Muir Wood is the choice of medical professionals around the country because of its specialized, evidence-based care for teens. It is also distinguished by the talent and collegiality of its team members. Muir Wood carefully selects its staff for their ability to provide exceptional care, and for their ability to support the values of compassion, kindness, cooperation, and quality that are its hallmark. Working as a close-knit unit, our dedicated staff helps ensure strong collaboration and continuity of care for teens. They include clinical and medical professionals, academic leaders, and administrative staff. Meet the Muir Wood team that impacts lives by nurturing change and advancing adolescent health.
Senior Management Team
Stacey Irving has held leadership positions at some of the country’s leading healthcare brands, including McKesson, DaVita Kidney Care, and most recently, Tia Health. At DaVita, she was deeply involved in scaling operations and advancing patient care models, helping to support one of the nation’s largest networks of dialysis centers. At Tia, she played a key role in building the brand’s network of integrated clinics, expanding access to women’s healthcare across the U.S. Stacey brings this blend of operational expertise and mission-driven leadership to Muir Wood, fostering a culture where every teammate is valued and contributes to the overarching goal of “making exceptional care accessible.”
“Joining Muir Wood as a CEO is not just about leadership; it’s about being part of a mission that empowers adolescents to overcome their challenges and unlock their full potential, creating ripples of positive change in our communities.”
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Bryan is a proven addiction treatment executive with a unique combination of experience in new business venture, management, business development, admissions, and intervention. With over 20 years in the treatment industry, Bryan got his start as an overnight tech and has worked his way up to be recognized as a National Leader in the Industry. Bryan has served on many non profit boards for recovery, addiction and intervention related organizations. These include; California Association of Addiction Recovery Resources (CAARR), The Association of Intervention Specialists, The Helen Vine Detox Center and The Henry Ohlhoff Programs. Bryan’s philosophy on treatment is to provide the best clinical care and provide families with the education and resources they need to become an integral part of the healing process. He is an empathetic leader who creates teams that people want to be a part of. In his spare time, Bryan leads an active life in the beautiful surroundings of Northern California with his wife and daughter.
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Chief Clinical Officer
Doctor of Psychology
Education: University of Southern California, Alliant International University
Read BioAreas of Clinical Expertise
- Adolescent Mental Health & Development
- Trauma-Informed Care
- Cognitive Behavioral Therapy (CBT)
- Dialectical Behavior Therapy (DBT)
- Acceptance and Commitment Therapy (ACT)
- Family Systems Therapy
- Integrative Psychology
- Integrated Treatment for Complex Co-Occurring Disorders
- Spiritual Development & Recovery
“Leadership means ensuring every decision we make begins and ends with the wellbeing of our clients. That focus—combined with a commitment to ethics, collaboration, and service—shapes everything we do at Muir Wood.” — Ian Wolds
Experience
Ian Wolds, PsyD, is a licensed clinical psychologist with more than 21 years of experience in the behavioral health field. Dr. Wolds’ career has been dedicated to working with diverse clinical populations dealing with addiction; mental illness; and co-occurring disorders across individual, group, and family contexts. His work is characterized by a commitment to evidence-based practices and a passion for helping clients and families develop self-awareness, resilience, and personal fulfillment.
He has served as a clinical director at BrightQuest Treatment Center and at The Canyon at Peace Park, both residential treatment centers. He worked as President of Constellation Behavioral Health, overseeing all facets of the company and its treatment programs. He also held the position of Executive Director at Alta Mira Recovery Programs, where he integrated evidence-based practices into treatment to enhance client outcomes.
Education
Dr. Wolds holds an undergraduate degree in religion, with a minor in law and society. He completed his graduate work at the California School of Professional Psychology at Alliant International University in San Diego where he obtained a master’s degree and doctorate in clinical psychology, with an emphasis in integrative psychology.
He completed postdoctoral training at BrightQuest Treatment Center in San Diego where he worked within a therapeutic community model serving individuals with severe mental illness and dual diagnoses.
Role at Muir Wood
Dr. Wolds currently serves as the Chief Clinical Officer at Muir Wood, where he oversees clinical strategy and programming with a focus on ethical excellence, early intervention, and collaborative care. He fosters deeply interdisciplinary clinical teams who bring together a range of perspectives—psychiatric, therapeutic, medical, educational, and experiential—to create a unified and responsive treatment experience.
At the core of Dr. Wolds’ philosophy is a belief in the resilience of the human spirit. He believes that with the right support, structure, and relationships, young people can build a future that reflects their full potential.
Personal Interests
Dr. Wolds enjoys spending time with his wife and children, mountain biking through Marin County’s open spaces, listening to great music, cooking great food or finding great restaurants, and traveling to visit family or explore new places. These personal pursuits allow him to stay grounded, energized, and present both at home and in his leadership role.
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Danny Pencak is a licensed Certified Public Accountant (CPA) serving as the Chief Financial Officer for Muir Wood overseeing the company’s revenue cycle management, accounting, and financial operations.
Danny has over twenty years of experience in financial management within the healthcare sector. His most recent CFO position, prior to joining Muir Wood, included facilitating strategic acquisitions and expansion for Akeso Occupational Health. Danny led Akeso to grow into one of California’s largest providers of occupational medicine services. Prior to joining Akeso, Danny held various other financial management positions with key accomplishments including raising $1.8 billion for a specialty diagnostic laboratory and executing over $10 billion in transactions for KPMG’s healthcare advisory group.
In addition to serving as CFO for Muir Wood, Danny serves on the Board of Directors for several non-profit organizations including the Boys and Girls Club of Vista and the La Costa Valley 35 Athletic Club.
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Brent is an extremely respected professional in the field of behavioral health and addiction treatment with over two decades of experience working in executive level positions at many highly regarded treatment programs and organizations. Additionally, as a consultant, Brent has been instrumental in assisting many other programs with licensure, accreditation, compliance and regulatory issues. As the Director of Compliance for Muir Wood, Brent ensures that the facility is in compliance with all health and safety practices, monitors the policies and procedures to ensure they are in alignment with licensing, manages the program’s performance improvement planning and monthly meetings, monitors the electronic health records to ensure proper and timely documentation, monitors employee hiring practices and human resource compliance, and is a valued member of the executive leadership team at Muir Wood.
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Heather brings over 30 years of experience to the Muir Wood team, with the last 25 years focused on behavioral health treatment. The behavioral health insurance realm can be complicated for families and programs alike. Her passion is helping both parties navigate the complexities which arise. Heather is well versed in revenue cycle management, payor strategy / contracting and utilization review. She enjoys working through the challenges each of these offers. When not working, Heather enjoys spending time with her family, fishing, and traveling.
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Maura, or “Mo” as we call her, brings two decades of business experience to her role as Director of Admissions. Previous to working at Muir Wood Adolescent and Family Services she was an Admissions Counselor at a treatment center in Marin County and also held positions in sales, marketing, finance, and operations in various industries over the years. She joined the Muir Wood Adolescent and Family Services team in February of 2018 and was our Director of Operations for 3.5 years before moving over to the business office in July of 2021 to direct our admissions department. When asked about being part of the Muir Wood Adolescent and Family Services team, she states, “to be fortunate enough to help adolescents and their families in the very same county where I was once an adolescent myself, it just feels like home, it is an absolutely beautiful feeling.” Maura was born and raised nearby in picturesque Sonoma Valley and her family still resides there. At 22 years of age, she graduated Cum Laude from California Polytechnic State University, San Luis Obispo, with a Bachelor of Science degree in Agricultural Business and a minor in Viticulture. Maura is passionate about helping others become the best version of themselves through living a healthy, balanced, sober, lifestyle and is extremely proud of the excellent care that the Muir Wood Adolescent and Family Services Team provides its clients and families. Outside of work, she is fulfilled by spending time with her loving husband, young son, rescue kitty cats Indy and Curry, and French Bulldog Luna.
You can reach Mo at Msangster@MuirWoodTeen.com
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Vice President of Outreach
Kelli brings years of administration and operations experience to Muir Wood in her role as Director of Operations. She joined the Muir Wood team in July of 2021. Kelli formerly worked in other treatment center settings and most recently worked as an Operations Manager for a small private school in Marin County. Kelli was born and raised in Sonoma County. Kelli has been in recovery since she was 17 years old and is passionate about her own recovery and helping others on their journey. At Muir Wood she is responsible for the day-to-day operations of all Muir Wood properties and facilities, supporting Muir Wood’s mission, goals, and professional standards.
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Kathleen brings a wealth of experience in building strong, people-first workplaces while keeping things running smoothly behind the scenes. Throughout her career, she has helped organizations support their teams, enhance culture, and drive operational excellence. Most recently, she served as VP of Employee Relations at Cinemark, where she supported a large, multi-state workforce. She understands how to balance the needs of clients, teammates, and the bigger mission—which makes her a fantastic fit for Muir Wood.
As we continue our work to strengthen our culture, enhance the teammate experience, and refine our people processes, Kathleen’s leadership will be instrumental in ensuring Muir Wood remains not only a leader in adolescent behavioral health but also a truly great place to work.
In her new role, Kathleen will be leading our HR team and working closely with the Muir Wood staff to create a place where teammates feel valued, supported, and set up for success.
Beyond her professional expertise, Kathleen is a people person through and through. She lives in Novato with her husband, and she and her three daughters share a passion for healthcare and helping others. Outside of work, she loves staying active outdoors and spending time with family.
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Clinical Director, Auberry North and Makena Programs
Clinical Director, Skillman Campus
Licensed Marriage and Family Therapist (LMFT)
Education: Sonoma State University, Empire School of Law
Read BioAreas of Clinical Expertise
- Adolescent Mental Health & Development
- Family Systems Therapy
- Trauma-Informed Care
- Cognitive Behavioral Therapy (CBT)
- Motivational Interviewing
- Program Development & Curriculum Design
- Risk Assessment & Crisis Management
- Clinical Supervision & Team Leadership
- Legal-System-Involved Youth
“It’s the little things—showing up consistently, listening deeply, and holding teens accountable with care—that open the door for real transformation.” — Yolanda Vazquez
Experience
Yolanda’s clinical work is rooted in Family Systems Therapy, and her philosophy centers on relational repair as the key to lasting change. She believes that adolescents thrive when given structure, consistent expectations, and compassionate accountability. Her therapeutic approach integrates CBT, Motivational Interviewing, and active listening, with a constant focus on safety, rapport, and personal responsibility.
Education
Yolanda holds a bachelor’s degree in psychology and a master’s degree in counseling, both from Sonoma State University. She also received Master of Laws and Juris Doctor degrees from Empire School of Law. Her interdisciplinary educational background gives her a unique foundation for supporting teens in crisis.
Role at Muir Wood
As Clinical Director, Yolanda supports Muir Wood’s mission by fostering a culture of accountability, warmth, and integrity. She ensures that clinical decisions are made with the well-being of adolescents and families at the center.
She holds high expectations for herself and her team, while maintaining an open-door policy that encourages communication and collaboration. She fosters a culture where staff feel empowered to grow, ask questions, and solve problems collaboratively.
Personal Interests
Yolanda finds joy in spending time with her family, especially her baby niece. Her wellness practices include regular exercise; travel; and prioritizing deep, restorative sleep. She is also a believer in meaningful self-expression and honors important life moments through symbolic body art—each piece representing a story or value she holds close.
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Clinical Director, Penngrove Campus
Licensed Marriage and Family Therapist (LMFT)
Education: Pepperdine University, Vanguard University of Southern California
Read BioAreas of Clinical Expertise
- Adolescent Mental Health & Development
- Trauma-Informed Care
- Cognitive Behavioral Therapy (CBT)
- Dialectical Behavior Therapy (DBT)
- Acceptance and Commitment Therapy (ACT)
- Family Systems Therapy
- Integrative Psychology
- Co-Occurring Disorders
- Eating Disorders
- Attachment-Based Therapy
“The most rewarding part is witnessing the moments of reconnection, understanding, and healing within the family system. Supporting families as they move from a place of disconnection to one of empathy, communication, and renewed trust is incredibly meaningful.” — Joanna O’Neill
Experience
Joanna O’Neill is a Licensed Marriage and Family Therapist (LMFT) with more than a decade of experience in clinical leadership and adolescent behavioral health. Her experience includes program design, team building, and clinical oversight in highly specialized residential and outpatient settings.
Before joining Muir Wood, Joanna served as Chief Clinical Officer at TrueCare Treatment Centers. In this role, she provided strategic clinical leadership, guided quality assurance initiatives, and supported integrated care teams in high-acuity settings. She also held multiple senior roles at the Eden Center for Eating Disorders, a gender-inclusive residential program focused on treating adolescents and adults with complex eating disorders, including anorexia, bulimia, and binge eating disorder.
Education
Joanna completed her undergraduate education at Pepperdine University, where she received a bachelor’s degree in psychology. Upon graduation, she attended Vanguard University of Southern California for her graduate studies. She holds a master’s degree in clinical psychology.
Role at Muir Wood
Joanna currently serves as Clinical Director of the Penngrove Program at Muir Wood where she leads her clinical team in delivering developmentally appropriate care rooted in empathy, structure, and relational connection. Her leadership style focuses on fostering cohesion, clinical consistency, and clarity of purpose across the treatment team, ensuring that every teen receives high-quality care from a connected and invested group of professionals.
Joanna approaches therapy with a relational, trauma-informed lens, grounded in the belief that authentic human connection is the foundation for healing and transformation. She views a strong therapeutic relationship and family engagement as two essential components of recovery. She works closely with interdisciplinary teams to ensure alignment in treatment planning, continuity of care, and a shared commitment to helping teens and families build more connected, resilient relationships.
Personal Interests
Outside of work, Joanna prioritizes quality time with her family and maintains a strong commitment to personal wellness. She enjoys staying active and finds renewal in the natural beauty of Sonoma County—whether hiking local trails, enjoying the outdoors, or simply spending time in peaceful surroundings. These moments of balance and connection reflect the values she brings into her leadership and clinical work.
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Program Director – Petaluma IOP
Rawly is Muir Wood’s Director of Family Services. He is also a nationally recognized presenter on co-dependency and was the recipient of the Addiction Professional Outstanding Clinician award in 2012. He has been a practicing therapist for over 15 years and involved in the field of social work for over 30 years. Rawly holds a B.S.W. from Pacific Union College and a M.S.W. from Walla Walla University in Washington, with a dual emphasis on clinical work with children and adolescents along with addiction treatment. Rawly’s sincerity, obvious compassion, and commitment to the families and teens at Muir Wood make him a favorite at our Family Program presentations.
Clinical Director, Riverside Campuses
Licensed Marriage and Family Therapist (LMFT)
Education: California State University, San Bernardino
Read BioAreas of Clinical Expertise
- Adolescent Mental Health
- Trauma-Informed Care
- Cognitive Behavioral Therapy (CBT)
- Dialectical Behavior Therapy (DBT)
- Acceptance and Commitment Therapy (ACT)
- Family Systems Therapy
- Addiction and Substance Use
“Every teen deserves a safe space to be seen, heard, and supported—not just clinically, but as a whole person. At Muir Wood, I’m proud to lead a team that shows up with purpose and heart, helping teens and families navigate some of the hardest moments in their lives with compassion, structure, and hope.” — Sam D. Worrall
Experience
Sam D. Worrall, M.S., LMFT, has nearly a decade of experience supporting individuals and families impacted by substance use and co-occurring mental health disorders. He has worked as a clinical therapist at Psychiatric Alternatives and Wellness as well as a clinical supervisor at HumanSave.
In a forensic therapist role with Riverside County, Sam worked with incarcerated veterans on substance use treatment and helped develop a discharge planning and case management program to support successful community reintegration. At Kaiser Permanente, Sam worked as a Chemical Dependency Recovery Counselor, supporting adults, adolescents, and their families through substance use recovery.
Education
Sam received his bachelor’s degree in psychology from California State University, San Bernardino (CSUSB). He then earned his Masters of Science in clinical counseling psychology from CSUSB. During his education, he completed research in the Trauma and Resiliency Laboratory under the supervision of Christina M. Hassija, Ph.D. and attained a Collaborative Institutional Training Initiative certification.
Role at Muir Wood
Sam is currently serving as the Clinical Director at Muir Wood’s Riverside programs, where he brings a deep commitment to trauma-informed care at Edgewild Campus, Bradley Ranch Campus, and Da Vinci Campus.
Sam believes that effective care involves both supporting the individual and engaging their families as essential partners in the healing process. At the Riverside campuses, he collaborates with interdisciplinary teams to foster an environment where teens feel safe, heard, and empowered.
Personal Interests
In his personal time, Sam embraces activities like axe throwing, rock climbing, and hiking. These pursuits bring excitement, challenge, and balance to his life. He prioritizes regular exercise to support both his physical and mental well-being. He also enjoys movies and staying connected by playing video games with friends.
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Chair, Addiction Medicine & Medical Quality Assurance Committee; Diplomate, American Society of Addiction Medicine
Read BioDr. Smith is recognized as a national leader in addiction medicine, the psychopharmacology of drugs, new research strategies in the management of drug abuse problems, and the treatment of adolescent substance abuse. He is the founder of the Haight Ashbury Free Clinics of San Francisco and has been honored as one of the “Best Doctors in America.”
Dr. Smith is a fellow and past President of the American Society of Addiction Medicine, past president of the California Society of Addiction Medicine, past medical director for the California State Department of Alcohol and Drug Programs, and past medical director for the California Collaborative Center for Substance Abuse Policy Research. In addition to his role as Chair of Addiction Medicine here at Muir Wood, Dr. Smith is also an adjunct professor at the University of California, San Francisco. Dr. Smith is the founder and publisher of the Journal of Psychoactive Drugs and co-editor of the International Addiction Infoline newsletter. In addition, he has authored or co-authored twenty-six books, written over 340 journal articles, edited twenty-eight journals, and been the technical consultant for twenty-eight drug abuse-related films.
Listen to the podcast about Dr. Smith.
Nurse Practitioner
Dr. Nan Herron is a triple board-certified psychiatrist who received her training at Yale University and Brown University Medical School. She completed post graduate training at Brown University with a triple-board residency in Pediatrics, Psychiatry and Child and Adolescent Psychiatry, and was a Clinical Fellow in Post-traumatic Stress Disorder (supervised by Bessel van der Kolk, MD) at Massachusetts General Hospital, Harvard University Medical School. Dr. Herron has extensive training in Mindfulness-based Stress Reduction from the University of Massachusetts Dialectical Behavioral Therapy Training program and is certified in Trauma-Informed Mind-Body Programs. She has also received certification at the Marin Mindfulness Institute: Teaching for Children and Adolescents, and 200-Hour Yoga Teacher Certification. She has authored publications on the history of trauma in psychiatry, as well as trauma and the development of borderline personality disorder. Dr. Herron is affiliated with the American Academy of Child and Adolescent Psychiatry, American Medical Association, and First Responder Support Network.
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Muir Wood Medical Consultant
Psychiatrist
Education: Ain Shams University Faculty of Medicine, Boston VA Healthcare System, Brown University
Read BioAreas of Clinical Expertise
- Child, Adolescent, and Adult Psychiatry
- Addiction Psychiatry and Dual Diagnosis Treatment
- Diagnostic Clarity in Complex Psychiatric Presentations
- Medication Management Across Developmental Stages
- Trauma-Informed, Compassionate Psychiatric Care
- Family-Centered Treatment Planning and Support
- Collaborative Care in Residential and Outpatient Settings
Experience
Maher S. Kozman, MD, FAPA, is a board-certified psychiatrist with specialization in general psychiatry, child and adolescent psychiatry, and addiction psychiatry. He has over 40 years of experience and expertise in treating complex co-occurring psychiatric and substance use disorders in youth.
In 1990, he joined Kaiser Permanente, an organization he has remained affiliated with for over three decades. He has served as an Assistant Clinical Professor of Psychiatry at Loma Linda University and as a Clinical Associate Professor of Clinical Science at the Kaiser Permanente Bernard J. Tyson School of Medicine.
Education
Dr. Kozman completed his undergraduate and medical school education at Ain Shams University Faculty of Medicine in Cairo, Egypt. He continued his medical training when he moved to the United States, with a general psychiatry residency at the Boston VA Healthcare System (Brockton-West Roxbury) and a fellowship in child and adolescent psychiatry at Brown University.
Role at Muir Wood
Dr. Kozman currently serves as a medical consultant for Muir Wood, where his guidance supports the organization’s mission of delivering exceptional, evidence-based treatment for teens. He consults on diagnostic clarity, treatment planning, and medication management, contributing to Muir Wood’s integrated, team-based approach. His perspective and decades of experience help reinforce the organization’s commitment to safety, effectiveness, and family-centered care.
He knew from early childhood that he wanted to be a doctor—feeling particularly called to psychiatry to address emotional pain and the complexities of the human mind. He approaches every young person he treats with the same level of care and respect he would want for his own children.
Personal Interests
Outside of work, Dr. Kozman leads a balanced and family-oriented life. He enjoys traveling with his wife and children, reading, hiking, sketching, and staying active through tennis and ping-pong.
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