About Marissa Marchioni, OTD, OTR/L, LRC, CEAS

Occupational Therapist · Founder, True North OT · Former USC Faculty · ADHD, Mental Wellness, Lifestyle Redesign®
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I'm an occupational therapist with over 20 years across clinical practice, academia, and wellness — and a deep belief that the gap between how healthcare works and how people actually live is where the most important work happens.

I spent eight years on faculty at USC, where I taught and practiced Lifestyle Redesign® — a programme built on the idea that meaningful daily activity is the foundation of mental health, not an afterthought. My clinical focus is ADHD, executive function, anxiety, insomnia, and chronic condition management — always grounded in what people actually do every day, not just what they report in a session.

I founded True North OT to bring that approach to telehealth — helping patients in California, Maine, Florida, and Georgia navigate mental health, ADHD, and insomnia through clinical lifestyle modification rather than purely pharmacological or talk-based approaches.

More recently, I've been collaborating with a UX design technologist to translate clinical assessment frameworks I developed in practice into AI-assisted consumer tools — home safety assessment for aging-in-place, pediatric environmental safety, sensory environment evaluation. The question driving the work: how do you turn a clinician's trained eye into something anyone can use — without losing the judgment that makes it worth trusting?

I'm published in OTJR, OT Practice, and the OT special interest section of the World Federation of Occupational Therapists. I hold a Doctor of Occupational Therapy from USC.

Connect with me on LinkedIn for clinical updates.

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Selected Publications

  • Bussell, E., & Marchioni, M. (2026). Managing health-related worker habits in times of change. OT Practice, 31(3), 33-36.

    Parekh, P.*, & Marchioni, M. (2020, November). Chronic conditions management at the workplace. SIS Quarterly Practice Connections, 5(4), 30–33.

  • Rice Collins, C., Cunningham, R., Shomer, L., Jalaba, T., & Marchioni, M. (2025). Lifestyle Redesign®: An intervention framework for preventing and managing chronic conditions. In M. N. Ikiugu, S. D. Taff, S. Kantartzis, & N. Pollard (Eds.), Routledge companion to occupational therapy: Theories, concepts and models (pp. 214–225). Routledge.

    Collins, C. R., & Marchioni, M. (2023). Anxiety. In S. Dahl-Popolizio, K. Smith, M. Day, S. Muir, & W. Manard (Eds.), Primary care occupational therapy: A quick reference guide (pp. 113-128). Springer Cham. https://doi.org/10.1007/978-3-031-20882-9_1

  • Roll, S., Becerik Gerber, B., Marchioni, M. Well-being and inclusion in the built environment: Integrating an occupational perspective into an emerging transdisciplinary field. Paper presentation at the World Federation of Occupational Therapists (WFOT) International Congress, Paris, France.

    Valasek, S., Marchioni, M. Psychosocial determinants of weight. Short course presentation at the American Occupational Therapy Association Annual Conference, Webinar.

    Jalaba, T., Marchioni, M. Lifestyle Approaches for Addressing Adult Mental Health. Short course presentation at the American Occupational Therapy Association Annual Conference, Webinar.

  • Marchioni, M. Designing for diversity and health. Poster presentation at the World Federation of Occupational Therapists (WFOT) International Congress, Paris, France.

    Marchioni, M., Jalaba, T., Cunningham, R., Valasek, S. Addressing the occupation of sleep: Evaluation methods and interventions for occupational therapy practitioners. Poster presentation at the World Federation of Occupational Therapists (WFOT) International Congress, Paris, France.

Lifestyle Redesign® is an evidence-based occupational therapy framework centered on the process of analyzing, customizing, and habituating sustainable lifestyle patterns to optimize health, executive function, and overall well-being.

Trademark Notice: Lifestyle Redesign® is a registered trademark of the University of Southern California (USC). True North Occupational Therapy utilizes the principles and clinical methodologies of Lifestyle Redesign® in accordance with professional occupational therapy standards. Reference to this trademark does not imply endorsement, sponsorship, or affiliation with USC.