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About Us
About Criterion Services, Inc
Criterion Services, Inc. is a full-service occupational health and testing clinic based in Johnson City, Tennessee, serving clients across Northeast Tennessee. We specialize in DOT and non-DOT drug testing, pre-employment physicals, lab services, DNA and paternity testing, ChildGuard testing, post-accident and return-to-duty testing, HPEs, and random testing program management (TPA services). Attorneys, trucking companies, HR departments, manufacturing companies, and families rely on us for accurate, efficient, and confidential results. Unlike large clinics, we offer same-day appointments, short wait times, and personalized care, all while maintaining strict compliance with FMCSA, OSHA, and SAMHSA guidelines. At Criterion Services, our mission is clear: Relate. Educate. Motivate. Advocate. Whether you need workplace compliance solutions, legal case support, or personal testing, we are your trusted partner in occupational health and testing.
Meet Us!
William Fahey, Owner,
Certified Collector
Bill has been in the alcohol and drug testing setting for over 15 years. He is one of the most knowledgeable testers and interpreters in the Tri Cities area. He is a strong advocate for recovery from substances and one of the greatest humans to make an impact in our client's lives.
Sherry Barnett, MSN, FNP-BC
I have been a Nurse Practitioner for over 15 years and celebrate 11 years in recovery from substances. My goal is to make every interaction with our clients a positive one. I love working on interpretation and toxicology of alcohol and drug tests and I love my job! I am a nerd and get great joy out of digital art, building websites, social media, and office supplies. Hopefully, by November 1st, we will have primary care and telehealth in place.
I can guarantee a same day appointment with the best customer service you will ever receive.