“The road to recovery is challenging. Period. But the comfortable setting, caring staff and amenities allowed me to focus on myself and my recovery.”Jessica, CSRI Alum

About Clinical Services of Rhode Island (CSRI)

About Us

At Clinical Services of Rhode Island (CSRI), we provide our Intensive Outpatient Program (IOP) treatment services for adults struggling with drug and alcohol addiction. For the clinically appropriate client, this flexible program offers morning and evening treatment sessions Monday through Thursday that can help the client in fulfilling everyday family, employment, and community obligations while seeking substance abuse treatment.

AAC Leadership

Our Executive Management Team is based in our corporate offices in Brentwood, Tennessee (outside of Nashville). Our leadership is represented by professionals with decades of experience working in addiction treatment, healthcare management, and operation of treatment facilities. Our executive team brings together the best practices and industry expertise of treatment facility operations management and effective clinical staffing to make AAC a premier provider of addiction treatment.

Clinical Service of Rhode Island Tour

Greenville, RI

Portsmouth, RI

South Kingstown, RI

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Clinical Services of Rhode Island

Our team is comprised of highly qualified, passionate individuals with experience in outpatient treatment.


Peter Letendre, MA, CAGS, LMHC, LCDP, Chief Executive Officer and Clinical Director

Peter became interested in helping individuals who suffer from the disease of addiction, and mental health disorders, through his own recovery from drugs and alcohol, a process he began in 1987. By 1989, Peter was working with at-risk youth in the first of his many roles in prevention programs. For more than 25 years, Peter has treated clients in a variety of inpatient and outpatient behavioral health settings while maintaining a thriving private psychotherapy practice. Peter’s depth of experience with a diverse clientele has helped prepare him to be the leader in the industry that he is today. He graduated with High Honors from Rhode Island College in both his Master’s Degree Program in Mental Health Counseling and his Advanced Graduate Degree Programs. Peter is a licensed alcohol and drug counselor, as well as a licensed mental health counselor. He has specialized training in co-occurring disorders, motivational enhancement, and clinical supervision. In addition, Peter has also had extensive training and experience in executive leadership, business development, and senior management.


Tammi Dutchover, MS, LCDP, Program Director

Tammi is a Licensed Chemical Dependency Professional with a Bachelor’s Degree in Criminal Justice and a Master’s Degree in Addiction Counseling. A former Texas Deputy Sheriff with extensive experience in the criminal justice system, Tammi has been a Domestic Violence 101 instructor and taught at Bryant University for the Public Safety Academy for Colleges and Universities. Prior to joining CSRI, Tammi owned her own private practice. Just as with most professionals in the substance abuse treatment field, Tammi has been affected by the disease of addiction and its impact on her family. In 1983, her mother lost her only brother at the age of 24 as he battled to leave drugs behind. She also watched her grandfather struggle with alcohol addiction and lost her father at the age of 36 to cirrhosis of the liver. Her experiences have informed a treatment approach that provides both support and practical feedback to help clients address current life challenges related to the disease of addiction. Applying a highly personalized approach with compassion and understanding, Tammi provides individual, couples, and family counseling that helps clients attain the personal growth they’re striving for.

Joann Esposito

Joann Esposito, BS, LCDCS, Clinician

Joann is an Outpatient Clinician and IOP Intensive Outpatient Program Facilitator at CSRI. She also conducts a Women’s Group, A Women’s Way through the Twelve Steps. She began her career in 1990 as a Crisis Intervention counselor. In recovery herself, Joann passionately believes that the only cure for alcohol and drug addiction is complete abstinence from all mood-altering substances. Joann pursued her Bachelor’s degree in psychology/social work, graduating with highest honors from Springfield College in Manchester, New Hampshire.

Joann holds a license as a Chemical Dependency Clinical Supervisor (LCDCS). Throughout her career, she has worked in a variety of settings including detoxification, inpatient and outpatient care, methadone maintenance, and ex-offender re-entry transitional practices.


Ed Ferreira, AA, Counselor

Ed Ferreira’s passion for recovery began in 2006, inspired by the positive impact other clinical professionals had on his personal journey. Ed started as an intern at CSRI’s Portsmouth location in 2013. Now he’s an integral part of the Portsmouth clinical team, conducting intake appointments, facilitating IOP groups, and seeing individual outpatient clients while working to further his education. Ed credits his growth in the field to his ability to build therapeutic alliances and work collaboratively with clients. He is excited about the future of recovery and the opportunity to be involved in something bigger than himself.


Peter Grayson, LCDP, Clinician

As a Licensed Chemical Dependency Professional, Peter is passionate about giving back what he was fortunate enough to receive from others in his recovery journey. Stemming from a solution-based therapeutic approach, the Five Essential Elements of recovery, Peter’s therapeutic focus is on cultivating passions in life, feeling connected to things outside of us, and most importantly, gratitude. Peter provides individual and group counseling in addition to facilitating the healing of the family unit and maintaining healthy relationships as an integral component of treatment.