AspenRidge Recovery Staff

AspenRidge Recovery consists of a professional, experienced staff that can help you overcome addiction.

Photo of Jeff Burt

Jeff Burt, LPC, LAC

Clinical Director

Phone: (303) 955 5599

Jeff holds a Master’s degree in Counseling Psychology with specialized training in Adlerian Psychology, Motivational Interviewing, Medication-Assisted Treatments, Cognitive-Behavioral Therapy (CBT) and Trauma- Focused CBT. He has been passionately serving diverse populations of people struggling with addiction and mental health issues for over 14 years. He is very active in the recovery community and is a strong advocate for mental health services. He has long term experience as a clinician and a manager in a variety of treatment settings, including Adult Outpatient, Intensive Outpatient, Therapeutic Communities, and Sober Living homes. His work experiences include Hazelden-Chicago, University of Colorado, and Arapahoe/Douglas Mental Health.

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Andrew Tomey

Client Services Liaison

Phone: (877) 212-1238

Andrew is in long-term recovery after getting sober in an extended care treatment program several years ago. After finding relief in the work he put into himself while in treatment, he decided to help others find the same hope and serenity that he did. After working for some time in client housing as a Support Staff member he was promoted to Assistant Medical Coordinator. Helping others being his passion, Andrew decided that he could make more of a difference working in client housing and moved to Fort Collins to become the Client Services Liaison at AspenRidge North. The changes Andrew has made over his years of recovery and work in the treatment field have made this not just a job, but a real opportunity to make a difference in the lives of those experiencing the same lows that addiction brought him to.

Photo of Cortland Mathers-Suter

Cortland Mathers-Suter, MSSA

Managing Director

Phone: (877) 736-9727

Cortland has held many positions in the treatment field from house manager to clinician to administrator. His academic background is in both education and social work, which allows him to bring a unique set of skills to this position. He currently holds a Masters Degree in Social Work from Case Western Reserve University. Cortland uses his own addiction recovery coupled with his educational and professional experience to help clients succeed. Similarly Cortland uses this skill-set to create lasting connections with local agencies, ensuring that clients receive a high level of continuity in their care over the course of their treatment.

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Nikki Summers MSW, CACII

Lead Clinician

Nikki received her Bachelor of Science in Social Work from the University of Texas at Austin in 1995. Her excitement to pursue her career in social work led her to graduate school immediately following her undergraduate degree. She completed her Master of Science in Social Work in 1996. She has continued to maintain her passion working in the field for 20 years. Nikki specializes in treating trauma, mood disorders, and addictions. She has 15 years of experience working with children and families in an inpatient and outpatient setting, seven of those years she also worked in private practice, providing treatment for children, adolescents, teens, adults, couples and families. She has facilitated various types of group therapy during her years of practice, including psychoeducational and process groups. In her practice, she incorporates somatic experiencing, mindfulness, guided meditation, trauma-focused therapy, and the Satir and Gestalt models, in addition to other various modalities. She is currently working toward becoming a Certified Addictions Counselor II. Her primary goal is to assist individuals in gaining a well-rounded sense of self-worth and love and compassion for themselves.

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Whitney Walkenhorst, MA, CACII

Primary Therapist

Whitney received her Bachelor of Science in Social work from Colorado State University in May 2013. Knowing she wanted to become an addictions therapist, she immediately began working towards her Master’s Degree in an accelerated program. She received her Master of Social work in May 2014. During her schooling, she began working towards gaining her Certified Additions Counselor II and obtained her certification in February 2016. Whitney began her career working with adults with developmental disabilities and quickly became interested in the mental health profession. She found her passion working with clients in the criminal justice system, who were struggling with both mental health and substance abuse issues. She specializes in working with adults with trauma, mindfulness-based interventions and client-centered approaches. She is a Fort Collins native and is thankful for the opportunity to serve her community.

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Karli Jo Lamb MA, LPC, CAC

Primary Therapist

Karli received her Bachelors degree in Human Development and Family Studies which ignited her passion for helping people and families. She received a Masters in Counseling at Colorado Christian University and is currently on the pathway for clinical licensure. Karli has experience working with individuals and families in traditional outpatient and inpatient programs as well as in home addiction treatment services. Karli promotes an integrative approach to therapy combining attachment, interpersonal, and mindfulness-based cognitive behavioral modalities to promote whole-person recovery and wellness. Karli is currently in process of becoming CAC II certified.

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Donna Segrin

Marketing Director

Phone: (877) 736-9727

After 10 years of mere existence, run down and destroyed by drugs, alcohol, bone chilling anger and cynicism, Donna was granted a new life filled with grace she felt she probably didn't deserve. Through a 12-step based program she found the love locked away deep within herself, a love she believes we all possess. Today, Donna's life is far beyond anything she could've fathomed. She's found a passion in walking with other devastated woman, through the fears that engulf alcoholics and addicts on their journey to serenity.

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Emily Byrne

Billing Director

Phone: (303) 955-5599

Emily began working in substance abuse treatment in 2012. Driven by her personal experience in addiction recovery, she strives to help others through the process. Emily was a vital member of the housing team for a halfway house in Prescott, AZ. She later worked as an administrative assistant where she became skilled in billing, human resource essentials, policies and procedures, and state licensing. Emily brings a multitude of skills to the AspenRidge Recovery team and ensures seamless communication between all departments.