Comprehensive, compassionate mental health care and therapy for individuals seeking understanding, acceptance, and expert guidance through life’s most challenging moments.
Serving a diverse and inclusive population of adults with a wide variety of diagnoses and specializing in the needs of the LGBTQIA2S+, neurodiverse, and underrepresented communities in Colorado with dignity, expertise, and genuine care.
When Others Say No, I Say “I Can Help”
Finding the right therapist shouldn’t be hard. Too many people are turned away when their needs fall outside a therapist’s comfort zone. At Full Spectrum Therapeutic Services, I believe everyone deserves access to quality mental health care — no matter how complex your situation may seem.
While many therapists specialize in narrow areas, we offer true full-spectrum care. From detailed diagnostic assessments to personalized treatment plans, we have the knowledge and experience to handle a wide variety of complex and co-morbid diagnoses. Our approach combines the latest research with time-tested therapeutic techniques to give you answers, not guesswork.
I proudly specialize in supporting LGBTQIA2S+ individuals, neurodiverse clients, and underrepresented populations who deserve therapists that truly understand their lived experiences. But my doors are open to anyone seeking compassionate, expert care. You don’t have to fit into a box to get the help you need here.
My practice is built on rigorous diagnostic practices and evidence-based treatment — but I never forget that behind every diagnosis is a person. I take the time to understand your unique story, your specific concerns, and your goals for therapy. This isn’t cookie-cutter care; it’s personalized support designed around you.
A Process Designed Around Your Needs
Every person’s mental health journey is unique. That’s why I don’t believe in one-size-fits-all therapy. My approach is thorough, personalized, and grounded in both science and compassion.
I begin with a no-pressure conversation where you can share what brings you to therapy and ask any questions you might have. This is your chance to see if we’re the right fit before making any commitments.
If we decide to move forward together, I’ll conduct a thorough diagnostic assessment. This isn’t a checkbox exercise — it’s a deep dive into understanding your unique situation, history, and needs. I use evidence-based diagnostic tools to ensure we’re seeing the complete picture.
Based on our assessment, I’ll develop a treatment plan tailored specifically to you. This plan will outline our approach, set clear goals, and give you a roadmap for your therapeutic journey. You’ll be involved every step of the way.
Therapy isn’t static — as you grow and change, your treatment should evolve too. I’ll regularly check in on your progress, adjust our approach as needed, and ensure you’re moving toward your goals at a pace that feels right for you.
I believe that effective therapy requires three things: expertise, empathy, and honesty. You need a therapist who knows what they’re doing, who genuinely cares about your wellbeing, and who will give you straightforward feedback even when it’s difficult. That’s the foundation of everything I do.
The modalities for therapy I use are CBT, CPT, ACT.
If you’re not sure whether I can help with your specific situation, reach out. Chances are, I can.
Colorado Licensed Clinical Psychologist 4627
(He/Him)
Mark has dedicated his career to helping people find clarity in their most confusing moments. From his early days delivering direct care to individuals with development disabilities — where he learned the importance of meeting people where they are — to his extensive education and training in mental health, Mark’s path has been guided by one simple belief: everyone deserves to be heard, understood, and supported.
What sets Mark apart isn’t just his impressive credentials or years of experience — it’s his genuine commitment to doing the hard work that each unique individual deserves. When clients come to him after being turned away elsewhere, Mark doesn’t see an impossible case. He sees a person who deserves answers.
Mark brings the highest level of scientific knowledge and diagnostic precision to every session. His extensive education has equipped him with a comprehensive toolkit for assessment and treatment, allowing him to identify issues that others might miss and develop treatment plans that actually work.
But expertise alone isn’t enough. Mark prides himself on his ability to connect, relate to, and comfort every client who walks through his door. He has particular expertise working with LGBTQIA2S+ individuals, neurodiverse clients, and those from underrepresented communities — people who have too often been misunderstood or underserved by the mental health system.
When he’s not in session, Mark is a devoted family man who values work-life balance. He believes that taking care of himself —whether that means spending quality time with his children, traveling with his family, or brewing his own beer — makes him a better therapist. He brings that same philosophy to his work with clients: healing isn’t about perfection, it’s about building a life that feels authentic and sustainable for you.
Mark Pennick, P.h.D., LP
(he/him)
Colorado Licensed Clinical Psychologist 4627
Starting therapy takes courage. I make the logistics as simple as possible so you can focus on what matters: your healing and growth.
Prompt response to your inquiry (usually within 24 hours)
A welcoming, judgment-free first conversation
Clear information about my process, fees, and what therapy will look like
No pressure — if we’re not the right fit, I’ll help you find someone who is
I am currently accepting new clients and typically have availability within 1-2 weeks for initial consultations.
Investment in Your Mental Health
I believe quality mental health care should be accessible. Here’s what you need to know about the financial side of therapy.
Please note: I do not accept Medicaid at this time.
I’m happy to verify your benefits before your first appointment so you know exactly what your costs will be. Once you have completed the required intake documents this is available on the next business day.
• Complete confidentiality (no insurance records)
• No diagnosis required for insurance purposes
• More flexibility in treatment approach and session length
• No limitations on number of sessions
I accept cash, check, and all major credit cards. Payment is due at the time of service.
As required by federal law, I provide a Good Faith Estimate of costs for clients not using insurance. Just ask and I’ll provide this information before your first session.
I’m here to help navigate the sometimes confusing world of mental health benefits. Don’t let insurance questions stop you from reaching out — I’ll figure it out together.
Whether you’re struggling with something specific or just feel like you need support navigating life’s challenges, therapy can help. At Full Spectrum Therapeutic Services, you have a therapist who combines deep expertise with genuine compassion — someone who will meet you exactly where you are and help you get to where you want to be.
You’ve already taken the first step by researching your options. Now take the next one.
Have questions first? Call me at 720-243-2145 or email markpennick@gmail.com
Taking the first step is often the hardest part. There’s no commitment required to reach out and see if I’m the right fit for you.
2373 Central Park Blvd. Ste. 100
Denver, CO 80238
2373 Central Park Blvd. Ste. 100
Denver, CO 80238
