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%
  • Transpersonal Psychology 80%
  • Treatment-Resistant Research 60%
  • Legal Psychedelic Research 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 mediation 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.

Matt Battaglia, PA

Matt graduated from the University of Colorado’s PA school Spring 2010. Before PA school he used his undergraduate degrees in philosophy and psychology to work extensively in inpatient psychiatry, outpatient mental health, and after-school programing for at-risk youth. He also spent time publishing researching in the areas of genetics and aging. After PA school, he worked in the Emergency Department and Community Health Centers caring for chronic and acute life threatening disease.

During the last few years his interest and knowledge in integrative health and psychiatry has grown. As a medical practitioner, and he strives to integrate information from all modalities of care as they help his patients achieve their health goals. He is excited to have recently joined the team at Integrative Psychiatric Healing Center. For fun and relaxation he spends time in the mountains and ocean, rock climbing, skiing, mountain biking, and surfing.

Physician's Assistant

University of Colorado PA School
Emergency Department | Community Health Centers


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

Sara Gael Giron

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

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, consultaitons, 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.
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Discover long-term mental health with Integrative Psychiatry