Meet Our Talented Team

During their time here, patients will be under the 24/7 supervision and care of our highly trained professional staff. Our team of physicians, psychiatrists, and addiction specialists are all master’s-level or doctoral-level practitioners and CSAT-trained with extensive experience in intimacy disorders and sexual trauma. Our psychiatric nurses, nursing staff, and recreation therapists are experienced in supporting patients through the treatment process and working as an integral part of the treatment team. All staff at Willow House at The Meadows are handpicked for their expertise and compassion then trained and supervised by Dr. Stefanie Carnes, ensuring each of our patients receive the most advanced and comprehensive treatment in love and intimacy disorders.

Stefanie Carnes, PhD, LMFT, CSAT

Dr. Stefanie Carnes is the president of the International Institute for Trauma and Addiction Professionals, a training institute and professional organization for addiction professionals. The clinical architect for Willow House at The Meadows, she works with sexually addicted clients and their families, helping those struggling with sex, love, and intimacy disorders.

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Executive Director

Dr. Erica Sarr serves as the executive director of both Gentle Path and Willow House at The Meadows, residential programs specializing in relationship disorders, sex addiction, substance abuse disorders, and co-occurring behavioral health disorders. Previously holding the title of clinical director at Gentle Path, Dr. Sarr has been treating clients with sexuality-related issues across a variety of settings since the beginning of her therapeutic career. A licensed clinical psychologist, she is also a sought-after speaker nationwide on process addictions and mental health issues.

The focus of much of Dr. Sarr’s career has been working with people who have committed professional or criminal sexual boundary violations as well as assisting the regulatory organizations that manage these clients. She has also worked in several intensive settings treating compulsive sexual behavior.

Dr. Sarr is passionate about helping all clients define and embrace healthy, values-congruent sexuality across the lifespan. She also specializes in the intersection of sexuality, mental health, and technology, particularly in the area of video games.

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Havi Kang, MA, LPC, CSAT

Clinical Director

Havi Kang is a licensed professional counselor and certified sex addiction therapist who is EMDR trained and working on her training in Somatic Experiencing. She also serves as the e-learning coordinator for IITAP and has volunteered at multiple IITAP symposiums. Prior to joining the team at MBH, Kang worked in the partial hospitalization program at Aurora Behavioral Health with acute patients. She also worked at PHP and IOP levels of care at Liberation Center for Eating Disorders. In addition to her work in behavioral health, Kang has held administrative and managerial positions where she supervised staff and operations.

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Isabel Nino de Guzman, PhD, CSAT-S


Dr. Isabel Nino de Guzman works as a licensed psychologist for Willow House and Gentle Path at The Meadows, participating in direct patient care and supervising CSAT professionals within the Meadows Behavioral Healthcare family. She trained under Dr. Patrick Carnes' direct supervision and has worked with him conducting research in the field of sex addiction since 2006. Dr. Nino de Guzman has previously held jobs at two of the most reputable programs for addiction treatment in the United States. She also brings a wealth of clinical experience from her career in Peru as a professor, researcher, and author or co-author of several publications.

In her role at Willow House, Dr. Nino de Guzman conducts specialized psychosexual assessments for patients with sexually addictive behaviors, intimacy disorders, and complex trauma. She has brought to our programs her vast experience on dual disorders and utilizes evidence-based practices to treat patients, knowing the unique patterns of interaction between sexual addiction, mental health disorders, and maladaptive personality patterns.

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Rob Wallace, MSN, RN, ASAT

Director of Nursing

Rob Wallace is the director of nursing at both Willow House and Gentle Path at The Meadows. He also serves as Meadows Behavioral Healthcare’s nursing coordinator, interfacing with nursing staff throughout the MBH system. Wallace earned his master’s degree in nursing with a focus on nurse executive and completed Associate Sex Addiction Therapist (ASAT) certification in 2016. Wallace has worked in addiction recovery since 2003, and he remains active volunteering with the Wickenburg Lions Club, Wickenburg Chamber of Commerce (he was awarded the Tip of the Stethoscope Award for 2017 and named Volunteer of the Year in 2010), Wickenburg Unified School District, HOSA, and as advocate for nursing issues at the Arizona Senate and House of Representatives, engaging around behavioral health and substance use disorder iss.

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Jon G. Caldwell, MD

Chief Medical Officer

Dr. Jon Caldwell is a board-certified psychiatrist and clinical research investigator who specializes in the treatment of adults who are healing from relational trauma and addictive behaviors. He is currently the chief medical officer at Meadows Behavioral Healthcare, with oversight of Willow House. His theoretical perspectives are heavily influenced by his PhD training at the University of California at Davis, where he began researching how early childhood maltreatment and insecure attachment relationships affect cognitive, emotional, and social functioning. His clinical approach has become increasingly flavored by the timeless teachings of the contemplative traditions and by the daily practice of mindfulness. Dr. Caldwell has published a number of articles on child maltreatment, attachment theory, emotion regulation, and mindfulness, and he is a noted international speaker and trainer on these and other topics.

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Intensive Family Program

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