LOCAL HEALTHCARE PROVIDERS
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24 providers
Availability last updated 11/14/2026
Julie Mack, PhD
Psychologist
58 Ash Court
Longmont, CO 80503
Marilyn Maher, PhD
Psychologist
2040 Terry St.
Longmont, CO 80501
Sunda Tebockhorst, PhD
Psychologist
588 N Hwy 287
Suite 200
Lafayette, CO 80026
Zachary Sussman, PhD
Psychologist
777 29th Street, Suite 200
Boulder, CO 80303
Hillary is a licensed clinical social worker who is deeply committed to supporting individuals in recognizing their resilience, strength, and inherent worth as they work toward meaningful change. She brings a compassionate, client-centered approach to her work, grounded in the belief that everyone has the capacity to heal and grow.
She earned her undergraduate degree in Human Services with a minor in Criminal Justice from Elon University in 2003. Her career in mental health began in 2006, working with adults living with chronic mental illness in a day program setting. She went on to manage residential services before pursuing her Master of Social Work degree from the University of Maryland, Baltimore, where she graduated in 2013 with a clinical specialization and sub-specialization in mental health.
Since then, Hillary has gained extensive experience in a variety of settings, including assertive community treatment, child welfare, and addiction treatment. Since 2018, she has focused primarily on substance use treatment, providing individual and group therapy, as well as leading intensive outpatient programs.
Her therapeutic approach is strengths-based and rooted in evidence-based practices, including motivational interviewing, cognitive behavioral therapy (CBT), dialectical behavior therapy (DBT), solution-focused therapy, and trauma-focused CBT (TF-CBT). She is dedicated to helping clients build skills, process their experiences, and thrive.
Originally from the East Coast, Hillary relocated to Colorado in 2018. Outside of work, she enjoys live music, road trips, camping, and photography.
Hillary Tsucalas
Social Worker
10160 W 50th Ave
Suite 4
Wheat Ridge, CO 80033
Karina Sweitzer, LCSW
Psychologist
2121 Midpoint Drive
Suite 201
Fort Collins, CO 80525
Carol McLennan, LPC
Psychologist
300 South Jackson Street
Suite 250
Denver, CO 80209
Timothy Hicks, MS, LPC, LMFT
Psychologist
300 South Jackson Street
Suite 250
Denver, CO 80209
Marilyn Duman, PsyD
Psychologist
5595 E Custer Pl
Denver, CO 80246