Professional Staff

Professional Staff at Prescott House


Dayton Turberville, MEd, LISAC, CSAT, CMAT
Executive Director

Dayton Turberville is a Licensed Independent Substance Abuse Counselor in the state of Arizona, Certified Sex Addiction Therapist, and a Certified Multiple Addiction Therapist. He received his Master of Education with an emphasis in Counseling & Human Relations from Northern Arizona University.Dayton has worked in the fields of addiction and behavioral health since 1999, including clinical and administrative roles in public and private agencies. Prior to becoming Executive Director of Prescott House, Dayton served as our Clinical Director, as well as primary and adjunct therapist.His dedication to the mission of Prescott House and strong commitment to the clients’ success are indispensable to the overall effectiveness of the program. Dayton’s door is always open to both staff and clients, and Prescott House is grateful to have him on our team!

Medical Team



Fred Markham, MD
Medical Director since 1988

Dr. Markham is Board-Certified in internal medicine and a member of the Medical Staff at Yavapai Regional Medical Center.A graduate of the University of Arizona College of Medicine, he is a respected and experienced emergency room physician with a private practice in Prescott. Dr. Markham is a member of the American Medical Association and the American College of Physicians.


Jefferey Penney, MD
Psychiatrist since 2001

Consulting Psychiatrist Since 2001 Dr. Penney received his Doctor of Medicine at the University of Cincinnati and completed his residency training, specializing in Psychiatry, at Washington University in St. Louis. He is Board-Certified by the American Board of Psychiatry and Neurology, and specializes in psychopharmacology with interests in anxiety disorders, mood disorders, and thought disorders.

Psychological Associate



Virginia Conner, EdD, PC
Neuropsychologist since 1993

Virginia Conner received her doctorate at Northern Arizona University and went on the do a postdoctoral fellowship in neuropsychology at Braintree Hospital in affiliation with Boston University Medical School and Tufts New England Medical Center. She taught numerous graduate courses in neuropsychology subsequently at Northern Arizona University, and was an associate professor part-time.She has worked in hospitals and neurological clinics, and currently has a private practice in Prescott. She is on staff at Yavapai Regional Medical Center and Mountain Valley Regional Rehabilitation Hospital, is a fellow in the American College of Forensic Examiners, and is on contract as a mental health expert for the Yavapai County Superior Court.

Clinical Team



Jacqueline J. Johnson, MA, LPC
Clinical Supervisor

Jackie is the Clinical Supervisor at the Prescott House and has 14 years of experience in many areas of the behavioral health field, including substance abuse, crisis work, and assessment & referral. She works closely with the primary therapists and clients in the development and implementation of individualized treatment plans.Her extensive knowledge and clinical skills are wonderful assets to our treatment team. Jackie holds a Master of Arts in psychology from Northern Arizona University and a Master of Arts in counseling from Ottawa University. She is also a Licensed Professional Counselor.

Jeff Martin, MEd, MA, LAC
Behavior Health Program Manager

Jeff Martin leads our clinical group with his experience, training, and wisdom gleaned from his 13 years in the field of addiction. He closely oversees the daily operations of the clinical staff and works to ensure that the individual treatment needs of each client are realized throughout the client’s progression in the Prescott House program.Prior to becoming Clinical Director at Prescott House in 2010, Jeff held the position of primary therapist in the residential phase of our program for several years. The therapeutic insight, professionalism, and objectivity that Jeff demonstrates help guide the clinicians and clients alike. Jeff received his Master of Education from Northern Arizona University.


Lincoln Sperry, LMSW, CSAT
Lead Primary Therapist

Lincoln earned his BA in English at University of Pennsylvania, graduating magna cum laude with Phi Beta Kappa honors. He later earned his Master of Social Work at Arizona State University, with a clinical concentration and internships at Sonora Behavioral Health hospital and Arizona Children Association’s Tucson outpatient clinic. Lincoln completed his intensive Certified Sex Addiction Training with Dr. Patrick Carnes in 2010.He worked for several years as a residential supervisor for an outpatient program in Tucson serving severely mentally ill clients. His areas of special expertise include sexual compulsivity and addictions – particularly with co-morbid psychiatric disorders, and men with eating disorders.

Barbara Rye

Barbara Rye, MA, LPC, LISAC
Clinical Supervisor

Barbara has worked in the field of addictions and mental health for 30 years. As a Licensed Professional Counselor and Licensed Independent Substance Abuse Counselor, she has experience in inpatient, residential, intensive outpatient and private practice settings. She has provided clinical consultation, training and direct services for various entities including schools and universities, emergency responders, treatment centers and tribal agencies. Though her philosophy of care is eclectic, it is rooted in the genuine belief that all individuals have dignity and an inner wisdom which facilitate healing and growth.


Doug Winter, MS, LASAC, CSAT
Primary Therapist

Doug holds a Masters Degree in Addiction Counseling from Grand Canyon University and has been a member of the Prescott House team since 2010. He specializes in treating sexual addiction, eating disorders and co-occurring disorders. Doug has served in a variety of roles at Prescott House including Aftercare Therapist and Eating Disorder Program Coordinator. Doug enjoys spending time with his wife and children.


Chris Sobel
Primary Therapist, BHT

Chris has been part of the Prescott House team since 2005 and an active member in the recovery community in Prescott since 2002. In his work with each client, he brings forthrightness, inspiring life experience, and a commitment to helping men recover from addiction. Chris has many passions including golf and NY Mets baseball, and – most importantly – spending time with his wife and two daughters.

Colten Curtis

Colten Curtis
Primary Therapist, BHT

Colten has been with the Prescott House since 2010. Both insightful and compassionate, Colten enjoys being part of the recovery process for many men struggling with addiction. “Watching people heal and get better is a joy that I am truly grateful for. I get to see the miracle of recovery happen every day and there just isn’t anything better than that.”


Paul Swart
Outpatient Primary Therapist, BHT

Eric Pinkston
Phase I Primary Therapist, BHT

Eric has been with Prescott House team since 2014 and heads the Phase One Program for our new clients. Eric utilizes his own experience with addiction and recovery to aid clients in their first few weeks of treatment by helping them establish a healthy and productive daily routine. Outside of work and school, where he is working towards his Bachelors of Social Work, Eric spends all the time he can attending concerts, playing music, or escaping to the National Forest for a weekend of peace and nature.


Jennifer Tomasovitch, B.A. Expressive Arts
Expressive Arts Facilitator

Jenny Tomasovitch, from Jenny T. Designs, is an artist from Prescott, Arizona. Jenny has been running Jenny T. Designs since 1996 making jewelry, painting, wood burning and more. Jenny attended Northern Arizona University majoring in Art Education and graduated from Prescott College with her degree in Expressive Arts.Jenny T. facilitates our Expressive Art Classes that are meaningful, reflective and fun. Each class offers a structured, professional, fun lesson with room for individual expression and interpretation through multiple art mediums–always emphasizing the value of the process and being in the moment.Classes begin by creating a relaxed, casual, safe, non-judgmental space to be free, get creative and invoke your inner child. Classes can include various journaling topics and group discussions that tie in to the art lesson. Classes vary in topics from relieving anxiety, self-esteem boosters and looking at life from different perspectives, to identifying your feelings through shapes, colors and patterns. Some of the projects include insightful, creative writing, meditative patterned art, relaxing watercolor projects, even crayon arts! When words aren’t enough, expressing yourself in a creative manner can aid in healing on many levels.

Nancy Van der Voort

Nancy Van der Voort, B.S.W.
Facilitator of Spiritual Companionship

Nancy has lived in Prescott since 1989 and is retired from an appreciated and satisfying career in Human Resources Management over more than 30 years in both the Phoenix and Prescott areas. Since retirement, her activities have included a variety of volunteer positions including: Prescott Family Hospice, Yavapai Regional Medical Center, CASA of Yavapai County where she served as a Court Appointed Special Advocate for Children (CASA), the Hungry Kids Project in Prescott, and most currently as a Death Café Facilitator and as a facilitator of Spiritual Companionship. Her spiritual path has given her exposure to many helpful experiences. She has found meaningful participation in Ala-Non, particularly with respect to codependent issues. She has completed the 100-hour program in Personal Coaching at the Southwest Institute of Healing Arts, attended the Nine Gates Mystery School program, and is an ordained Minister of Spiritual Peacemaking. In 2017, she is planning to attend the Hesychia School of Spiritual Direction, a multi-faith approach to spiritual guidance. While not a member of a religious tradition, she was raised Roman Catholic and has particularly appreciated the freedom to explore a variety of world religious practices and finds that, while expressed differently, most have a certain core of common beliefs. She considers herself to be on a life-long path of spiritual discovery and welcomes engaging with individuals and groups who are also seekers of the God of their understanding and of Truth within their own hearts and souls.


Layla Cullen, RN-BC
Registered Nurse

Layla Cullen is a proud Arizona-native who graduated with honors from Yavapai College with a degree in Applied Science, Nursing. She has been a Registered Nurse since 2010, working in mental health at Windhaven Psychiatric Hospital and West Yavapai Guidance Clinic.She prides herself on providing holistic, compassionate nursing care with an emphasis in educating and empowering her patients to care for themselves when navigating mental, physical, emotional and spiritual health. She is a Board Certified Psychiatric and Mental Health Nurse. She is thrilled to be employed with Prescott House to assist in educating staff and clients, promoting hygiene and infection control, and encouraging and supporting sobriety.

Support Staff


Tim Scanlan
Behavior Health Residential Supervisor

Tim grew up in Tucson, AZ and struggled with addiction from an early age. He came to the Prescott House in June of 2014 and has been sober since. He has found his passion in helping people recover from addiction and is an active member of the AA community in Prescott. He is currently a year away from completing his BS in Applied Human Behavior at Northern Arizona University and plans on entering a Master’s Program afterwards. Tim has worked at the Prescott House since 2015 and is an avid U of A basketball fan.

Kyle Haugebak

Kyle was born in Mesa, Arizona and grew up loving all kinds of sports and played hockey for 15 years. Playing sports, Kyle always had to pay close attention to diet and exercise. In his late teens to early twenties Kyle became addicted to prescription pills and developed unhealthy ways of dieting and weight lifting through illegal supplements and restrictive eating. In 2013 Kyle went to and graduated from the Prescott House. With the tools he learned while at the Prescott house, Kyle found healthy ways to eat, exercise to reduce stress. Since working at the Prescott house Kyle have been implementing his sports background through physical activity and nutrition to help build confidence, instill team work, and help clients learn new healthy life skills. Kyle’s passion is to pass these life lessons on to other men.


Matthew Miller, MEd, LAC



Ethan Engler


Admissions and Administrative Team


dave frey

Dave Frey
Director of Admissions

Dave started working at the Prescott House in 2003 as an Admission Coordinator. Dave is very passionate about helping others and especially families in crisis. “I fell in love with Prescott as a client here, and decided to make it my home after I graduated the program myself (Dave is originally from Tucson, Az).” Dave is available throughout the week at Prescott House’s toll free number: 1-866-425-4673


Zach Lindley
Admissions Coordinator

Call to speak to Zach at Prescott House’s toll free number: 1-866-425-4673


Michael McInnes MBA, BHT
Business System Coordinator

Michael is the point of contact in regards to insurance inquiries and processing. Michael is a former Marine as well as Thunderbird, International School of Business MBA graduate.

Peter T

Peter Tomasovitch
IT/Marketing Coordinator

Peter works with our staff on technology issues as well as working closely with our Admissions Team. Peter has extensive internet skills and works with marketing and maintaining our web presence. A web designer since 1996 and graduate of Embry-Riddle Aeronautical University, Peter is a solid addition to our professional team.


Client Support Staff


prescott-house-alumniMichael Murphy
Corey Alcala
Robert Pierret
Blake Stein
Todd Richardson

Business Office Staff

 prescott-house-alumniScott Christ, BHT
Brian Carlisle

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