Logan County

Logan County, located in the northeast corner of Colorado, is a rapidly growing agriculture and industry-based community. The county seat is Sterling, CO located on I-76 just 125 miles from Metro Denver, 90 minutes from DIA, and 40 minutes from I-80.

Centennial offers a wide range of services in Logan County, with over 20 full and part-time clinical staff. Services are available for people of all ages. We offer assistance in our office, in client's homes, at schools and out in the community according to each client's need.




Office Location:  211 W. Main Street Sterling, CO 80751
Phone:  (970) 522-4392  Fax:  (970) 522-2217
Office Hours:  Monday-Friday 8 am - 7 pm



Regional Operations Director
Lindy Barnhill, CAC III
Click here for more about Lindy

Regional Operations Manager
Chantell Christner 
Click here for more about Chantell

Meet the Logan County Staff


Alli Harvey, A.A.S.

Populations Served:  Younger children, Adolescents

Treatment Expertise:  Early childhood, ages 0-8

I have always chosen to work in the fields that allow me to guide/teach children.  I have may years of experience working with younger children in a preschool setting, and am enjoying the opportunity to work with adolescents as a mentor here at Centennial.

  • A.A.S. Early Childhood Education

Ann Tompkins, MS
Serving children ages 0-8 years old

Treatment Expertise:   Social-emotional development in children, depression, anxiety, trauma, grief and loss and play therapy

Ann provides parent and caregiver education, including but not limited to developmental challenges and behaviors of children.  She is the facilitator of the ADHD clinic and the Dina Dinosaur Group.

  • M.S. Mental Health Counseling, Capella University, 2011
  • Nationally Certified Counselor
  • Play Therapy Certified

Brad Ayers, MSW
Early Childhood Specialist 

Populations Served:  Children, Adolescents and Adults

Area of Expertise:  Anxiety Disorders, Mood Disorders and Trauma Treatment

Brad moved to Colorado in May of 2013.  Originally interest in an administrative/political career, he decided to pursue his MSW in order to gain a more complete understanding about human behavior and social problems at the micro level.  His hobbies include traveling, working out, listening to music and going to concerts, and watching college football and hockey with family and friends.

  • AA, Kalamazoo Valley Community College, International Relations
  • BA, Western Michigan University, Public Policy/Nonprofit Leadership
  • MSW, Michigan State University, Social Work

Brenda Carrasco
The Journey Program Case Manager

Populations Served:  Adult population, over 18 years of age.

Treatment Expertise:  Adults with severe and persistent mental illness in Centennial's Community Support Program.

Brenda has worked for Centennial for numerous years, she brings a wealth of knowledge to the Community Support Program through case managment, referral, advoacy, and wellness services.  Brenda facilitates a variety of groups and skill buidling activities for individuals with severe and persistent mental illness.  Brenda also assists individuals in acquiring benefits through Department of Human Services and Social Security.


Brenda Reyes, BS, MA
Mental Health Professional I
The Journey Program Case Manager

Brenda Reyes joins CMHC with a diverse background in social work, education and the legal field.  Her most recent experience included facilitating and instructing parenting, anger management and life skill classes that included family relationships, employment, grieving, financial managment and problem solving at a male correctional facility.  Ms. Reyes has also taught Introduction to Psychology, Developmental Psychology and Educational Psychology at the community college level.  Her past experience includes work in a long-term care facility, School to Work Alliance Program, Youth Developmental Assets and program and curriculum development.

  • B.S. in Education, University of Oklahoma, Family and Consumer Studies
  • M.A. in Religious Education, Southwestern Baptist Theological Seminary with emphasis in Counseling Psychology
  • Ms. Reyes is also trained in Solution-Focused Brief Therapy

Brenda has been married for 32 years and has three grown children.  She enjoys reading and quilting in her spare time.  She is also involved in researching her genealogy.

 bio_Cheri.Helbert.jpg Cheri Helbert
Mental Health Professional

Cheryl Dillon, LPN

Cheryl is a staff nurse based in the Sterling office.  She is one of two nurses that assists Centennial's medical staff with medication refills for all clients in Centennial's catchment area.  Within the Sterling office, she is able to provide daily or weekly medication monitoring, and injections. 


Chris Jutz, CAC III 

Populations Served:  Chris provides outpatient Substance Use Disorder treatment to individuals and families across the lifespan.

Treatment Expertise:  Chris has been providing Substance Use Disorder treatment for 22 years at Centennial.  Chris has a therapy dog named Layla, who is registered with Therapy Dogs, Inc., and assists in providing Substance Use Disorder Services.

Chris has a wide variety of experience working with Substance Abuse and Co-occuring Disorders.  She is a certified trainer for Strategies for Self Improvement and Change (SSIC) and has been trained in Dialectical Behavioral Therapy (DBT).  Chris offers groups to all populations in receiving Substance Use Disorder services, including specific women's issues, trauma, depression and PTSD.  She has been fortunate to have worked with mental health therapists and has acquired alot of experience in this field as well. 

Chris provides intakes, evaluations, group, individual and family sessions.  She has also been a member of the Critical Incident Stress Management Team for many years.  Chris has received specialized training in emergency services, and additional education in Criminal Justice and Domestic Violence.


 bio_connie-swick.jpg Connie Swick
Data Entry

Eline Potoski
Mental Health Professional

 bio_jackie.vasquez.jpg Jackie Vasquez
Office Coordinator 

Jami Brown
Mental Health Professional I
The Journey Program Supervisor
Parenting with Love and Limits Co-faciltator

Areas of Expertise include:  Children and Families, Child Sexual and Physical Abuse and Neglect, Attachment, Substance Abuse Pertaining to Family Dynamics, Domestic Violence, Interviewing and Crisis Intervention.

I began working for the Logan County Department of Social Services in Sterling, CO in June of 2003 and continued through February 2013.  During my time with LCDSS I worked with children and families in crisis due to parental substance abuse, domestic violence, child physical and sexual abuse and child neglect.  I assessed safety, developed treatment plans and provided services to families.  I provided emergency on-call services.  I interviewed persons interested in providing care to foster children, provided support to foster and kinship families, co-ran a monthly support group and aided in the adoption process of foster children who were legally free.  I facilitiated group meetings between families and community agencies.

From approximately January 2010- February 2014, I was employed by Phillips County Department of Social Services as a child protection on-call worker.

  • BA, Psychology, Univeristy of Northern Colorado

Jessica Roit, MA
Mental Health Professional II

Areas of Expertise include:  Adolescents and Adults

Treatment Expertise includes:  Individual and Group Therapy

In the Spring of 2014, Jessica moved to Colorado and joined the Sterling Centennial Mental Health team to pursue her passion of helping others.  Originally from eastern Nebraska, Jessica has a rich background in farm/ranch and rural living.  She enjoys being active outside, teaching herself how to quilt, reading and spending time with family and friends.

  • BA, Legal Studies, Chadron State College
  • MA, Community Mental Health Counseling, Chadron State College

Laura Powell, BA
SB-94 Case Manager

While attending the University of Wyoming, Laura was a primary witness to a violent crime that was committed by a juvenile.  This motivated Laura to work towards a degree in the Juvenile Justice field.  She began in 1996, working with violent juvenile offenders at High Plains Youth Center in Brush, CO, while also completing studies.  In 1998 Laura graduated from the University of Wyoming with a Bachelor's degree in the Adminstration of Justice with a minor in Juvenile Psychology.  Now, as an SB 94 Case Manager for the 13th Judicial District, Laura covers juvenile District Court case filings for Logan, Sedgwick, Phillips, Yuma, Washington, and Kit Carson counties.  This combines working with youth, not ony in the court room, but also on a more personal level to help guide them to a more positive and productive path in life.


Michelle McCauley, MS
Mental Health Professional 

Areas of expertise include these populations: Adolescents and Adults

Areas of expertise include:  Treating the chronically mentally ill, mood disorders and working towards trauma and addiction.

Michelle's experience includes working with the chronically mentally ill in Centennial's Community Support Program since 2009 and previous work experience working at a youth treatment facility.  Michelle has enjoyed working with adolescents because of the potential and energy they can bring to others' lives as well as their own.  Michelle is an LGBTQ ally and look forward to strengthening knowledge and services to this population.

  • AA, Northeastern Junior College
  • BA, University of Northern Colorado, Greeley, CO
  • Currently completing a Master's Degree in General Counseling through Capella University, with a projected graduation date of September 2013.

Rhonda Conger
IOG Specialist/Mentor 

Populations Served:  Children, youth and families

Areas of Expertise:  Goals and decision making, Coordination of services, Family Advocacy, TEAM meeting facilitation

After many years as a volunteer mentor and program director with youth in both the Pueblo and Sterling Colorado areas, Rhonda enjoyed the opportunity to teach K-12 music at the Caliche and Merino schools in northeastern Colorado.  She became the coordinator for the Logan County IOG and a mentor for Centennial in the fall of 2011.  This opportunity has allowed her to apply lessons learned throughout these many years of working with youth, including the ongoing work of raising 5 children of her own.


Sarah Walgenbach, AA, CAC II
Substance Abuse Counselor II
In the Substance Use Disorder Field since 2009

Populations Served:  Adults, Adolescents, Women's Specialized Services, and families

Treatment expertise includes:  Case Management, Individual and Group Therapy

Issue of expertise includes:  DUI Education and Therapy, Substance Abuse Assessments, Cognitive Behavioral Therapy, Women's issues, Relapse Prevention, Women's treatment, Anger Management, Strategies for Self Improvement and Change and Crisis Managment.

I began working for Centennial Mental Health in April 2012.  My desire to work as a substance abuse clinican stems from working with pregnant substance users and incarcerated individuals.  In August 2012, I accepted the position of Specialized Women's Services Team Lead.  This position assists with improving Centennial's response to substance use disorders by providing resources, services information, and assistance for working with female substance users with dependent children (Specialized Women's Services) and Special Connections, Colorado's Medicaid funded care program for pregnant and post-partum substance users.

I received my associate's degree in Alcohol and Other Drug Abuse (AODA) counseling in 2009 from Moraine Park Technical College in Fond du Lac, Wisconsin.  I am currently working towards my Bachelor's degree in Human Services through the University of Wisconsin Oshkosh with a tenantive completion date of 2014.

For my AODA intership, I worked at Genesis Behavioral Services in West Bend Wisconsin.  I conducted individual and family sessions, co-facilitated family sessions, DUI, adolescent, women's, IOP, job placement, relapse prevention, and after care groups.  I also spent the majority of my intership conducting DUI, Relapse Prevention and substance abuse groups in the Washington County Jail.

Prior to working at Centennial, I was working full-time as a substance abuse counselor at Taycheedah Correctional Facility in Fond du Lac, Wisconsin.  Taycheedah is a maximum security women's prison in northeastern Wisconsin.  I was responsible for doing case management, individual sessions, treatment planning, parenting, treating pregnant substance users, Cognitive Behavioral Therapy, Anger Management, domestic violanece, women's issue, teaching life skills, conducting health and wellness and substance use disorder groups.  I also supervised weekend visits between the women and their children, including assisting in housing searches.  I was also responsible for conducting a substance use disorder group in the secured lockdown unit.  At this time, I also was working part-time at the Beacon House in Fond du Lac, as a relief counselor and overnight clinician.  I was responsible for case managment, family reunification, life skills groups, and consistent contact with referral sources of Department of Human Services and Probation.  I also observed weekend visits between women and their families.  A second part-time job, was at Nexus House through Lutheran Social Services.  The Nexus House was a half-way house for men with substance abuse issues and sex offender status.  Clients were recently released from jail/prison or on alternatives to revocation.  They were typically housed for 90 days.  I assited the men with updating resumes, finding employment and family reunification.  I conducted Cognitive Behavioral Therapy, Substance Use Disorder treatment, Anger Management, Domestic Violance classes and Life Skills management, while also providing individual treatment, case management servcies and transportation.

I moved to Sterling, Colorado in April 2012.  I am originally from Fond Du Lac, Wisconsin.  I have a boxer named Izzie, who is full of personality.  Before leaving Wisconsin, Izzie finished her Master's level obedience training.  We are moving to start therapy classes.  I hope to enroll her while we are here to start therapy animal certification as I would love to use her with client contact.  I enjoy being outdoors, love the mountains and I am continuing my education online. 

Hobbies include but are not limited to:  horsebackriding, hiking, camping, watching the Brewers and Packers play and spending time with my family and friends.

  • Clinical Substance Abuse Counselor, State of Wisconsin - over 7000 hours of practice
  • Associates Degree, Alcohol and Other Drug Abuse Counseling, Moraine Park Technical College, Fond du Lac, Wisconsin
  • Certified Addition Counselor II, Colorado
 bio_suew.jpg Sue Whited

Theresa Miller, CAC III
Jail Based Behavioral Health Services

Populations Served:  Incarcerated individuals in the criminal justice system.  Theresa has conducted outpatient therapy to include the following substance use disorder groups.

Areas of Expertise:  Substance Use Disorders

Theresa currently is working as a Jail Based Clinican, but has a history of conducting treatment with court-mandated clients.  She has provided group therapy for those that are required to treatmentment by the criminal justice system, as well as Health and Human Services and the DMV.  Theresa's goal is to fully support the client and help them to be successful in getting out (and staying out) of the legal system. 

 bio_Tim.Peake.jpg Tim Peake