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Dennis Siefker

Dennis Siefker

LPC

Therapist · Colorado · 30+ years of experience

Experienced LPC offering practical, collaborative therapy

Continue with Dennis

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  • 30 years experience
  • Focus on anger
  • Colorado based

About Dennis

Dennis Siefker is a Licensed Professional Counselor with 30 years of experience practicing in Colorado. He focuses on helping people who face depression, addiction, anxiety, anger, relationship strain, and other hard life challenges. He aims to create a straightforward, human space where people can talk through what matters most to them.

He uses practical tools and simple conversation to address problems. That often means working on communication skills, coping strategies, and clearer decision making. He pays attention to how past hurts affect present choices and helps people find ways to move forward.

Dennis has particular sensitivity to mens issues and the struggles young adults often face. He also works with people coping with trauma, grief, career stress, ADHD, and compassion fatigue. He helps people who want to improve self-esteem, intimacy, and day-to-day functioning.

Therapy with him blends listening and direct work. He draws on approaches such as client-centered methods, cognitive behavioral ideas, dialectical behavior strategies, and emotionally-focused practices. Sessions aim to be collaborative, with goals set together and adjusted over time.

People who want clear, practical steps and a therapist who will challenge and support them may find his style helpful. Before booking, readers should confirm current session options and any scheduling details that matter to them.

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 therapeutic approaches translate to online work

Client-Centered Therapy focuses on listening and building understanding. It helps people feel heard and supports self-directed change by following the client's priorities. Cognitive Behavioral Therapy, or CBT, looks at how thoughts and behaviors maintain problems and offers practical exercises to change patterns that feed anxiety, depression, anger, or sleep and eating problems. Dialectical Behavior Therapy, DBT, teaches emotion regulation, distress tolerance, and interpersonal effectiveness skills that are useful for strong emotions and relationship challenges.

Finding the right approach is part of the work. The therapist will talk with each person about what feels most helpful and will try approaches that match their needs and goals. Decisions about technique are collaborative and adjusted as progress is made.

The therapist's biography does not list specific online session formats. Confirm which session types are offered before booking. Many people find remote options useful because they make it easier to fit appointments around work, reduce travel time, or choose a shorter check-in when that suits the day. Online sessions can let someone keep continuity of care during life changes while working on communication, coping skills, and managing anger or other symptoms.

At a glance

Listed location
Colorado
Experience
30+ years
Credentials
LPC
Languages
English
License (Colorado)
LPC · No. 12839
NPI
1831240506

As listed by the therapist. You can check a license with the state board and an NPI with the national registry.

Frequently asked questions

What concerns does he help with?

Dennis works with a wide range of issues including depression, addictions, anxiety, trauma and abuse, anger, relationship and intimacy challenges, grief, sleep and eating problems, parenting stress, ADHD, and career concerns.

How would you describe his therapy style?

He combines listening with practical tools. Expect collaborative goal setting, skill-building from CBT and DBT ideas, and emotionally focused conversation to improve understanding and relationships.

What background does he bring to sessions?

He has three decades of clinical experience working with complex emotional dynamics and life transitions. That experience informs a straightforward, problem-solving approach in sessions.

What credentials and location are listed?

He is an LPC, Licensed Professional Counselor, practicing in Colorado.

Which languages are supported and can international clients work with him?

Sessions are offered in English. International clients are not currently accepted.

What session formats are available?

The original biography does not list specific session formats. Please confirm current session options with the service before booking.

How are fees handled?

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

How do I begin if I want to work with him?

Select the Start Therapy button, complete a short matching questionnaire, and schedule according to therapist availability.

Before you start

  • Online talk therapy is not a court-ordered or mandated anger-management course, and it does not provide attendance certificates.
  • Check that the location and license details above fit where you live.
  • If anyone is at risk of being harmed, contact emergency services or a domestic-abuse helpline first. See the support lines for the US, UK and Australia.
Dennis SiefkerContinue with Dennis