There are a lot of buzzwords thrown around by different rehabs and addiction treatment centers when describing themselves. Words like “premier”, “world class”, or “luxury” are often used as if rehabs are describing a 5-star hotel experience rather than a healthcare facility meant to treat a complex, chronic illness.

Here at Maryland Addiction Recovery Center, we know that high quality, comprehensive care at any treatment center or rehab facility is due only to the quality, expertise and compassionate care delivered by the staff. Ownership, leadership, therapists and counselors, doctors and nurses, admissions, administrative and front-line recovery support staff, and that staff’s approach to treating addiction, is where a patient and their loved ones can find the quality of care that will be received.


Therefore, we believe it is important for any individual seeking help for their substance use disorder or a family member or loved one seeking help for a loved one’s addiction know the staff of the addiction treatment facility and who is delivering the life-saving, life-sustaining care.


Maryland Addiction Recovery Center staff:


Sam Bierman, CAP, ICADC, CNDAI

Co-Founder, Executive Director


Zach Snitzer

Co-Founder, Corporate Director of Marketing


Dustielynn White

Director of HR and Compliance


Jennifer Richards, PsyD

Clinical Director


Arielle Seidler, LCSW-C

Family Therapist


Corinne Burnett, LCSW-C

Primary Therapist


Megan O’Shea, LCPC

Primary Therapist


Alison Merrifield, LCPC, CAADC

Primary Therapist


Tara Pistorio, LCPC, CAC-AD

Primary Therapist


Amber Berkhart, LGPC

Primary Therapist


Kimberly Bonsiero, LCSW-C

Primary Therapist


Erica Mullinix, LCPC

Primary Therapist


Laura Kendal, LGPC, CAC-AD



Kyle Aaron, M.Ed, LCPC

Vocational Therapist


Sarah MacDonald, CSC-AD

Collegiate Recovery Specialist


Alfred Forrester, MD, LFAPA

Medical Director


Douglas Woodruff, MD

Staff Psychiatrist


LaShanda Roberts, MSN, BSN, RN, FNP-BC

Nurse Practitioner


Colleen Waterfield

Medical Services Coordinator


Maura Maguire

Director of Admissions


Amanda Winfield, ADT

Intake Specialist


Tim Holt, MSW

Intake Specialist


Brent Coleman, RPS

Director of Support Services


Jacqueline Neubauer, RPS

Evening TA Supervisor


David Magill

Weekend TA Supervisor


Natasha Feldstein

Weekend Evening TA Supervisor


Corey Long

Support Services Specialist


Mallorie Schwartzman

Director of Business Development


Ryan Burton

Community Relations Specialist


April Weider, SHRM-CP

HR Specialist


Erin Kelley

Compliance Specialist


Samantha Cyhanick



Terri Williams

Executive Assistant


Kim Letke

Office Manager


Chris McDuffie

Maintenance Supervisor


Therapeutic Assistants

  • Kendall Arnold
  • Greg Buchser
  • Clare Cardoni
  • D.J. DiPetrillo
  • Tony Easter
  • Krystal Grudinsky
  • Jessica Jackson
  • Michael James
  • Michael Lamb
  • Sean O’Brien
  • Megan Sima
  • Piper Tasoulas


It is through the commitment, compassion, experience, and expertise of the staff here at MARC that we are able to deliver the comprehensive care needed to overcome addiction to patients and their families. If we are a “premier” facility, it is due to having a premier staff. If we are “world-class” it is because our staff here at Maryland Addiction Recovery Center is world-class.


If you or someone you know needs help for addiction or co-occurring disorder issues, please give us a call. Maryland Addiction Recovery Center offers the most comprehensive dual diagnosis addiction treatment in the Mid-Atlantic area. If we aren’t the best fit for you or your loved one, we will take the necessary time to work with you to find a treatment center or provider that better fits your needs. Please give us a call at (410) 773-0500 or email our team at For more information on all of our drug addiction, alcohol addiction and co-occurring disorder services and recovery resources, please visit our web site at