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Industry Experts
Providing Addiction Care and Information You Can Trust

Corporate Leadership

Dr. Thomas Britton
Chief Executive Officer
Chicago, IL
Dr. Lawrence Weinstein, MD, ABHM, FASAM, FAMA
Chief Medical Officer
St. Petersburg, Florida
Dr. Mark Calarco
National Medical Director for Clinical Diagnostics, American Addiction Centers
Brentwood, Tennessee
Stephen Ebbett
Chief Digital and Marketing Officer
San Diego, California
Tamra Hall, PhD, LPCC, LMHC, CAADC, CCS, ACS  
AVP of Clinical Excellence & Quality
Fort Meyers, Fl
Tim Stein
Senior Vice President of Human Capital
Brentwood, Tennessee

Facility Leadership

The public health experts on AAC's facility leadership team are on the cutting edge of addiction treatment standards and best practices.
Barbara Saak
Chief Executive Officer, Laguna Treatment Hospital
Aliso Viejo
Daniel J. McCormick
CEO, Sunrise House Detox
Denise O’Connell
Chief Executive Officer, Recovery First
Hollywood, Florida
Derek Price
Chief Executive Officer, Desert Hope Treatment Center
Las Vegas, Nevada
Dr. Romas Buivydas
Chief Executive Officer, AdCare Hospital
Fred Trapassi
Chief Executive Officer, AdCare Rhode Island
North Kingstown, Rhode Island
Jeff Turiczek
Chief Executive Officer, River Oaks Treatment Center
Riverview, Florida
Mark Stovall
Chief Executive Officer, Oxford Treatment Center
Tyler Harrell
Chief Executive Officer, Greenhouse Treatment Center
Grand Prairie, Texas

Network of Treatment Professionals

Our medical directors and other clinical leadership set the standard of care for AAC facilities to ensure high quality treatment. Our laboratory/diagnostics leadership oversee Addiction Labs, conduct research, and develop products and services to improve patient outcomes.
Dr. Antonio Ocana
Medical Director, Laguna Treatment Hospital
Dr. Evangelos Christodoulou
Medical Director, Sunrise House Treatment Center
Lafayette, New Jersey
Dr. Howard Taylor
Laboratory Director, Addiction Labs
Brentwood, Tennessee
Dr. Michael Murphy, MD, MPH
Medical Director, River Oaks Treatment Center
Riverview, Florida
Dr. Mohammad Alhabbal
Medical Director, AdCare Hospital
Worcester, Massachusetts
Dr. Richard Seely
Medical Director, Recovery First Treatment Center
Hollywood, Florida
Dr. Shahzad Allawala
Medical Director, Greenhouse Treatment Center
Grand Prairie, Texas
Dr. Stephen Pannel
Medical Director, Oxford Treatment Center
Etta, Mississippi
Frances Myers-Routt, LCSW, ACSW
Clinical Director, River Oaks Treatment Center
Riverview, Florida
Kenneth Thomas, LPC, LCADC
Clinical Director, Sunrise House Treatment Center
Lafayette, New Jersey
Melitta Basa, MA, EMDR, LCDC, LPC
Clinical Director, Greenhouse Treatment Center
Grand Prairie, Texas
Michael Coburn
Medical Director, AdCare
Rhode Island
Stefanie Magalong, LPCC
Clinical Director, Laguna Treatment Hospital
Aliso Viejo, California
Yaritza Semenuk, LMHC, MS
Clinical Director, Recovery First Treatment Center
Hollywood, Florida

Business Development Leadership

AAC’s business development team is our boots on the ground in your local community, helping connect people in crises and other situations with addiction rehab treatment when they need it most.
Melissa Tashjian
VP, Business Development
Glastonbury, CT

Veterans Affairs

At AAC, the veteran affairs team is responsible for outreach, advocacy, and oversight of a broad portfolio of resources aimed to support veterans and their families seeking help for their addiction and co-occurring mental health issues, and their families.
Edward “Eddy” Leddy
Military and Veteran Affairs
San Diego, California
Georganna “Georgie” Koppermann
Vice President, Military Affairs
Westerly, Rhode island

Brand & Communications

Joy Sutton
Director of Corporate Communications
Brentwood, TN
Maz Rodriguez
Sr. Public Relations Specialist
Brentwood, TN
Melanie Haber
SVP, Brand & Communications
New York, New York

Credentialed Medical Editors

AAC's editors review content, checking that the information presented is accurate and up-to-date, using credible sources for statistics and medical information.
Look for the medically reviewed badge on articles for information fact-checked by one of our credentialed medical or clinical editors.
Kristen Fuller, MD
Mammoth Lakes, California
Ryan Kelley, NREMT
San Diego, California
Scot Thomas, MD
San Diego, California
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