Meet Our Addiction Treatment Staff - Garden State Treatment Center

Daniel Schaffer

Chief Executive Officer

Daniel's bio is coming soon!

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Dr. Michael Ganon, DO

Medical Director

A 1982 graduate Of UMDNJ/SOM, Dr. Ganon is board certified in Family Medicine. In a busy career spanning over 30 years, Dr. Ganon has taken on many clinical and leadership roles. Dr. Ganon is actively pursuing board certification in Addiction Medicine and is a vital part of the Garden State Treatment Center team.

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Anne Marie Schlomann


Annemarie Schlomann, APN, received her Associate Degree in Nursing at County College of Morris in 1986 and received a Bachelor of Science in Nursing from Excelsior College. She has over 30 years of clinical acute care nursing experience in critical care and emergency medicine. She has served in nursing education and management roles.

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Joel Wishnia

Chief Operating Officer

Joel Wishnia has worked in the treatment field since 2016. Joel grew up in South Florida and returned in 2016, after his own personal struggles with alcoholism and addiction. He is dedicated to helping others find a new way of life.

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Amanda Timonere, LMHC, NCC, CCMHC, MCAP

Chief Clinical Officer

Amanda Timonere has served in the field of Addictions and Mental Health since 2010. Originally from New Rochelle, New York, she obtained her Bachelor’s Degree of Arts in Forensic Psychology with a minor in Counseling from John Jay College of Criminal Justice in New York City.

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Toni Manzione, LCSW, LCADC, ACS, CCS

Clinical Director

Toni Manzione is the Clinical Director at Garden State Treatment Center. Toni graduated with a Masters in Social Work from Kean University and has over 20 years of experience in the addictions and mental health field.

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Paul Cordero

Director of Operations

Paul is a person in long term recovery, and has a passion for helping people with substance abuse disorders achieve sobriety, and maintain recovery.

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Alex Costa

Chief Marketing Officer

Alex Costa, a Massachusetts native, is a person in long-term recovery from Addiction and Alcoholism. His passion and purpose for helping others always remain at the forefront as our Chief Marketing Officer.

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Demetri Botsaris

Sr. Director of Business Development

As a seasoned professional in the behavioral health care space, specializing in substance abuse, Demetri brings a unique perspective to the RBHN family. Demetri's journey to RBHN has been shaped by his own long-term recovery, giving him a deep understanding and empathy for those struggling with substance abuse.

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Jonathan Macciocca

Director of Business Development

Jonathan is a person in long term recovery who’s mission is to help others reach sobriety. He has been working in Business Development since 2017 and has a passion for helping others and their families.

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David Goloski

National Director of Alumni & Family Services

David joined the team here at RBHN to bring aboard his expertise of engagement and structure within alumni programming. RBHN is passionate about the alumni services they provide to their clients and share many of the same visions and goals that David does.

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Sharon Alexander, MA, MFT

Primary Therapist

Sharon Alexander is a primary Counselor for Garden State Treatment Center. She is currently working on her Licensing/certification as an Alcohol and Drug Counselor.

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Kaitlin Rodio

Primary Therapist

Kaitlin Rodio is a primary therapist for Garden State Treatment Center. Kaitlin graduated Caldwell University in 2018 with a Master's of Arts in Counseling, with a Mental Health specialization.

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Mary Culp

Primary Therapist

Mary Culp is a primary therapist at Garden State Treatment Center, where she has served as a team member since 2020. Mary Culp has worked in the arena of Addiction and Recovery since 2013.

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Courtney Williams, LSW

Primary Therapist

Courtney Williams is a Licensed Social Worker and Primary Therapist at Garden State Treatment Center. She graduated from Columbia University School of Social Work with her MSW, specializing in Advanced Clinical Practice.

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William Mahoney

Group Facilitator

I try to bring my 30 plus years of experience with sobriety and close to 19 years of treatment experience to clients on a daily basis so they may enjoy the life of sobriety as I have.  

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Chelsea Koziar

Director of Admissions

Chelsea has worked in the recovery field since 2014 and she aspires to help people find the same quality of care that she received when she first sought help. Her passion is to create an admissions process for the individual and their loved ones that is seamless and as efficient as possible.

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Leanna Kurnel

Alumni Coordinator

An alumni of Garden State Treatment Center, Leanna was born and raised in New Jersey and moved down to Florida for several years to seek recovery. Leanna moved back to the Garden State eventually leading her to work in the recovery field.

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Christina Scherer

Family Services Advocate

Christina began her professional career in behavioral health in 2019, dedicating herself to working directly with individuals struggling with substance use disorders. She now uses her personal and professional experiences to guide families through their loved one’s recovery process.

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Brittany Douglas

Case Manager

Brittany's commitment extends beyond professional duty; it emanates from a genuine desire to see each person under her care thrive. She understands that the path to recovery is not always straightforward and offers unwavering support, guidance, and encouragement every step of the way.

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Daniel Redmond

Continuity of Care Coordinator

Daniel was born and raised on Long Island before moving to New Jersey to seek recovery. Daniel now works in the field that saved his life giving back to others what was once given to him.

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