Dennis Siefker, LPC
Experienced Colorado counselor for growth and resilience
- Trauma and addiction support
- Relationship and family guidance
- Anxiety and depression help
About Dennis Siefker
Dennis Siefker is a Licensed Professional Counselor (LPC) in Colorado with 30 years of experience helping people work through difficult seasons of life and the emotional weight that can come with them. His work centers on supporting clients facing concerns such as depression, addiction, trauma and abuse, relationship and family stress, and periods of change that can leave someone feeling stuck or overwhelmed.
He brings a compassionate, whole-person perspective to counseling, offering steady support as clients sort through anxiety, conflict in close relationships, grief, or a desire for deeper self-understanding and growth. Dennis approaches each person as an individual, taking time to understand personal history, current challenges, and the patterns that may be shaping thoughts, emotions, and choices.
With particular attentiveness to men’s issues, young adult concerns, and complex emotional dynamics, he helps clients strengthen communication, build self-worth, and identify the barriers that get in the way of healthier coping and more satisfying connections. His style is collaborative and tailored, with the goal of helping clients recognize their strengths, process past hurts, and move toward a life that feels more grounded and meaningful.
He brings a compassionate, whole-person perspective to counseling, offering steady support as clients sort through anxiety, conflict in close relationships, grief, or a desire for deeper self-understanding and growth. Dennis approaches each person as an individual, taking time to understand personal history, current challenges, and the patterns that may be shaping thoughts, emotions, and choices.
With particular attentiveness to men’s issues, young adult concerns, and complex emotional dynamics, he helps clients strengthen communication, build self-worth, and identify the barriers that get in the way of healthier coping and more satisfying connections. His style is collaborative and tailored, with the goal of helping clients recognize their strengths, process past hurts, and move toward a life that feels more grounded and meaningful.
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 as a therapist.
Is Dennis Siefker a licensed therapist?
Yes. Dennis Siefker is a Licensed Professional Counselor (LPC). His Colorado license is CO LPC 12839.
In which languages does Dennis Siefker provide therapy?
Dennis Siefker provides therapy in English.
Where is Dennis Siefker located?
Dennis Siefker is located in Colorado.
How can I work with Dennis Siefker as my therapist?
You can work with Dennis Siefker through video calls, phone sessions, live chat, or text-based messaging, depending on what feels most comfortable and what is available.
Does Dennis Siefker work with international clients?
No. Dennis Siefker does not currently work with international clients.
How much does therapy with Dennis Siefker cost?
The cost of therapy can vary based on factors like 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 to help 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.
Practical Approaches, Flexible Online Support
Dennis Siefker draws from several evidence-informed methods to help clients make sense of what they are experiencing and build workable next steps. Client-Centered Therapy focuses on understanding the individual’s perspective and creating a supportive space where goals, values, and concerns can be explored at a steady pace, which can be especially helpful during life transitions, relationship strain, or grief.Cognitive Behavioral Therapy (CBT) is a structured approach that looks at how thoughts, feelings, and behaviors interact. It can help clients notice unhelpful patterns and practice new skills for concerns like anxiety, depression, stress, and coping with change. Dialectical Behavior Therapy (DBT) adds practical tools for emotion regulation, distress tolerance, and communication, which many people find useful when emotions feel intense or relationships feel difficult to navigate.
Finding the right approach is part of the process. Dennis works collaboratively with clients to clarify what they want from therapy and to choose strategies that fit their needs, goals, and preferences over time.
Online therapy can make it easier to stay consistent with support. Sessions may take place through video calls or phone sessions, and clients can also use live chat or text-based messaging for added flexibility between appointments.