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CHR is the company you call for quality, personalized, and cost-effective corporate health examination and service needs. 
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"The Industry Leader in Occupational Health Since 1986!"

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(800) 867-0933


1375 Piccard Drive

Suite 275

Rockville, MD 20850

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Training Courses

AAOHN: Respiratory Protection Education Program for Healthcare Workers - Available at No Charge.

Online Learning



Commercial Driver Medical Examiner Online Training via ACOEM




Spirometry, Spirometry Refresher, Respirator Fit-Testing Training Courses


Online Courses:

Spirometry Refresher

Spirometry Training


More Information:

Dr. Mary Townsend



CAOHC Certification
CAOHC Re-Certification
NIOSH Certification


Course Collections:



The DOT Examiner's Most Trusted Resource! For a full listing of our books visit OEM Press.

Medlock Consulting is a physician search firm dedicated to locating, evaluating, and facilitating the placement of quality physicians in superior environments. To us, this means never taking shortcuts and always maintaining professional and personal integrity.


Nyla Medlock

Medlock Consulting

Phone 806-744-5250

Cell 806-239-NYLA(6952)

"Defining the Future of Physicians Globally"

Email Nyla


International Safety Systems, Inc. (Global EHS Service Provider)
New: Webinar Brochure



Occupational Health Connections, Inc. (OHC) is a distinguished leader in occupational and employee health staffing and recruitment. For job opportunities, please visit: OHC website



Visit Relief EHS, LLC
Relief EHS is uniquely qualified to provide answers to your environmental health & safety (EHS) questions, make it easier for your business to comply with regulations, and help you achieve EHS goals while minimizing costs and potential liability.



PKB Consulting, LLC
Patricia K. Bertsche, PhD, FAAOHN - Occupational Health & Wellness Consultant, Leader in Global Occupational Health Program Development & Evaluation - Email Pat



CHR Newsletter - August 23, 2018

The quality of CHR's services and the services provided by the clinics in our network is very important. Thank you for your feedback and support. Our clients say it best...

"I truly love working with CHR and the level of expertise you give to us for support."

Vaccines Have Helped Reduce Rate of Death and Disease in the U.S.

Although an estimated 40,000 to 50,000 adults in the U.S. die from vaccine-preventable infectious diseases or their complications each year, the American Lung Association (ALA) says vaccines have helped reduce the rate of death and disease in the United States.

Occupational Respiratory Illness: NORA Identifies Research Priorities

Respiratory disease in workers resulting from exposure to occupational contaminants is a major area of research that was recently addressed by the National Occupational Research Agenda (NORA) in its draft National Occupational Research Agenda for Respiratory Health (Agenda).

Are Office Doctors the New Golden Trend in Employee Benefits?

The idea of worksite clinics is nothing new. But with big names such as Amazon and Apple now looking into building on-site health facilities for their employees, other companies are seeing a new standard in employee health benefits.

Workplace Violence Toolkit Released by Oregon Hospitals Association

The Oregon Association of Hospitals and Health Systems has produced a toolkit to help hospital leaders and others prevent and reduce violence against hospital workers. It was developed in collaboration with other health care and labor stakeholders.

Drugged Driving Complicates Anti-Impaired Driving Message

The emerging trend of drug-impaired driving will be paired with the NHTSA usual effort to combat drunk driving in a new series of public service announcements that will run through one of the deadliest times on U.S. roads - the Labor Day holiday weekend (Aug. 15-Sept. 3).

OSHA Bulletins Address Respiratory, Hearing Protection for Temp Workers

Staffing agencies and host employers share responsibility for protecting temporary workers from respiratory and noise hazards, according to separate bulletins recently released by OSHA as part of its Temporary Worker Initiative.

Service Industry Work Can Increase Depression Risk

Dealing with a fickle public and relying on gratuities for a significant portion of your income is "precarious" work that's associated with higher risk of stress, depression, and sleep problems, according to new research.

Get Up to Date with New NFPA Requirements

Hazards never stand still - and neither do the NFPA's standards for preventing them. Is your company up to date on the latest requirements for arc flash and flash fire protection?

Occupational Health Research Round-up: August 2018

Stories include cardiovascular disease in women firefighters, younger men at higher risk of burnout, permanent night work and aggressive prostate cancer "may" be linked, and more.

Upcoming Conferences

  • GAOHN, Sep. 6-8, 2018
  • IAOHN, Sep. 14, 2018
  • NCAOHN, Oct. 31-Nov. 2
  • MAOHN, Nov. 1-2, 2018
  • OAOHN, Nov. 1-3, 2018
  • NECOEM/MaAOHN, Nov. 29-30, 2018
  • More to come; Stay tuned...

Job Openings

Occupational Health Triage Call Center Lead Nurse (Night Shift Preferred)

CHR is seeking an experienced Occupational Health Registered Nurse to help establish and lead a telephone triage call center. For further information, please contact

WBENC-Certified Women's Business Enterprise

Email Rhett Suhre for More Information.

CHR is Celebrating 31 Years!

CHR is a TRAC-Certified Vendor
Learn more about TRAC

Health and Safety Works, LLC

Health and Safety Works, LLC provides training, consulting, and research services in support of Occupational Health (OSHA), Transportation Health (FMCSA) and Health and Wellness. Read more about Health and Safety Works or email HSW Founder and CEO, Elaine M. Papp RN, MSN, CM, COHN-S FAAOHN.