About Us
Who we are
A luxury drug & alcohol rehab in Mission Viejo built on one belief: treatment works best when it's delivered by people who truly care about the outcome.
A program that cares
We understand addiction — and how to help.
At Hillside Mission, we know how to help you break free from drug and alcohol abuse once and for all. Addiction is different for every client who comes through our doors, which is why we use individualized plans for each and every person.
Our caring, professional staff are dedicated to providing the best possible care to every client — meeting you exactly where you are on the road to recovery.
“We aim to provide treatment that works, by people who truly care about the outcome.”
The Hillside Mission difference
What sets our care apart
Dedicated Staff
On arrival, a comprehensive team of expert professionals gently guides you into the detox process — many with lived recovery experience of their own.
Personalized Treatment
Through a full spectrum of care with experienced medical and clinical professionals, we create a unique treatment plan designed just for you.
Luxury Setting
A comfortable and beautiful environment has been proven to ease the pain of early recovery — so you can focus on healing.
Continuum of Care
Aftercare is essential to success. From day one we work with you to identify aftercare options that build on your new foundation.
Experienced professionals
Meet our team
The people who make recovery at Hillside Mission personal.
Dr. Pamela Tambini
Medical Oversight
Dr. Pamela Tambini is a board-certified physician in Internal Medicine and Addiction Medicine, healthcare executive, and Founder and Chief Executive Officer of The Sober Connection, a physician-led medical services organization supporting behavioral healthcare facilities nationwide.
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Shawn Young
Executive Director
As the Executive Director of Southern California, I have the privilege of leading a team of dedicated professionals across several substance abuse treatment facilities — but at the heart of what I do is people. Whether it’s helping a client take their first step toward recovery or supporting a staff member as they grow into leadership, my passion lies in developing others and building environments where people can thrive.
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Michael McArthur
Nursing Director
I am the Director of Nursing for California facilities, overseeing all medical staff and client care operations. My journey into nursing was inspired by a personal desire to provide hope and compassion during life’s most challenging moments. Watching nurses care for my family during a difficult time, I realized how powerful a little hope and dedicated care can be. This inspired me to pursue a career in nursing, knowing I could make a difference when people need it most.
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Riky Hanaumi
Clinical Director
Erika “Riky” Hanaumi is a Licensed Clinical Social Worker with more than 20 years of experience in behavioral health and addiction treatment. She currently serves as Clinical Director for Quadrant Health Group’s California facilities, where she oversees clinical programming, mentors and supports therapists in developing effective treatment strategies, and ensures the delivery of compassionate, individualized, and clinically sound care. Her leadership focuses on promoting evidence-based practices, clinical excellence, and positive treatment outcomes for individuals with co-occurring mental health and substance use disorders.
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Justin White
Program Director
Justin White serves as Program Director for Quadrant Health Group's Southern California facilities, providing operational leadership and program oversight across the organization's behavioral health treatment centers. In this role, he works closely with multidisciplinary teams to ensure each facility delivers high-quality, individualized care while maintaining excellence in clinical programming, regulatory compliance, and day-to-day operations.
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Jacob Cameron
Client Care Director
Jacob Cameron serves as the Client Care Director at Quadrant Health Group and is a Registered Substance Use Disorder Counselor (SUDCC I). Passionate about helping individuals navigate the recovery process, Jacob is dedicated to creating a treatment experience that is both meaningful and engaging. He believes that lasting recovery is built through genuine connection, compassionate support, and an environment where clients feel valued every step of the way.
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Jeremiah Ross
Nursing Supervisor
Jeremiah Ross, is a dedicated healthcare professional with more than 10 years of patient care experience and a strong background in substance use disorder treatment, client care coordination, and clinical team leadership. As the Nursing Supervisor, Jeremiah plays an integral role in supporting both clients and staff, helping oversee day-to-day clinical operations, medication-assisted treatment (MAT) protocols, documentation compliance, staff development, and multidisciplinary collaboration to ensure the highest standards of care.
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Monica Olivares
Clinical Supervisor
Monica Olivares serves as the Clinical Supervisor for Quadrant Health Group’s California facilities, bringing over 11 years of experience in the behavioral health field and a deeply personal passion for recovery and healing. Throughout her career, Monica has worked across nearly every level of care — including Detox, Residential, IOP, PHP, and Outpatient programs — while holding a wide range of roles from Behavioral Health Technician and Case Manager to Program Manager and Program Director.
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Alanna McMurtrey
Lead Case Manager
Alanna McMurtrey serves as the Lead Case Manager for the Southern California facilities of Quadrant Health Group, where she oversees case management services and supports clients through detox and residential levels of care. In her role, she coordinates client care, provides leadership and clinical support to case management staff, and helps ensure that each individual receives consistent, structured, and personalized support throughout their treatment journey.
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Angela “Angie” Taylor, RADT
Case Manager
Angela Taylor, serves as a Case Manager dedicated to supporting individuals throughout their recovery journey. With experience in the substance use treatment field, Angela is passionate about helping clients navigate the treatment process with greater confidence, comfort, and purpose while fostering personal growth and long-term success. Known for her compassionate and supportive approach, Angela strives to make the recovery experience as meaningful and stress-free as possible. She is committed to helping clients access the resources, guidance, and encouragement they need to build a strong foundation for lasting change. Angela is currently pursuing a degree in Human Services and plans to continue advancing her education to further enhance her ability to serve individuals, families, and communities impacted by substance use and behavioral health challenges.
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BJ Thome
Alumni Coordinator
BJ Thome serves as the Alumni Coordinator for Quadrant Health Group’s California facilities, where his purpose is to ensure that no one feels they have to walk the road of recovery alone. His passion for this work is deeply personal. Having experienced the struggles of addiction firsthand, BJ understands both the courage it takes to begin recovery and the importance of continued support long after treatment ends.
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People helped by #HMR since 2020.
We've helped over a thousand people find their path to lasting recovery from drugs and alcohol. Find out how to begin yours today.
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Your health insurance can pay for rehab.
Most major insurance providers help cover the cost of treatment at Hillside Mission Recovery. Verify your benefits in minutes — it's free, confidential, and comes with no obligation.
In-network & accepted plans
