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Dennis Siefker
Experience
30 years
Based in
Colorado
Sessions
Online
Languages
English

Therapist · Colorado

Dennis Siefker

LPC

Experienced Colorado counselor focused on practical change

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License and NPI on record

LPC
Colorado · 12839
NPI
1831240506

As listed on the therapist's profile. A license can be checked with the state board, and an NPI with the national NPI registry.

  • 30 years experience
  • Calm practical style
  • Relationship and trauma focus

About Dennis

Dennis Siefker is a Licensed Professional Counselor (LPC) in Colorado with 30 years of clinical experience. He focuses on helping people manage depression, addiction, anxiety, trauma, and relationship concerns. He aims to create a calm, straightforward space where people can talk through what feels overwhelming and find practical next steps.

He uses an approach that centers the person's experience and values. Sessions often involve listening closely, reflecting back what’s happening, and working together on small, doable changes. He draws on methods from client-centered therapy to prioritize the person’s goals and sense of agency.

Dennis also integrates Cognitive Behavioral Therapy to identify unhelpful thinking and try different behaviors. He may introduce Dialectical Behavior Therapy skills for managing intense emotions and coping in the moment. Emotionally-Focused Therapy ideas can guide work on connection and attachment when relationships are a source of pain.

Over three decades he has supported people facing a wide range of concerns, including grief, parenting stress, eating and sleeping problems, ADHD, and compulsive behaviors. He pays attention to how past wounds like abandonment and attachment issues show up now. His style is steady, practical, and focused on what helps day to day.

People who come to him often want clear communication strategies, stronger self-esteem, and calmer responses to stress. He works collaboratively to set goals and to try approaches that fit each person’s life and values.

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

Credentials

Colorado

Languages

English

How Dennis Uses Practical Approaches Online

Client-centered therapy puts the person’s goals first and focuses on listening and support. In practice this means sessions start with what matters most to the individual, and the therapist mirrors concerns back so goals become clearer. Cognitive Behavioral Therapy (CBT) breaks problems into thoughts, feelings, and actions; it helps people try specific skills to change unhelpful thinking and behavior. Dialectical Behavior Therapy (DBT) offers tools for managing intense emotions, handling conflict, and building tolerance for distress.

Finding the right approach is part of the work together. Dennis will discuss the options, try methods that fit the person’s needs, and adjust based on what helps. The process is collaborative, with choices guided by goals, preferences, and how someone responds to early sessions.

Confirm the current session options before booking, as formats are not listed here. Online therapy can make it easier to fit sessions into a busy life, like attending from a quiet room during a break or avoiding travel time. It can also allow for shorter check-ins when needed and for practicing skills between meetings. Licensed professionals will work with clients to pick a session rhythm that fits their daily routines and responsibilities.

Frequently asked questions

What concerns does Dennis address?

He works with a wide range of issues such as depression, addiction, anxiety, trauma, relationship and intimacy challenges, grief, anger, eating and sleeping problems, ADHD, and stress related to life changes.

How would you describe his therapeutic style?

His style is client-centered and practical. He listens closely, helps people set clear goals, and uses exercises to try new ways of thinking and behaving.

What kind of experience does he bring?

He has 30 years of professional experience working with adults through complex emotional and behavioral challenges.

What credentials and location are listed?

He holds an LPC credential (Licensed Professional Counselor) and practices in Colorado.

Which languages are sessions offered in?

Sessions are offered in English.

Can international clients work with him?

International clients are not currently accepted.

How are sessions priced?

Cost varies with location and therapist availability; sessions use a subscription that can be canceled at any time.

What are the steps to begin working together?

Start by selecting the Start Therapy button, complete a short matching questionnaire, and then schedule sessions according to therapist availability.

Before you get in touch

Therapists listed here offer talking therapy online. A profile is not a diagnosis of you or of anyone in your life, and no therapist can promise how a relationship will turn out.

If you are in danger, or someone is hurting or threatening you, contact emergency services or a domestic-abuse helpline. The numbers are at the foot of this page.

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