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LPC

Dennis Siefker, LPC

  • Experience30 years
  • LocationColorado
  • Focus areasADHD, Addictions, and Relationship
  • Therapy approachesClient-Centered Therapy and Cognitive Behavioral Therapy (CBT)
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About Dennis

Dennis Siefker is an LPC practicing in Colorado with 30 years of clinical experience working with adults facing a broad range of concerns. He has helped people cope with depression, addiction, anxiety, trauma and abuse, grief, bipolar mood concerns, stress, ADHD, and relationship and intimacy-related issues.

Background and approach

His background also includes work with eating and sleeping problems, career difficulties, compassion fatigue, and a wide set of personality and attachment-related challenges. He draws from several evidence-informed approaches to shape treatment, blending client-centered principles with cognitive-behavioral tools, dialectical behavior strategies, emotionally focused techniques, and existential themes when relevant.

This mix allows him to tailor sessions to a person’s current needs while keeping attention on long-term meaning and coping. Sessions emphasize practical skills, clearer communication, and building self-understanding to support change.

People who choose him can expect a collaborative, respectful stance that honors individual experience and preferences. He aims to help clients identify strengths, work through difficult transitions or losses, and create sustainable ways to manage symptoms and pursue personal goals.

Therapeutic Approaches and Online Options

Client-centered therapy emphasizes understanding the person’s perspective and building a trusting therapeutic relationship; it focuses on empathy, active listening, and supporting the client’s own goals and pace of change. Cognitive Behavioral Therapy (CBT) helps identify and shift unhelpful thought patterns and behaviors, offering practical strategies for anxiety, depression, and stress-related problems. Dialectical Behavior Therapy (DBT) provides concrete skills for emotion regulation, distress tolerance, and improved interpersonal effectiveness when emotions feel overwhelming.

Choosing the right approach is a collaborative process. The therapist works with each person to explore which methods fit their needs, goals, and preferences, and adapts the plan over time based on progress and feedback. This collaborative stance helps ensure treatment stays relevant and responsive.

Online sessions are offered via video, phone, live chat, or text-based messaging, which can make therapy more flexible for busy schedules or those who prefer remote options. These formats allow licensed professionals to deliver the same therapeutic techniques and skills practice used in person while accommodating different communication styles and time constraints, supporting continuity of care and easier access for clients in Colorado.

Frequently asked questions

What concerns does Dennis commonly address?
The practice covers many issues including addictions, depression, anxiety, trauma and abuse, relationship and intimacy-related problems, grief, bipolar concerns, ADHD, and related stressors.
What is his therapeutic style and approach?
He uses a collaborative, client-centered stance paired with methods from CBT, DBT, EFT, and existential work to tailor interventions that match a client’s needs and goals.
How much clinical experience does he have?
He brings 30 years of experience working with a wide range of emotional, behavioral, and relational issues.
What credentials and location are listed?
The clinician is an LPC licensed in Colorado with licence number CO LPC 12839 and practices from that state.
Which languages are available and can international clients join?
Sessions are offered in English only and international clients are not currently accepted.
What session formats are offered for online work?
Clients can choose among video calls, phone sessions, live chat, or text-based messaging according to their preferences.
How are fees and subscriptions handled?
Cost varies with location and therapist availability and sessions are provided through a subscription model that can be canceled at any time.
What are the steps to begin working together?
Begin by selecting the Start Therapy button, completing a short matching questionnaire, and scheduling according to the therapist’s availability.

Areas of expertise

Primary focus

AddictionsRelationship issuesFamily conflictsTrauma and abuseDepression

Also works with

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 approaches

Client-Centered TherapyCognitive Behavioral Therapy (CBT)Dialectical Behavior Therapy (DBT)Emotionally-Focused Therapy (EFT)Existential TherapyMindfulness TherapyMotivational InterviewingSolution-Focused TherapyTrauma-Focused Therapy

Experience

30+ years

Licensed

Colorado

Languages

English

What Dennis can help with

Dennis Siefker works with clients on addictions, relationship issues, family conflicts, trauma and abuse, and depression.

Dennis works with individuals through complex emotional landscapes.

Dennis works with depression, addiction, and relationship dynamics.

How Dennis approaches therapy

Dennis's clinical approaches include Client-Centered Therapy, Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), Emotionally-Focused Therapy (EFT), Existential Therapy, Mindfulness Therapy, Motivational Interviewing, and Solution-Focused Therapy.

Experience and training

Dennis is a Licensed Professional Counselor practicing in Colorado, with 30 years of clinical experience.

Therapy style

Dennis aims to empower individuals to discover their inner strengths.