Dr KEITH MARSHALL

Dr. Keith L. Marshall, Psy.D., M.H.D., MAC, SAP (#175165), is a DOT-qualified Substance Abuse Professional, Master Addiction Counselor, award-winning author, clinical supervisor, and Founder and Chief Executive Officer of Dedicato Treatment Center, a California Department of Health Care Services (DHCS)-certified and Joint Commission-accredited behavioral health organization.
With nearly two decades of experience in behavioral healthcare, substance use disorder treatment, clinical supervision, and executive leadership, Dr. Marshall brings extensive academic research in human development, addiction, psychopathology, and the psychological and environmental factors influencing substance use and recovery. His doctoral research and clinical experience provide a strong foundation for evidence-informed assessments, individualized treatment planning, and sustainable behavioral change.
A multiple-time International Impact Book Award recipient and 2023 Presidential Lifetime Achievement Award honoree, Dr. Marshall is the author of
From Dumpster to Doctor
 and
Factors of Transformation
. His published work has also received professional editorial reviews from Kirkus Reviews and Clarion Foreword Reviews.
In addition to providing confidential DOT SAP evaluations, return-to-duty compliance evaluations, and follow-up testing recommendations under 49 CFR Part 40, Dr. Marshall and Dedicato Treatment Center are available to collaborate with other qualified SAP providers by offering individualized substance use disorder education, counseling, and treatment services for employees referred through the DOT return-to-duty process.
His professional approach emphasizes clinical integrity, regulatory compliance, accountability, recovery, public safety, and successful workforce reintegration. Services are available by appointment, including in-person evaluations in Southern California and remote services where professionally and legally permitted.