Receptionist
303-986-4197

Hours
Monday – Friday, 8:30am-5:00pm

Mark Pennick, He/Him

Doctor of Philosophy in Psychology

PSY #4627 · Active · CO DORA Licensed Provider · Verified Apr 10, 2026 · Verify →
Online therapist Mark Pennick wearing a gray sweater standing by a beige wall
4.2
Based on 35 Verified Client Ratings

Mark AT A GLANCE

Mark prefers teletherapy sessions, but can be available for in-person sessions after discussing the client's needs.

Mark specializes in trauma and neurodiversity, using ACT and CPT to help adults find strength and healing through a compassionate, mindfulness-based approach.

Get to know Mark Pennick ↓
Specializations Autism Spectrum Disorder, Developmental Disabilities, and Acceptance and Commitment Therapy View full specialty details ↓
Insurance Accepted Aetna, United/Optum, and more View full insurance details ↓
Appointment Type In-Person · Denver Video Call · Throughout Colorado View appointment type details ↓
No upcoming openings in Mark's calendar. Please contact us for help finding availability. ↓

About Mark

Gender Man
Pronouns He/Him
Ethnicity White

I began my working to help people in 2002, doing direct services for people with developmental disabilities. My career has included post-graduate work focusing on autism and resulting in a doctoral degree in Lifespan Developmental Psychology. I earned my Psychologist License in the State of Colorado during my 8 years of working with adults in the community mental health field. These diverse experiences have lead me to be adept at diagnosing mental health problems; as well as developing and delivering interventions throughout the lifespan and for the full spectrum of challenges experienced by those seeking services.

Currently, I focus on delivering Acceptance and Commitment Therapy (ACT), Cognitive Processing Therapy (CPT), and Solutions Focused Brief Therapy (SFBT). ACT is a third-wave behavioral technique that is applicable to a wide range of challenges, as well as ages. It focuses on mindfulness, cognitive flexibility, and taking valued action; that is, reacting to challenges by only, and to the exception of experiential avoidance, taking well-planned steps that get you closer to the core of what is most important in your life. CPT is an evidence based best practice developed by the Veteran’s Administration to treat PTSD and other trauma related disorders. SFBT is a therapeutic technique that is limited in the number of sessions delivered, and focuses exclusively on the strengths of the individual and in amplifying what is working to elucidate the desired outcome of therapy.

My approach to treating an individual is that every person has great and astounding strengths. This fact leads to positive outcomes in treatment and is embraced by my methods. I believe that all people are capable of excellence and that meeting each person where they are, with compassion and unconditional positive regard, is the best approach to helping others actualizing greatness.

LIFE CHALLENGES & CONDITIONS

POPULATIONS & COMMUNITIES SERVED

THERAPY APPROACHES USED

Where Mark Offers Appointments

In-Person Therapy in Colorado: Denver

Online Therapy

Mark Pennick offers HIPAA-compliant, encrypted video therapy sessions through Westside Behavioral Care. In compliance with Colorado state licensing requirements, video sessions are only available to clients physically located in Colorado at the time of their appointment. Prior to your first session, Mark Pennick will send you everything you need to join your secure video call.

In-Network Insurance Accepted by Mark

The insurance plans that Mark accepts are below. Don’t see your insurance plan listed? Find your insurance plan here to see which therapists are in-network.


Frequently Asked Questions About Scheduling with Westside

Starting therapy can come with a lot of questions, and that’s completely normal. Here are a few quick answers to help you feel more comfortable before getting started.

Help Booking With Mark

Have a question or want help before booking? Use the form below to connect with our support team. We’ll follow up, typically within a few hours.

Professional Credentials

License Verification

Mark Pennick

Active · CO DORA Licensed Provider

License PSY #4627
Status Active
Expires Aug 31, 2027
Degree ~Doctorate of Philosophy
Last Verified Apr 10, 2026
Verify on DORA's Website →

In-Person & Video Sessions Service Area

Meet with Mark Pennick in-person or via secure video throughout Colorado. In-person appointments are available to clients in Aurora, Denver, Westminster, and surrounding areas in Greater Denver Metro. Nearby clients find the commute well worth it.

Why Choose a Westside Therapist?

Westside Behavioral Care has been locally owned and serving Colorado communities since 1998. About Westside Behavioral Care