Meet Our Addiction Treatment Staff


Charles Shuman, MD

Medical Director

(303) 955-5599

Sheila Ash
Marty Rein, Ph.D, LPC, CACIII

Clinical Director

Laura Whitcomb, MA, LPCC


Karli Jo Lamb, MA, LPCC. CACII

Primary Therapist

Keith Colton, LCSW

Clinical Lead

Kathleen Voelsing, BCN


Stepheny Chapple, BA, MSCJ, NLC
Faith Brandt, LPC
Janada Halbisen-Gibbs
Julia Miguel

Music Therapist

Andrew Tomey

Housing Coordinator

(877) 212-1238

Ethan Castro, MBA, JD

Chief Executive Officer

(303) 955-5599

Cortland Mathers-Suter, MSSA

Founder, COO

(303) 955-5599

Donna Segrin

Director of Admissions

(877) 736-9727

Laura Beth

Alumni Coordinator

Liz Kane

Senior Outreach Manager

Angelica Luiz

People Operations Manager

(303) 955-5599

Karen Rodriguez

Administrative Assistant

Erin Greney

Community Outreach and Admission

Steven Brier

Marketing Director

Connect with Our Addiction Treatment Staff Today

Ready to begin your recovery journey? Have questions for a member of our addiction treatment staff? Learn more about AspenRidge Recovery Fort Collins today! Whether you want to begin the admissions process or verify your insurance, it’s easy to contact AspenRidge Recovery Fort Collins. Call today at (866) 957-6941, we can’t wait to begin this journey with you!