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CHR is the company you call for quality, personalized, and cost-effective corporate health examination and service needs. 
CHR is here, there, everywhere...

"The Industry Leader in Occupational Health Since 1986!"

White Glove Service is Our Standard of Care

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CHR has earned the respect of Fortune 1000 companies with expertise you can trust.

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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 - November 29, 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...

"It was a pleasure working with CHR and your team. Very professional organization that cares about the integrity of the service they provide. I will continue to sing your praises with my future co-workers and organizations that could benefit your business, because I know you are just that great."

"We do so appreciate your support with this funding over the years. You have been a real friend of Occupational Health and Environmental Nurses for a long time."
-AAOHN Foundation

CHR Hosted Seneca Valley of Maryland Dinner Meeting and Educational Presentation

CHR supports the Seneca Valley Maryland Chapter of AAOHN. This event offered accredited CE to attendees on the topic of Biosurety Medical Support for the National Biodefense Analysis and Countermeasures Center, presented by R. Marene Pearl, CRNP / NBACC Biosurety CMA CorpOHS.

First, You've Got to Show That You Care

You can't get people to care about their work until you first show that you care about them. This issue is something that all companies deal with, at one level or another -- issues that get lost in the shuffle, as they get passed from one department to another, or from one person to another.

Sun Protection in the Winter

Sun protection may not be top of mind for outdoor workers during the colder months, but ignoring skin protection in the wintertime is a mistake. To help protect against sun exposure and skin cancer, the Skin Cancer Foundation recommends these steps.

Bill to Address Health Care Workplace Violence Introduced in Congress

The bill directs OSHA to issue a standard requiring health care and social service employers to write and implement a workplace violence prevention plan to protect nurses, physicians, emergency responders, medical assistants, and social service workers from violent incidents.

Holiday Workers have a Right to a Safe Workplace

Companies need to focus on protecting employees during the holiday season. Employers can help keep employees out of harms' way by managing large crowds during sales events, as well as addressing other holiday-related workplace safety hazards.

How to Make Safety Training Stick

We all know that good safety training helps to keep workers safe. But anyone who ever crammed for a test in school knows that something you memorize for just one day is something you'll forget next week. Here are ways to ensure that the safety lessons learned in training stick with your workers on the job.

FDA Updating Medical Device Review Process

At the heart of new actions FDA is taking is a new goal: ensuring the FDA is consistently first among the world's regulatory agencies to identify and act upon safety signals related to medical devices. They said the actions will be unveiled next week.

Decades After Settlement, Tobacco Remains Leading Cause of Preventable Death

This month marks the 20th anniversary of the Tobacco Master Settlement Agreement - the largest civil settlement in U.S. history. Yet, very few states have funded tobacco control programs at recommended levels over the last 20 years. It's up to the will of our representatives to do the right thing.

Occupational Health Research Round-up: November 2018

Stories include cleaning agents and occupational asthma, older workers with chronic disease, and "techno-stress."

Upcoming Conferences

  • NECOEM/MaAOHN, Nov. 29-30, 2018
  • AOCOPM, March 20-22, 2019
  • LAOHN, July 24-26, 2019
  • 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 32 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.