung, MD, MPH, FACOEM

1421 Clarkview Road, Suite 100
Baltimore, MD 21209-2188
Office: +44332212288883618882
Fax: 888-908-6053

Hung K. Cheung, MD, MPH, FACOEM, is the President of Cogency Solutions. in Baltimore, Maryland. Dr. Cheung is a graduate of Loyola College in Baltimore and received his Medical degree from University of Maryland Medical School. His first residency and board certification was in Internal Medicine from University of Maryland Hospital. He later received his Master’s in Public Health degree from Johns Hopkins University in Environmental Science. He returned for further Postgraduate training (and received his second board certification) in Occupational Medicine from Thomas Jefferson University in Philadelphia. After completing his first medical residency, he worked in the Emergency Department setting (full time and part time) for eight years. For the last fifteen years, since beginning his training at Johns Hopkins, Dr. Cheung has been working full time in Occupational and Environmental Medicine. He has also achieved fellowship status in the American College of Occupational and Environmental Medicine (ACOEM) Society, one of the highest distinctions of achievement in ACOEM.

In June 2000, he served as the State Medical Director for the State of Maryland agencies and State employees. He has worked closely with the State of Maryland (and local municipalities and many large corporations) in building a safe, healthful and productive workplace. Dr. Cheung’s subspecialties are Respiratory Environmental Medicine, Indoor Environmental Quality investigations, Risk communication and Medical Advisory services. He has worked well and collaboratively with management, employees, unions and other stakeholders. He 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. For Environmental Health issues in particular, he believes that there is good science, junk science and those who stretch scientific evidence and/ or scientific techniques. He and his colleagues have expertise in a wide range of Environmental and Occupational health issues including matters related to:

• Legionella, Legionnaires' outbreak investigations
• Asbestos, lead, Benzene
• Various chemical agents/ other solvents,
• Mercury/ Heavy Metals,
• Metal washing fluids,
• Smoke inhalation injuries/ particulate air pollution ,
• Mold/ indoor air quality/ Chinese drywall investigations,
• Innate immunity/ infectious agents,
• Outbreak investigations/ Legionella
• Cancer cluster analysis/ studies,
• Epidemiology and research methods,
• Physical or mental impairments, and
• Validity of the scientific methodologies or admissibility issues.

Dr. Cheung and his colleagues have served as scientific experts in many administrative and legal proceedings, and routinely testifies to State Legislators. Notably, Dr. Cheung was on the Maryland Governor’s Task Force on Indoor Air Quality. The Task Force met for ten months reviewing the latest literature, data, testimonies of experts and patients, best practices, etc and generated a set of recommendations to the Governor and the State Legislature on July 1st, 2002.

Dr. Cheung previously served on the Baltimore City Healthy Homes Advisory Board and is currently a participant in the Greater Baltimore Asthma Alliance, having been invited by the Health Commissioner of Baltimore City. Dr. Cheung is a faculty member of the Department of Environmental Health Science at The Johns Hopkins Bloomberg School of Hygiene and Public Health. He has clinical privileges at Mercy Medical Center in Baltimore, Maryland, and at a Department of Defense (DOD) agency’s Medical department. He evaluates and treats patients at both Mercy Medical Center and the DOD agency’s Medical Center. Recently, he was also the principle investigator of a large peer reviewed multi-facility DOD epidemiology research where over 7 thousand occupants participated from over 350 study areas. He was also appointed to the ACOEM panel for the creation of the ACOEM evidence-based respiratory medicine evaluation and treatment guidelines to be published in the coming year.

Other specialties and Services offered by the firm, Cogency Solutions include: Industrial hygiene, Building science professionals, Environmental Medicine, Occupational Neurology, Infectious Diseases, Clinical Toxicology, Allergy & Immunology, Hematology & Oncology, Research Library services, epidemiology, ambient air & water quality analysis and nurse consultants. Cogency Solutions is accepting engagements. Please feel free to call (443) 322-1228 or email us at with any questions or if you have an issue for which you would like a brief consultation from him or any of his colleagues.

Dr. Yarborough - Solvents, heavy metals, asbestos, cancer clusters, medical epidemiology
Dr. Blink - Industrial processes, OSHA, Health & Safety, Forensics Testing
Dr. Rockswold - Outbreak & Cluster Investigations. Medical Epidemiology, Biostatistics

Hung Cheung, M.D., MPH. FACOEM (888) 361-8882.
President, Cogency
1421 Clarkview Road, Suite 100
Baltimore, Maryland 21209

Areas of Expertise
  • Allergy & Immunology
  • Asbestos
  • Chemicals
  • Construction
  • Coronavirus
  • Environmental
  • Environmental Medicine
  • Environmental Toxicology
  • Hazardous Materials
  • Hazardous Waste
  • Independent Medical Examinations
  • Industrial Hygiene & Mold
  • Industrial Medicine
  • Infectious Disease
  • Insects & Pests
  • Insurance - General
  • Lead Poisoning
  • Occupational Medicine
  • Paint & Coatings
  • Pesticides
  • Pollution
  • Soil
  • Vaccine

Expert Background
Q: Please list your professional accreditations, degrees, licenses, and certificates granted:
A: 2002-Board Certified (recertification 2012) - American Board of Preventive Medicine with specialty in Occupational Medicine

1988-Diplomate/ Board Certified - American Board of Internal Medicine

2003-Fellowship - American College of Occupational and Environmental Medicine

1996 - M.P.H. Degree (Environmental Science)
Johns Hopkins University
Baltimore, Maryland

1985 - M.D. degree
University of Maryland Medical School
Baltimore, Maryland

1997 - 1999 - Postgraduate training
Occupational Medicine Program
Jefferson Medical College
Philadelphia, Pennsylvania

1985 - 1988 Postgraduate training
Internal Medicine Program
Division of Primary Care/Department of Medicine
Baltimore, Maryland

Named “1999 Physician of the Year” by the Maryland Academy of
Physician Assistants

2001 - 2002 Political Appointment - Maryland Governor’s Task Force on Indoor
Air quality and its effects on health & worker productivity. One of two
physicians on this Task Force with final recommendations to the
Governor and Legislature July 2002

2002 - 2003 Member, State of Maryland Committee on Early Return to Work

2002 Medical Advisory panel, PKIDS - a nonprofit organization for families
who have children with infectious diseases.

2003 Volunteer Examiner - ACOEM’s Corporate Health Achievement
Award. Evaluator of Fortune 500 companies’ Corporate Health
Programs and practices for this annual prestigious award.
Q: Please list your affiliations or memberships in any professional and/or industry organizations:
A: Fellow - American College of Occupational and Environmental Medicine (ACOEM)
Treasurer - Maryland Chapter ACOEM 2000 to present
Member - American College of Physicians
Member - Local Chapter American Industrial Hygiene Association
Member - US Green Building Council
Q: Please list any teaching or speaking experience you have had, including subject matter:
A: Dr. Cheung has spoken at many events and venues including:

American Occupational Health Conference - Indoor air Quality
Mid-Atlantic Regional College of Occupational and Environmental Medicine Conference - Tale of two buildings
The regional Safety Council Conference - Occupational Asthma
Maryland Occupational and Environmental Medicine Conference - Risk Communication
Johns Hopkins Occupational Medicine Residency Program - Indoor air quality investigations
The National safety Council - Mold investigations and health effects
The National Association of Counties - Risk Communications
Community Associations Institute -

Q: Have any of your accreditations ever been investigated, suspended or removed? (if yes, explain)
A: No
Q: On how many occasions have you been retained as an expert?
A: Several
Q: For what area(s) of expertise have you been retained as an expert?
A: Environmental Medicine, solvents, industrial exposures, indoor air quality, inhalation, Respiratory illnesses, Cancer/ leukeemia matters, occupational medicine, research designs & methods, study analysis, admissibility/ Frye, benzene and Public Health related issues
Q: In what percentage of your cases were you retained by the plaintiff?
A: Several cases
Q: In what percentage of your cases were you retained by the defendant?
A: Several cases
Q: On how many occasions have you had your deposition taken?
A: I have tesitified in depositions several times
Q: When was the last time you had your deposition taken?
A: two months ago
Q: On how many occasions have you been qualified by a court to give expert testimony?
A: Every
Q: On how many occasions have you testified as an expert in court or before an arbitrator?
A: Several
Q: For how many years have you worked with the legal industry as an expert?
A: Dr. Cheung, his staff and consultants have provided litigation support as an offshoot of their professional work for the last few years
Q: What services do you offer? (E.g.: consulting, testing, reports, site inspections etc.)
A: Consulting, clinical evaluation, diagnostic testing, environmental testing, site inspections, sampling, research development and hypothesis testing, modeling, creation of town hall posters or charts, project management and expert testimony.
Q: What is your hourly rate to consult with an attorney?
A: Please contact for more details.
Q: What is your hourly rate to review documents?
A: Please contact for more details.
Q: What is your hourly rate to provide deposition testimony?
A: Please contact for more details.
Q: What is your hourly rate to provide testimony at trial?
A: Please contact for more details.
Q: Please list any fees other than those stated above (E.g.: travel expenses, copy fees, etc.)
A: Travel and administrative expenses will be invoiced separately.


References upon request.