Credentials & Qualifications

Our interdisciplinary team of professionals includes the following:

  • A consulting physician/addiction specialist
  • Licensed psychologists, therapists and counselors
  • People who are living with addiction

Wayne Thurston, Psy.D.

Psychologist – Executive Director, Olympia House

Wayne Thurston
Dr. Wayne Thurston is a licensed clinical psychologist who has worked in the fields of addiction, mental health and co-occurring disorders for close to two decades. Prior to his development of Sonoma Recovery Services LLC and Olympia House, he worked for several years in the nonprofit sector. Most recently, he was the Senior Vice President of Clinical Services at a large nonprofit agency. This position required him to oversee numerous programs that helped individuals struggling with addiction, mental health issues, and homelessness. Throughout his work with the nonprofit, Dr. Thurston maintained a private practice in Marin County, specializing in the care of individuals who struggle with both addiction and co-occurring disorders.

Dr. Thurston’s many experiences over the years, working with different individuals and programs, provided a thorough understanding of what treatments are truly helpful for people struggling with addiction and mental health issues. Dr. Thurston’s past experience and expertise in the field ultimately led to his vision for Olympia House. That vision includes the view of each individual resident as a whole person rather than a set of symptoms; an integrative and holistic style of treatment that uses a variety of therapeutic modalities; and the development of a treatment plan that truly caters to the individualized needs of each resident of Olympia House.

Senadhi Parakrama, Psy.D.

Psychologist-Clinical Director, Olympia House Programs

Senadhi Parakrama
Dr. Senadhi Parakrama is a licensed clinical psychologist who has been working in the field of mental health and co-occurring disorders since 2001. Throughout the years, Dr. Parakrama has worked in a variety of settings with diverse groups of people, all struggling with addiction, mental health issues, and/or co-occurring mental health and substance abuse issues. He began working in programs and facilities in Manhattan and upstate New York before moving to the Bay Area to complete his doctorate at the Wright Institute in Berkeley. Some of the settings he has worked in include group homes, rehab centers, long-term residential facilities, crisis residential facilities, inpatient hospitals outpatient clinics, jails, and prisons.

Dr. Parakrama’s past experience and continuing work have demonstrated the importance of developing strong support networks and individualized treatment plans for those struggling with addiction and co-occurring disorders. In addition to working at Olympia House, Dr. Parakrama also has a small private practice in the East Bay, provides clinical education and supervision to doctoral students in training, and works with the A Home Within program to provide some long-term, probono work for foster children.

Mei-Li Hennen, Ph.D.

Post-Doctoral Fellow – Program Director, Olympia House Residential

Mei-Li-HennenDr. Mei-Li Hennen is a post-doctoral fellow who has worked in the field of mental health serving the disenfranchised and persons with severe mental health and addiction issues for over 20 years in the nonprofit sector. Dr. Hennen has experience in clinical and leadership roles with those struggling with co-occurring disorders in a variety of mental health systems in Washington State and Northern California. This experience has influenced her commitment to and passion for improving the health and well-being of those struggling with co-occurring disorders.

Dr. Hennen has been with Olympia House since 2013, providing Dialectical Behavior Therapy (DBT) groups and is excited to be a part of an organization that is committed to helping people live again with dignity and compassion.

Paul Manning, Psy.D.

Post-Doctoral Fellow – Olympia House

Dr. Paul Manning is a post-doctoral fellow who has been working in the mental health field since 2008. Dr. Manning has worked with clients from diverse cultural backgrounds in a variety of settings, focusing on clients who are struggling with addiction and/or mental health issues.

In addition to working in community mental health, Dr. Manning previously provided outreach therapy to children and families in the South Boston metro area and outreach mental health care for the Contra Costa County homeless community. Dr. Manning works to ensure personalized treatment with interventions that are manageable, realistic, and successful. Dr. Manning’s goal in treatment is to provide an environment where clients and their families feel cared for, heard, and respected while working toward their therapeutic goals.

Wendy Walsh, Ph.D.

Psychologist-Olympia House

Wendy Walsh, Ph.D. is a licensed Clinical Psychologist who has more than 20 years of counseling and leadership experience in the treatment of addictions. Dr. Walsh graduated from the California School of Professional Psychology with a Ph.D. in Community/Clinical Psychology in 1995. Beginning in 1997, Dr. Walsh served for several years as the Drug Abuse Program Coordinator at the Federal Correctional Institute, Safford Arizona. After returning to California she worked for managed behavioral health care, and then a number of California Correctional Institutions while also maintaining a private practice. Beginning in 2012 Dr. Walsh initially filled the role of Assistant Clinical Director and then Clinical Director of a number of addiction treatment centers in the Los Angeles area. Dr. Walsh recently returned to Northern California where she previously completed her undergraduate education.

Dr. Walsh is also skilled in treating the co-occurring disorders that often accompany chemical dependency and working with families of our residents. Her approach to treatment utilizes Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT) and a family systems approach. Dr. Walsh also specializes in meeting the specialized needs of our LGBTQ residents. In addition to her work at Olympia House she also serves as a board member for Positive Images, which addresses the needs of LGBTQ youth in Santa Rosa, California.

Andrea Clark, Psy.D.

Psychologist – Director of Outpatient Services

Andrea-ClarkDr. Andrea Clark is a licensed psychologist who has worked in the field of mental health and co-occurring disorders since 2004. Prior to working at Olympia House, she was a Regional Director of Mental Health Services for a large nonprofit organization. In this position, Dr. Clark provided clinical and programmatic leadership to staff in mental health, addiction, homeless shelter, case management, crisis stabilization, and outpatient settings serving disenfranchised populations.

Dr. Clark’s work in diverse community settings has given her a comprehensive understanding of the impact of addiction and mental health disorders on individuals and families. Through evidenced-based therapeutic interventions and educational experience, Dr. Clark’s approach serving individuals comes from a collaborative, client-centered orientation that supports each person in their recovery process. At Olympia House, Dr. Clark empowers individuals to pursue heightened self-awareness and increased motivation to change.

Sarah Tucker, M.S.

Licensed Marriage and Family Therapist-Olympia House Intensive Outpatient Program

Sarah Tucker is a licensed Marriage and Family Therapist. She received her Masters of Counseling Psychology degree from the Dominican University of California.

With five years of experience in the field of counseling therapy, Sarah has discovered her passion and specialization in the area of addiction and recovery. Through training and practice in diverse internship programs, Sarah has refined her skills in client-centered therapy and evidence-based practices including: Cognitive Behavioral Therapy, Dialectical Behavior Therapy, Strengths-Based Therapy, and Dance/Movement Therapy approaches. Sarah facilitates several skills-based didactic groups in addition to working with individuals and families.

Ed Padilla, CADC/CAS

AOD Counselor-Olympia House Intensive Outpatient Program

Ed Padilla is a certified addiction specialist who has worked in the field of addiction for 28 years. He has worked in hospitals and residential treatment facilities where he has helped hundreds on individuals struggling with addiction. Ed has also worked within the criminal justice system. He was hired by the federal government to be on the treatment team to create Court of Hope later known as Drug Court in San Francisco and provided counseling services through the San Francisco Sheriff’s office. Ed was also hired by the county of Maui to establish a residential treatment program for individuals struggling with Methamphetamine and Heroin addiction.

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