About Us
Our Services:
- 24/7 Mobile Drug & Alcohol Testing​
- Random Consortium Services
- Reasonable Suspicion Training
- Driver Qualification Files
- FMCSA Clearinghouse Services
- DOT Physicals
- Customized Pre-Employment Exams
- MCS-150 Bi-Annual Update Services
- MVR & UCR Renewal Services
Diversified Drug Testing & Occupational Services goes beyond making drug and alcohol testing convenient, efficient, and cost-effective. With over 100 years of combined occupational health experience, we are dedicated to providing comprehensive services that meet the evolving needs of our clients.
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We work with companies of all sizes to establish effective and economical drug testing programs, helping commercial drivers and organizations stay fully compliant with all DOT requirements.
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At Diversified, we take pride in employing full-time, certified personnel who are committed to delivering accurate results, prompt service, and exceptional support — ensuring our clients can operate safely, confidently, and in compliance every day.
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Let’s Work Together!
To request more information on our services, pricing or memberships, please complete the form below or contact us directly.
​Tyler McLellan
Random Consortium/Operations
Office: 531-249-5214
Email: tmclellan@diversifieddrugtesting.com
Wendy Clement
Clearinghouse & Driver Qualification Files
Office: 531-249-5916
Email: wclement@diversifieddrugtesting.com
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Margaret Elwell
Billing/Reasonable Suspicion Trainer
Office: 531-249-1064
Email: melwell@diversifieddrugtesting.com ​
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Kris Oneth
Clinic Manager
Office: 531-350-5717
Email: koneth@diversifieddrugtesting.com
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Tom Nesbitt
General Manager
Office: 402-499-1725
