




Our Philosophy
Our philosophy is to equip our clients with the knowledge, life skills, spiritual tool kit and emotional support to produce a meaningful character transformation necessary for sustained long-term recovery. Together we work diligently with our clients to uncover, discover, and discard; to unearth the authentic self in each client, healing the underlying causes of addiction.
With a client-focused philosophy that acknowledges and embraces the unique strengths, experiences, and needs that each person brings to the treatment process, New Leaf Detox and Treatment is uniquely prepared to provide the life-changing care that will empower men and women to overcome their chemical dependence and mental health issues and make the other changes that will support their successful pursuit of happier and healthier futures, free from the constraints of addiction. about us
We view sobriety and recovery as a process of change and transformation. Our name, New Leaf, is a metaphor for the change and transformation that begins for our clients when they commit to walking through our doors, and for our commitment to helping them turn over a new leaf, in all the ways we can.
Deeply sensitive to the challenges and the courage it takes for someone to walk through our doors.
We offer professional knowledge, understanding, respect, caring, and support, and commit to helping them through their journey to reclaim their lives through addiction treatment best practices and exemplars in evidence-based standards of care.
We see each person as an individual, with their own narrative and backstory, with unique and singular needs that need to be met with specialized, individualized treatment. We listen to your needs to help you begin your journey to full recovery.
Our Vision
We wish for everyone who walks through our doors to receive the full array of tools, specific treatment, and vital resources they need to live their best life, free of pain and addiction.
Experienced Professionals Dedicated To Your Success
Our Staff
Dr. Sanjai Thankachen
Medical Director

Dr. Sanjai Thankachen graduated from Adichunchanagiri Institute of Medicine in 2000. He completed his residency in psychiatry in 2008 from Creedmoor Psychiatric Center in New York, where fifty percent of his rotations were at Columbia Presbyterian Hospital. After his residency he worked at Ventura County Medical Centers in an adult out-patient setting and now lives in Orange County, California. Dr. Thankachen is currently working with Pacific Neuropsychiatric Specialists in an out-patient practice, as well as working at multiple in-patient psychiatric and medical units bringing his patients the most advanced health care treatment in psychiatry. Dr. Thankachen sees patients with an array of disorders, including depression, bipolar illness, schizophrenia, anxiety, and dementia-related problems. Dr. Thankachen is also involved in professional organizations and societies in good standing including the American Psychiatric Association, Indian Medical Association, and the Karnataka Medical Association.
Dr. Tami Tucker
Clinical Supervisor

Dr. Tami Tucker has been a Licensed Clinical Psychologist and Organizational Psychologist for over 20 years. She has been working with clients struggling with addiction in both inpatient and outpatient settings for the length of her career. She applies her unique skill set to not only treating those with co-occurring disorders, but as a consultant in helping organizations develop and improve programs. She mentors, trains, and supervises interns as they earn their clinical hours toward being licensed. Her approach to supervision and training is to ensure that these therapists thoroughly understand the standards of care in treating addiction and co-occurring disorders and that they provide state-of-the-art therapy techniques/approaches so that their clients have the best chance to not only recover from their addiction but optimize their lives.
Josh Hamburg
Chief Executive Officer

Alex Hall
Chief Operating Officer

Ashley Gerken, LPCC
Clinical Director

Ashley has worked in Behavioral Health treatment since 2013. She obtained her Bachelor’s Degree in Criminal Justice and Psychology at Urbana University after obtaining a lacrosse and academic scholarship. She completed her Master’s in Forensic Psychology and has obtained full licensure as a Professional Clinical Counselor. She is currently completing a doctorate degree in Applied Clinical Psychology (PsyD) at the Chicago School of Professional Psychology. Ashley has worked as a Primary Therapist since 2015, with a concentration on treatment of substance abuse, mental health, and trauma. She is trained in somatic trauma approaches, EMDR, and is always open and seeking additional training to best provide an individualized treatment for each client that she works with. She is passionate about working with those suffering with addiction as well as volunteering with veterans as well as LGBT+ community.
David Christian (DJ)
Admissions Director

DJ is a dedicated Admissions Director with a deep passion for helping individuals on their journey to recovery. With a compassionate approach and a commitment to making a difference, he works tirelessly to connect people with the resources they need to reclaim their lives. Outside of work, DJ enjoys spending time on the golf course, where he finds both relaxation and challenge. Above all, he cherishes his role as a father to his 11-year-old daughter, embracing every moment of fatherhood with love and dedication. His commitment to both his family and the recovery community reflects his unwavering belief in growth, transformation, and second chances.
Drake Coomer, CADC II
Executive Director

Drake serves as Executive Director, overseeing operations and strategic initiatives to ensure excellence in behavioral health and addiction treatment. With over six years of experience in the industry, he brings extensive expertise in program management, clinical operations, and client-centered care. A Certified Alcohol and Drug Counselor (CADC II), Drake is deeply committed to guiding individuals toward lasting recovery. Originally from Kentucky, he relocated to California to advance his career in addiction treatment. His deep understanding of the field, combined with a strong commitment to clinical excellence, ensures that individuals seeking help receive the highest standard of care. Known for his leadership and compassionate approach, he has been instrumental in fostering a culture of excellence, driving successful client outcomes, and strengthening alumni engagement.
Monica Diaz - SUDRC
Program Manager

Monica Diaz is a dedicated Program Manager at New Leaf Detox, where she works passionately to support individuals seeking recovery from addiction. With a Bachelor of Science in Psychology and experience in the compliance and risk industry, Monica brings a unique approach to the program’s organizational oversight. Her commitment to helping others find a path to healing is driven by her passion to assist with supporting those struggling to find recovery and guiding them toward a better future. Monica would eventually love to pursue her dream of becoming an LPCC and providing therapy for clients in recovery.
Sarah Chasteen
Alumni Coordinator

Sarah Chasteen is a passionate client advocate, working as the New Leaf client care coordinator and Discharge Planner. With nearly a decade of industry experience, she has made it her professional mission to help individuals overcome addiction and mental health struggles by utilizing resources in the community to help provide the best care possible.
Sarah understands the challenging and ever so rewarding journey in early recovery firsthand. She is deeply committed to breaking the stigma surrounding substance abuse and mental health disorders by promoting her belief that everyone deserves a chance at healing.
Sarah is known for her unwavering commitment to give her supportive and caring attention to clients daily, while applying her own natural desire to help others, by walking side by side with her clients every step of the way as they gain a new life of sobriety, one day at a time.
Timur Youmans
Lead Safety & Operations Tech

Timur has been sober for just over seven years and is deeply passionate about living a sober and free life. He finds peace and balance through surfing and spending time outdoors, activities that bring him a profound sense of fulfillment. Helping others achieve sobriety is a calling close to his heart, and he is dedicated to offering support and encouragement to those in need. Drawing from his own journey, Timur strives to inspire others to find hope and freedom in their own lives.
Jonathon Poyer, CADC I
Case Manager

Timur has been sober for just over seven years and is deeply passionate about living a sober and free life. He finds peace and balance through surfing and spending time outdoors, activities that bring him a profound sense of fulfillment. Helping others achieve sobriety is a calling close to his heart, and he is dedicated to offering support and encouragement to those in need. Drawing from his own journey, Timur strives to inspire others to find hope and freedom in their own lives.
Tracey Wilson, LVN
Licensed Vocational Nurse & Medical Liaison

Tracey was born and raised in San Juan Capistrano has been working in the medical field since 2014. After obtaining her LVN license she decided to pursue a career in addiction and substance abuse disorders. Tracey has a working knowledge of 12 step programs and is passionate towards a life of sobriety and helping others. Working in the field of Addiction and alcoholism truly is her passion and lives by the principles daily. Tracey is a graduate of Orange County Drug court program and still volunteers time giving back as much as she can. At New Leaf she is not only an on-site nurse, but also as a medical liaison, she’s constantly making sure clients get personalized care and also the long term care they need as well. The work doesn’t stop after 30 days. In Tracey’s free time she loves a good true crime podcast, riding her Peloton, and of course loving her fur baby Loki.
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