Thank you patients for helping us win the Best of Mile High award for Mental Wellness!

Meet The Team 


Certified Registered Nurse Anesthetist, CRNA, Clinic Director

Christopher Perez is an experienced CRNA, Clinical Director and Cofounder of Axis Integrated Mental Health. He spent many years caring for kids as a pediatric CRNA in Colorado, in Peru during annual medical mission trips. He worked in a community access hospital ICU before entering the anesthesia profession.  

Chris’ passion for helping others drove him to cofound Axis Integrated Mental Health with his wife, Liesl Perez, to help increase the availability of mental health services in Colorado. With Chris’ leadership, Axis has grown to over 20 employees, 3 locations, has treated thousands of patients, underwritten over $100K in free mental health care for the communities it serves, and become a center of excellence for the most difficult-to-treat depression, anxiety, PTSD, OCD, bipolar, and other mental health conditions.  

You can read about Chris' own journey with mental health in his blog post "Therapy is For Everyone - Except me', And Other Lies I've Told Myself".

Liesl Perez

Chief Marketing Officer and Cofounder

Liesl Perez spent over 20 years in corporate marketing, launching one of the first generative AI prototypes, SDL Content Assistant, and leading corporate marketing teams at Mapbox, Hubilo, TTEC, and SDL. Her passion for unlocking human potential, diversity, and inclusivity led her to cofound Axis Integrated Mental Health in 2020 with her husband, Chris Perez. Over the last three years, Axis has grown to over 20 employees, 3 locations, and underwritten over $100K in free mental health care for the communities it serves. In addition to being a co-founder, Liesl is TMS certified and enjoys treating patients with this innovative new technology and the power of storytelling.  When not working with patients at her clinic, she also serves as a fractional CMO, working with a diverse roster of companies worldwide.

Liesl believes strongly in destigmatizing mental illness and she shares her own depression and anxiety journey regularly as a guest speaker on podcasts and with her husband in this interview. You may sometimes see her at the front desk, answering questions on social media or picking up the phone when people call-in, treating patients with TMS and storytelling, or even holding your hand during particularly rough treatments. 


Clinical Lead

Dr. Jamie Teunis is a board-certified psychiatric nurse practitioner. As the Clinic Lead, she is responsible for supporting our providers to ensure an exceptional and consistent standard of care for all of our patients.

Dr. Teunis specializes in a holistic approach to patient care, with treatment plans tailored to each patient’s individual needs. She is an expert at providing integrated psychiatric care to a wide range of different patient populations.

Ross Van Allen, DNP

Psychiatric Mental Health Nurse Practioner

Ross Van Allen is a board-certified Psychiatric/Mental Health Nurse Practitioner. After graduating from the University of Iowa graduate program, he started working at a clinic offering ketamine treatments, sparking his excitement for “out of the box” therapies, such as ketamine and TMS. He is dedicated to being a holistic provider who likes to examine all aspects of each individual’s livelihood, then utilizes lifestyle changes and/or a combination of tools (i.e., traditional medications, ketamine, etc.) to come up with a treatment plan tailored to every patient.

Ross and his partner have lived in Iowa their entire lives and made the move to beautiful Colorado to join Axis Integrated Mental Health. They bring with them two beloved two fur-kids: Floof, the cat and Luna, the dog.

Pscyhiatric care giver Ross Van Allen is depicted in this photo
Pictured is Jessica Psonak who delivers Psychiatric care in Colorado.


Psychiatric Mental Health Nurse Practioner

Dr. Psonak sees adolescent and adult clients for a variety of mental health needs, including treatment-resistant depression, anxiety, mood disorders, ADHD, and PTSD, amongst others. Dr. Psonak has been in practice for 11 years. She received her Doctorate of Nursing Practice-Psychiatric Mental Health Speciality from the University of Maryland School of Nursing and enjoys being outdoors, traveling, and spending time with family when she's not delivering exceptional psychiatric care at Axis Integrated Mental Health. 

Kara Guglielmo

Psychiatric Mental Health Nurse Practioner

Kara Guglielmo, PMHNP, is a valued addition to our clinic, bringing with her experience in emergency psychiatric care at Denver Health and inpatient care at Denver Springs. Her background in managing acute mental health crises equips her to address urgent needs with skill and compassion. Kara's expertise in this critical area enhances our clinic's ability to provide comprehensive care for individuals experiencing mental health challenges, including military personnel and veterans. Kara received her MSN from Walden University and was a registered nurse in the psychiatric emergency department at Denver Health prior to coming to Axis Integrated Mental Health. In her free time, Kara volunteered for nonprofits advocating for the needs of the homeless.

Vicki Grossman


Dr. Vicki Grossman has spent the last 25 years working in healthcare and holds a PhD from the University of Colorado. Specializing in addressing depression, anxiety, mood changes, ADHD, grief, and weight management, her approach is rooted in holistic psychiatric care and evidence-based medicine. Drawing from a diverse background in healthcare, including psychiatry, critical care, emergency, and trauma medicine, she prides herself on her ability to bridge the gap between medical and mental health care, ensuring a thorough understanding of psychopharmacology and safe medication management. Through transpersonal caring, mindfulness techniques, behavior modification, and mind/body/spirit integration, she provides integrative, psychiatric care that honors each individual's unique wholeness.


McKenna Bagan

 Psychiatric Mental Health Nurse Practitioner

McKenna Bagan is a board-certified Psychiatric Mental Health Nurse Practitioner and a board-certified Women’s Health Nurse Practitioner. She started her career in OBGYN, but she soon discovered the glaring need for quality mental health care in her community, as well as her passion for psychiatry.

Since then, she has been providing psychiatric care across the lifespan from children to adults of all ages. She has specialized knowledge in hormonal issues and how these influence women’s mental health. McKenna is dedicated to helping her patients pursue mental wellbeing from an integrative approach.

Pictured is McKenna Bagan who delivers psychiatric care in denver.


Psychiatric Mental Health Nurse Practioner

Dr. Bryce Thacker began his career as an advanced practice nurse in family medicine. He then identified his passion for mental health and worked as a primary mental health provider for six years. 

Dr. Thacker then returned to school to gain an even deeper knowledge of psychiatric care. Axis Integrated Mental Health is happy to have Dr. Thacker and his years of experience as part of our team. 

Read more about Dr. Bryce Thacker and see his dog Wuf.E on our blog!

Ashley Howell

 Psychiatric Mental Health Nurse Practitioner

Ashley Howell is a board-certified family psychiatric nurse practitioner with over a decade of experience in mental health and critical care. Ashley is an Armed Service veteran, which gives her unique insight and understanding into veteran and military mental health issues. 

Ashley is passionate about working with patients who are going through a transition phase in life, such as high school students, college students, military members, and postpartum women. She is an LGBTQ+ ally and provider.

Ashley Howell, a Psychiatric Nurse Practitioner (PMHNP) and military veteran, discusses military mental health and her personal experiences transitioning to civilian life after discharge.
Holistic psychiatry provider Sarah Paston is pictured.

Sarah Paston


My background in mental health includes the use of Psychedelic medicationstreatment-resistant depressionanxietyADHD, and women’s mental health care. I received my PMHNP from SUNY in 2018 but have been in medical practice for over 12 years. I am also a mom of twins who are now in their twenties, which gives me unique insight and empathy into how parenting challenges can contribute to mental wellness. Also, I am passionate about animals. I currently have a senior disabled Chihuahua who has her own wheelchair and a blind Shih Tzu. 

My holistic psychiatry philosophy is that mental health and physical health are tightly connected and we can go at the speed you're comfortable with. I am a humanistic provider who listens to your concerns, collaborates with you to create a treatment plan that will work with you and for you, and a psychopharmacologist who can explain in simple language how different medication classes work. We will go low and slow and make one modification at a time to ensure we tailor an effective plan.


MD, Psychiatrist

Dr. Roderick O’Brien has provided psychiatric services to the Denver area for over a decade. Before that, he served in the United States Air Force (USAF), practicing Neurology. 

Dr. O’Brien completed his residency training in both Neurology and Psychiatry. He also carries board certification in Addiction Medication. 

He has extensive experience in neurostimulation treatment options, including Electroconvulsive Therapy (ECT) and Transcranial Magnetic Stimulation (TMS). 

Dr. O'Brien is trained to provide Ketamine infusions and Sparvato treatments to his patients. He is also certified to provide medication-assisted treatment (MAT) with buprenorphine (Suboxone) for individuals with opioid dependence disorders.


LPC, Therapist

Courtney is a licensed professional counselor who utilizes a variety of treatment modalities, including Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), and trauma therapy, to assist her patients. 

She believes in using a strengths-based, patient-centered, and empowerment-focused approach to treating patients. Courtney is honored to be a part of her patient’s journey toward healing and wellness.


Clinical Practice Manager

Ashleigh got her business degree from Regis University. After completing her degree, Ashleigh worked at Denver Children's Home and Third Way as a treatment counselor for 17 years. Following her stint as a counselor, she managed 29 providers at CeDAR's outpatient clinic. She is truly a valued member of the Axis Integrated Mental Health team and is responsible for implementing the insurance-covered Spravato program at Axis. Her extensive experience in mental health affords her a unique perspective on patient-centered service that demonstrates Axis Integrated Mental Health's commitment to our patients.

Pictured is Ashleigh Enriquez, Clinical Practice Manager of Axis Integrated Mental Health

Mackenzie Gray

Client Success Manager

Mackenzie Gray is responsible for client success, ensuring that every patient who enters the Spravato treatment program is supported every step of their journey. Whether it's to schedule patient follow-up visits, answer any questions about clinic operations, or connect patients to our social prescribing program, Mackenzie is focused on listening to patients and providing them with the support they need to maximize healing. 

A proud military veteran, Mackenzie began her career at Axis Integrated Mental Health as a Spravato technician. With the success of the Spravato program, Mackenzie's role has evolved to focus on the patient experience and to ensure that every patient at Axis has the best chance of recovery. 

AJ Hutchinson

Spravato Technician

AJ is a dedicated Spravato Technician whose journey began in Greeley, Colorado. With a passion for science instilled from a young age, AJ pursued his academic endeavors at Juniata College, where he earned his degree in Biology. Drawing from his upbringing in Greeley and his educational background, AJ brings a unique perspective and a wealth of knowledge to his role as a Spravato Technician. His commitment to helping others combined with his expertise make him an invaluable asset to the team, providing compassionate care and support to those seeking relief



Pictured is AJ Hutchinson a Spravato Technician at Axis Integrated Mental Health
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