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Drug Testing Advisory Board Roster

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SAMHSA DTAB Members Roster

Designated Federal Officer (DFO)

Lisa S. Davis, M.S.
Social Science Analyst, Senior Toxicology Policy Advisor
Division of Workplace Programs
Center for Substance Abuse Prevention
Substance Abuse and Mental Health Services Administration
Room 16N02C
5600 Fishers Lane
Rockville, MD 20857
lisa.davis@samhsa.hhs.gov

Chair

Ronald R. Flegel, B.S., MT(ASCP), M.S.
Director
Division of Workplace Programs
Center for Substance Abuse Prevention
Substance Abuse and Mental Health Services Administration
Room 16N01
5600 Fishers Lane
Rockville, MD 20857
ron.flegel@samhsa.hhs.gov

Voting Members

Alison Stockdale
Branch Chief/Drug Program Manager
U.S. Department of the Interior-Interior Business Center
1849 C Street NW
Washington, DC 20240

David Engelhart, Ph.D., D-ABFT-FD
Laboratory Director
Omega Laboratories, Inc.
400 N. Cleveland Avenue
Mogadore, OH 44260

Elizabeth Stuyt, M.D.
Inspired Treatment LLC
10600 County Road 148
Salida, CO 81201

David K. Roberts, Ph.D., F-ABFT
Cascade Toxicology, LLC
1803 N. Woodburn Road
Washougal, WA 98671

E. Lindsey Everson, J.D.
Caldwell Everson PLLC
16309 Jersey Hollow Drive
Jersey Village, Texas 77040

Dawn Hahn, MBA, M.T.(ASCP), D-ABFT
Quest Diagnostics, Inc.
10101 Renner Blvd.
Lenexa, KS 66219

Bryan Ruggery, MFS, D-ABFT-FT
Drug and Chemical Evaluation Section
Drug Enforcement Administration
8701 Morrissette Drive
Springfield, VA 22152

Michael Grommes, D-ABFT-FD
Desert Tox
5425 E. Bell Rd, Suite 125
Scottsdale, AZ 85254-6008

Carl Christensen, M.D.
Vault Workforce
49780 Division Street
Canton, MI 48188

Samantha S. Tolliver, Ph.D.
Office of the Chief Medical Examiner
Forensic Toxicology Laboratory
401 E Street SW
Washington, DC 20024

Ex Officio Members

Brian Zaleski
Specialist – Fitness for Duty/Access Authorization
Office of Nuclear Security and Incident Response
U.S. Nuclear Regulatory Commission
Mail Stop OWF-02H07
Washington, DC 20555-0001

Joseph Kotarek
Branch Chief, Toxicology
Food and Drug Administration, Office of In Vitro Diagnostics and Radiological Health (OIR)
Division of Chemistry and Toxicology Devices (OHT7)
WO66 RM4643
10903 New Hampshire Ave.
Silver Spring, MD, 20993-0002

Bohdan Baczara
Deputy Director, Office of Drug and Alcohol Policy and Compliance
Office of Drug and Alcohol Policy and Compliance
U.S. Department of Transportation
1200 New Jersey Avenue, SE
Washington, DC 20590

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