Dennis Siefker, LPC
Experienced Colorado therapist for complex emotional challenges
- Addictions and trauma
- Relationships and intimacy
- Depression and anxiety
About Dennis Siefker
Dennis Siefker is a licensed professional counselor (LPC) based in Colorado with three decades of clinical experience helping people navigate complicated emotional and relational challenges. He works with individuals facing depression, addiction, trauma, relationship difficulties, and life transitions, offering a steady, experienced presence to support recovery and growth.
Drawing on an integrative, compassionate approach, he tailors work to each person’s needs by combining evidence-based techniques with a respect for individual life stories. He pays particular attention to men's issues and the unique pressures that many young adults face, while also addressing complicated emotional dynamics that can affect families and intimate relationships.
Dennis emphasizes practical skill-building alongside deeper emotional healing, helping clients strengthen communication, build self-worth, and move past patterns that limit personal growth. His practice is focused on collaboration, guiding people through trauma recovery, anxiety and stress management, grief, parenting concerns, and other complex conditions with sensitivity and clarity.
Through personalized counseling informed by decades of experience, Dennis supports clients in discovering strengths, repairing relationships, and creating meaningful, sustainable change in their lives.
Drawing on an integrative, compassionate approach, he tailors work to each person’s needs by combining evidence-based techniques with a respect for individual life stories. He pays particular attention to men's issues and the unique pressures that many young adults face, while also addressing complicated emotional dynamics that can affect families and intimate relationships.
Dennis emphasizes practical skill-building alongside deeper emotional healing, helping clients strengthen communication, build self-worth, and move past patterns that limit personal growth. His practice is focused on collaboration, guiding people through trauma recovery, anxiety and stress management, grief, parenting concerns, and other complex conditions with sensitivity and clarity.
Through personalized counseling informed by decades of experience, Dennis supports clients in discovering strengths, repairing relationships, and creating meaningful, sustainable change in their lives.
Areas of Expertise
Primary Focus
Also Specializes In
Stress, AnxietyGriefIntimacy-related issuesEating disordersSleeping disordersParenting issuesAnger managementSelf esteemCareer difficultiesBipolar disorderCoping with life changesCompassion fatigueADHD
Additional Focus Areas
AbandonmentAntisocial personalityAttachment issuesAutism and Asperger SyndromeAvoidant personalityBlended family issuesBody imageCancerCo-morbidityCodependencyCommitment issuesCommunication problemsControl issuesCoping with natural or human-caused disasterDependent personalityDisruptive Mood Dysregulation Disorder (DMDD)DissociationDivorce and separationDomestic violenceDrug and alcohol addictionEmptinessFamily of origin issuesFamily problemsFatherhood issuesFirst responder issuesForgivenessGuilt and shameImpulsivityInfidelityIntellectual disabilityIsolation / lonelinessJealousyLife purposeMen's issuesMidlife crisisMood disordersNarcissismObsessions, compulsions, and OCDPanic disorder and panic attacksParanoiaPersonality disordersPhobiasPostpartum depressionPost-traumatic stressProcess addiction (porn, exercise, gambling)Seasonal Affective Disorder (SAD)Self-harmSelf-loveSex addictionSexual assault and abuseSocial anxiety and phobiaTraumatic brain injuryWorkplace issuesYoung adult issues
Therapeutic Approach
Client-Centered Therapy Cognitive Behavioral Therapy (CBT) Dialectical Behavior Therapy (DBT) Emotionally-Focused Therapy (EFT) Existential Therapy Mindfulness Therapy Motivational Interviewing Solution-Focused Therapy Trauma-Focused Therapy
Frequently Asked Questions
How much experience does Dennis Siefker have?
Dennis Siefker has 30 years of experience in clinical practice.
Is Dennis Siefker a licensed therapist?
Yes. He holds the credential LPC, which stands for Licensed Professional Counselor. License details: CO LPC 12839.
In which languages does Dennis Siefker provide therapy?
Dennis provides therapy in English.
Where is Dennis Siefker located?
Dennis is located in Colorado.
How can I work with Dennis Siefker as my therapist?
You can work with Dennis through video calls, phone sessions, live chat, or text-based messaging.
Does Dennis Siefker work with international clients?
Dennis Siefker does not currently work with international clients.
How much does therapy with Dennis Siefker cost?
The cost of therapy can vary depending on factors such as your location and the therapist's availability. Sessions are billed through a subscription that can be canceled at any time, for any reason. For current details, click the "Start Therapy" button on this page.
How can I get started with therapy?
Getting started is quick and straightforward. Click the "Start Therapy" button and complete a short questionnaire that helps match you with your therapist. Depending on availability, you can then schedule your first session, which may take place by phone, video call, live chat, or in-app messaging.
Therapeutic Approaches and Online Care
Dennis draws from client-centered therapy and cognitive behavioral therapy (CBT) to guide online work. Client-centered therapy focuses on meeting people where they are, offering empathy and responsive listening so clients can explore their values and goals; it is well suited for those seeking personal growth, stronger relationships, and support through life transitions. CBT emphasizes identifying unhelpful thought patterns and developing practical skills to manage symptoms of anxiety, depression, and stress, making it useful for people who want concrete tools to change daily functioning.
He also integrates elements of dialectical behavior therapy (DBT) when emotional regulation and interpersonal effectiveness are primary concerns. DBT teaches skills for managing intense emotions, reducing self-destructive behaviors, and improving communication in close relationships.
Finding the right approach is part of the therapeutic process, and Dennis works collaboratively with each person to determine what fits best based on their needs, goals, and preferences. He discusses options openly and adapts methods as progress unfolds.
Online therapy with Dennis is offered via video calls, phone sessions, live chat, or text-based messaging, providing flexibility for busy schedules and varied comfort levels. These options make it easier to access consistent care from licensed professionals without traveling, helping clients maintain momentum in their work while fitting therapy into everyday life.