About Eagle Onsite


Provide employers with reliable, affordable, and superior quality onsite medical surveillance and compliance services nationwide.

Eagle Onsite is available 24/7/365 to assist employers with occupational medical surveillance testing and compliance support with OSHA/MSHA/FRA regulations. We are a privately held company headquartered in Houston, Texas, offering a full range of premier onsite mobile occupational medical surveillance services coast-to-coast.


  • Reduce Worker Time Away From Work

    When scheduling our mobile clinic to your jobsite, worker lost production time is dramatically reduced or eliminated. Travel risk of your employees going to and from their workplace for testing is eliminated. Your workforce benefits from the convenience of onsite mobile clinic availability, and your testing initiatives are completed in an efficient, time-saving manner.

  • Ensure Compliance

    Our onsite services and post-testing reporting are designed to help our customers remain in compliance with regulations affecting their workforce.  Our physicians and audiologists are experts in guiding our customers through enterprise risk management, compliance audits, and injury case management.   

  • Workforce Centered

    Your employee experience matters to us.  Our mobile units and workflows are designed to minimize production interruption while maximizing employee comfort throughout the testing process. The entire Eagle Onsite team is well-trained and able to answer any questions your workers have about their exam results.

Our History

1993 - 2005
2005 - 2023
2023 - Current


Johnny Sanders originally began his career as an industrial audiologist by establishing Hearing Testing, Inc. (HTI) in 1979. HTI was one of the first mobile testing companies in the United States. He was instrumental in the design, actual construction, and operation of the mobile units. 

Hearing Conservation Standard

During the formative years of HTI, Johnny was also very active professionally by contributing to OSHA’s information gathering process in the development of the 1910.95 Hearing Conservation standard with the final version becoming law on March 8, 1983.  As part of the regulation, the Council of the Accreditation of Hearing Conservationists (CAOHC) was established to train and certify individuals in hearing testing as well as complying with the regulation.  Johnny is one of the original Course Directors for CAOHC and has trained and certified thousands of individuals since 1983.   

Services Expand

Johnny was convinced by existing clients to expand beyond onsite hearing testing to include a full range of occupational screening and surveillance exams.  He began designing and building mobile units with chest x-ray, physical exam rooms, and other space to accommodate multi-phasic exam components such as blood draw, vision screening, hearing testing, respirator fit testing, electrocardiograms (ECG), vitals, spirometry, drug screen collections and more. 

Name Change

Johnny changed the company name to Health Testing, Inc. to more accurately represent the services HTI offered. 

HTI Sold

Johnny sold HTI and dabbled in various ventures until eventually forming Health Testing Solutions, LP in 2005.

Health Testing Solutions

Health Testing Solutions, LP (HTS) was formed in 2005 between Johnny and his son, Darren Sanders.  Together, they continued where Johnny first started by offering onsite mobile occupational medical screening and surveillance services to customers throughout the country.  

Current Operations

The HTS team acquired Medical Plaza Mobile Surveillance and has rebranded as Eagle Onsite. Eagle Onsite enjoys partnerships with many Fortune 500 companies as well as smaller and mid-size companies across the United States representing a variety of industries including manufacturing, energy, transportation, packaging, healthcare, and many more.

Explore our Services

Eagle Onsite provides industrial clients with a full range of onsite occupational medical surveillance screening services. Click below to learn more about the services we offer to help your team remain in compliance.

Mobile Hearing Testing
Respirator Medical Evaluation
Respirator Fit Testing
Physical Exams
Pulmonary Function Testing
Professional Supervisor Services