Dennis Siefker, LPC
Experienced Colorado counselor for growth and change
- 30 years experience
- Trauma and addiction support
- Relationship and family focus
About Dennis Siefker
Dennis Siefker is a Licensed Professional Counselor (LPC) in Colorado with 30 years of experience supporting people through challenging seasons of life. His work centers on helping clients make sense of complex emotions and patterns, with a focus on concerns such as depression, addiction, relationship stress, trauma and abuse, and the desire for personal growth.
He brings a compassionate, whole-person perspective to therapy and draws on decades of clinical experience to help clients navigate difficult transitions, ongoing anxiety, and painful relationship dynamics. Whether someone is feeling stuck, overwhelmed, or simply looking for deeper self-understanding, he offers a steady, supportive space where change can be explored at a realistic pace.
Dennis approaches each person with respect for their unique story and pays close attention to the emotional and relational factors that shape daily life. He is attentive to men’s issues, the pressures and identity questions that can arise in young adulthood, and the layered nature of long-standing emotional challenges. In therapy, he helps clients strengthen communication, build self-worth, and identify the obstacles that interfere with growth and well-being.
Through collaborative, individualized counseling, Dennis aims to help clients reconnect with their strengths, process earlier wounds, and develop practical, meaningful pathways toward a more fulfilling life.
He brings a compassionate, whole-person perspective to therapy and draws on decades of clinical experience to help clients navigate difficult transitions, ongoing anxiety, and painful relationship dynamics. Whether someone is feeling stuck, overwhelmed, or simply looking for deeper self-understanding, he offers a steady, supportive space where change can be explored at a realistic pace.
Dennis approaches each person with respect for their unique story and pays close attention to the emotional and relational factors that shape daily life. He is attentive to men’s issues, the pressures and identity questions that can arise in young adulthood, and the layered nature of long-standing emotional challenges. In therapy, he helps clients strengthen communication, build self-worth, and identify the obstacles that interfere with growth and well-being.
Through collaborative, individualized counseling, Dennis aims to help clients reconnect with their strengths, process earlier wounds, and develop practical, meaningful pathways toward a more fulfilling life.
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 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 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 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.
Therapeutic Approaches That Translate Well to Online Support
Dennis Siefker draws from established approaches that can be effective in an online setting. Client-Centered Therapy focuses on creating a supportive, respectful space where clients can explore what they are feeling and what they want, which can be especially helpful when working through life transitions, grief, or questions of identity and self-esteem.Cognitive Behavioral Therapy (CBT) helps clients notice how thoughts, emotions, and behaviors interact, then practice new ways of responding. This approach is often useful for concerns like anxiety, depression, stress, and coping with change. Dialectical Behavior Therapy (DBT) emphasizes practical skills such as emotion regulation, distress tolerance, and communication, which many people find helpful when navigating intense emotions, relationship conflict, or impulsive patterns.
Finding the right fit is part of the process. Dennis works collaboratively with clients to clarify goals and preferences, then tailors therapy based on what is most relevant to the client’s needs over time.
Online therapy also makes support more accessible and flexible. Clients can meet with Dennis through video calls or phone sessions, and can also use live chat or text-based messaging, making it easier to stay engaged between sessions and fit therapy into a busy schedule.