Our Team

Providing an Integrative Approach for Long-Term Results

Patient Focused

Compassionate Care

Experience and insight

Our Philosophy

We emphasize the role of psychotherapy, as various medical studies have shown its superior effectiveness versus medication treatments in all but the most severe situations. The synergy of medication and psychotherapy can provided an effective combination early in recovery.

  • Integrative Approach 100% 100%
  • Transpersonal Psychology 80% 80%
  • Treatment-Resistant Research 60% 60%
  • Legal Psychedelic Research 50% 50%

Psychiatrist, Founder IPHC

Founder of Integrative Psychiatric Healing Center, Integrative Psychiatrist

Will Van Derveer, MD

After attending Vanderbilt University for medical school, Will came to Colorado for residency training in psychiatry at the University of Colorado. He opened his private practice in 2002, and has been in practice in Boulder since that time. Will is board-certified by the American Board of Integrative and Holistic Medicine. His passion is finding effective relief from psychological suffering using a vast array of the most natural approaches possible. In addition to traditional medical training, he has have received training in meditation instruction, shamanism, and various psychotherapies.

Successful treatments often include addressing imbalances from a variety of different perspectives, from the ground up. Beginning with diet and lifestyle habits, mindfulness training, optimization of gut functioning, treating hormone imbalances and signs of chronic stress, his aim is to address root causes. His recent experience (2012-2015) as a member of a research team conducting a Phase 2 double blind randomized controlled clinical trial of a novel treatment for chronic treatment PTSD (mdmaptsd.org) – further reinforced his conviction that everyone can heal and achieve well-being.

Will’s role at IPHC is medical director, psychotherapist, and psychiatrist, and no longer provides medication-only treatments. His practice is limited to people seeking weekly psychotherapy with integrative mindfulness-based psychiatry.

Molly Kate Brown, FNP-BC

Molly is a board-certified Family Nurse Practitioner who received her master’s degree from Regis University. She brings over twenty years of healthcare experience to IPHC including Cardiology/Telemetry, Urgent Care, Emergency Room, and Student Health.

Molly has over fifteen years of dedicated meditation training, as well as training in shamanism and other psychotherapeutic modalities that informs her work with patients. Her passion is a partnership with patients that serves as a foundation for deep self-inquiry, and the cultivation of tools that serves the journey of healing. This integrative approach to psychological suffering includes diet, lifestyle, addressing trauma and habitual mental patterns, mindfulness, microbiome (gut) functioning, and chronic stress remediation. Her practice is limited to those willing to play an active role in their healing, not merely seeking medication-only treatments.

Molly is an award-winning author/writer who has lived in Colorado since 1997. Her passions include surfing, dancing, hiking, yoga, silence, writing, and the unfurling, ever-expansive journey of Self-remembering.

Family Nurse Practitioner

Cardiology/Telemetry, Urgent Care, Emergency Room, and Student Health/p>


MDMA for Treatment-Resistent PTSD Study
Naropa University, Transpersonal Focus
Zendo Project, Director of Education

Sara Gael Giron, MA

Sara has extensive experience sitting with people having psychedelic experiences, in her current roles as the director of the Zendo Project for Psychedelic Harm Reduction, and as an MDMA psychotherapist working with Will on MAPS-sponsored research. She has several years experience as a psychotherapist, treating a variety of conditions from anxiety to depression and trauma as well as integration of non-ordinary and psychedelic experiences. 

Stepping into the role of ketamine psychotherapist at IPHC was a natural fit for Sara with her resume of experiences and her sensitive approach to clients. Sara received her Master’s degree in Transpersonal Counseling Psychology at Naropa University.

She believes that developing a comprehensive understanding of psychedelic medicines through research, treatment and education is essential for the health and well being of individuals, communities, and the planet.

Guili Zavaschi, MA

Guili is a Licensed Professional Counselor originally from Brazil, and completed his undergrad studies of psychology in South America and earned his master’s degree in Counseling in the United States where he has been living since 2008. He is passionate about supporting and guiding clients in resolving the roots of the issues that hold them back from a more vital and wholesome life.

Guili firmly believes that good a psychotherapeutic process should facilitate shifts in our awareness creating temporary modified states of consciousness. This perspective was consolidated and informed by his two and a half years of work in the Peruvian amazon jungle. In Peru, he worked as a psychotherapist in a rehabilitation center for addictions that combined modern medicine and psychotherapy with ancient shamanic practices. Through this experience he closely accompanied clients in navigating expanded states of consciousness and witnessed and experienced profound and positive changes in clients’ lives.

In order to achieve similar depths and results, he is collaborating with Integrative Psychiatry Healing Center and their team. He brings his experience of more than a decade actively working as a psychotherapist and his training in Gestalt therapy, Mindfulness, Functional Family Therapy and Wilderness therapy to contribute to clients journey of transformation.


Gestalt Therapy, Mindfulness
Wilderness Therapy, Functional Family Therapy

Trainings, Consulting and Supervision

We provide training, master classes, consultations, and supervision at Integrative Pscyhiatric Healing Center. If you're interested in working with us, expanding your skill set, or receiving professional consultation in starting your own Ketamine clinic or improving your psychotherpy or psychiatric private practice, we can schedule a consultation to see how to best apply our expertise and experience.

Let's Talk

Discover long-term mental health with Integrative Psychiatry