Clinical Psychologist | Trauma Specialist | Founder of Quantum Behavioral, LLC

Dr. Larry Shapiro earned his PhD in Clinical Psychology in 1990 and has spent more than
three decades helping adults overcome anxiety, depression, trauma, substance use
concerns, relationship difficulties, and other complex emotional challenges. Throughout his
career, he has pursued advanced training in trauma treatment, military psychology, severe
anxiety disorders, and psychedelic-assisted psychotherapy.
His therapeutic approach evolved from a simple belief: psychotherapy should help people
get better, not merely learn to live with symptoms. Treatment is active, structured, and
focused on identifying and changing the patterns that keep people stuck, with the goal of
creating meaningful and lasting improvement.
In 2022, Dr. Shapiro founded Quantum Behavioral, LLC, a telehealth-only psychology
practice serving adults in Missouri, New Jersey, and more than 40 states through PSYPACT.
He has found that telehealth often allows people to engage more comfortably and
authentically in therapy, creating greater opportunities for insight, progress, and lasting
change.
In addition to his clinical work, Dr. Shapiro serves as an Adjunct Instructor of Psychiatry at
Washington University School of Medicine and as a clinical advisor to the Center for Holistic
Interdisciplinary Research in Psychedelics (CHIRP). He continues to remain actively
involved in education, consultation, and emerging evidence-based approaches to mental
health treatment.
My Approach
Sometimes the mind becomes stuck in patterns that make situations feel more threatening,
hopeless, or overwhelming than they actually are. We may expect the worst, overestimate
danger, or treat temporary setbacks as permanent problems. These patterns can contribute
to anxiety, depression, trauma-related distress, low confidence, relationship difficulties, and
other emotional challenges. Over time, they can interfere with work, relationships,
decision-making, and overall quality of life.
My approach focuses on identifying unhelpful patterns of thinking, understanding the
emotions they create, and changing the behaviors that keep the cycle going. The goal is not
simply to “think positively,” but to think more accurately, respond more effectively, and
develop greater psychological flexibility and freedom in daily life.

Drawing on more than 30 years of clinical experience, I integrate evidence-based
psychotherapy with both traditional and emerging approaches to treatment. My work is
particularly focused on helping adults with anxiety, depression, trauma, and
treatment-resistant conditions, especially when previous therapy, counseling, or medication
has provided only limited relief.
Therapy is active, structured, and collaborative. Rather than remaining stuck in
understanding problems, we work toward resolving them and creating meaningful, lasting
change.
Why I Named It Quantum Behavioral
I chose the name Quantum Behavioral to reflect my belief that small, deliberate changes in
thinking and behavior can lead to significant improvements in how people feel and function.
In clinical practice, I have found that meaningful change does not always require years of
therapy or repeated insight into the past.
Many adults seeking treatment for anxiety, depression, trauma-related distress, or
long-standing behavioral patterns are looking for more than understanding—they are
looking for change. In my work, progress often comes from applying a clear psychological
framework with structure, precision, and accountability to directly interrupt and change
unhelpful patterns.
When thinking patterns and behaviors are identified and addressed in a focused way,
long-standing emotional cycles can begin to shift. The goal of this approach is to help
people achieve measurable improvement in daily life, greater emotional stability, and more
effective ways of responding to stress and challenges.