About John Archer Dandridge Ltd. P.C.
Your Reliable Expert in Substance Abuse Evaluations
John Archer Dandridge Ltd. P.C. is dedicated to providing extensive substance abuse evaluations for individuals in safety-sensitive positions. Our experienced Substance Abuse Professionals (SAP) are qualified to conduct the required assessments following USDOT regulations. We understand the critical importance of these evaluations in maintaining public safety, and our approach combines professionalism with empathy to support each individual’s unique journey.


Take the First Step Towards Compliance
Contact us today to schedule your evaluation or to learn more about our services. Our team is here to support you every step of the way.

Honoring Our Heroes: Special Discounts for Veterans
Veteran Owned and Operated with Pride
At John Archer Dandridge Ltd. P.C., we understand the sacrifices made by our veterans. That's why we proudly offer exclusive discounts to all veterans who choose our services. Our team embodies the values of dedication and service ingrained in military life, ensuring that you receive the highest quality of assistance tailored to your needs. As a veteran-owned and operated business located in the heart of Detroit, we carry our commitment to service into everything we do. We invite all veterans to come and experience the difference that a team with genuine understanding and respect can make. Thank you for your service, and we look forward to serving you!