Therapy for sleep, anxiety, and trauma. Therapy for physicians and other healthcare providers, attorneys and lawyers, first responders, and active duty military and Veterans. Clinical psychologist Dr. Larissa Tate.

Larissa Tate, PhD

Dr. Tate is a licensed clinical psychologist and the founder of Momentum Behavioral Health. She specializes in evidence-based psychotherapies to help individuals address a wide range of concerns, including sleep disorders, trauma, PTSD, anxiety, and stress. Whether you are seeking support for managing sleep difficulties, navigating the emotional effects of trauma, overcoming anxiety, or coping with the pressures of a high-stress career, Dr. Tate offers empathetic, individualized care thoughtfully tailored to meet your specific needs.

With extensive experience working with professionals in high-stress, high-risk fields — including healthcare workers, attorneys, first responders, and military personnel — Dr. Tate understands the unique challenges faced in these demanding environments. Drawing on the latest research and evidence-based approaches, Dr. Tate provides an authentic, warm, and collaborative environment that helps her clients manage stress and uncertainty while also empowering them to reconnect with what truly matters in their lives, enabling them to thrive both personally and professionally.

In addition to her clinical work, Dr. Tate has been committed to advancing mental health care through research. She’s led and contributed to studies on PTSD, sleep, traumatic brain injury, and stigma around seeking mental health care.

If you’re feeling stuck, Dr. Tate is here to help you get “unstuck,” create a path toward growth, and take meaningful steps toward living a more fulfilled life.

    • Doctor of Philosophy (PhD) in Clinical Psychology, Uniformed Services University of the Health Sciences

    • APA-accredited pre-doctoral internship with the University of Alabama-Birmingham VA Medical Center Psychology Internship Consortium

    • Master of Science (MS) in Clinical Psychology, Uniformed Services University of the Health Sciences

    • Master of Professional Studies (MPS) in Clinical Psychological Science, University of Maryland

  • Throughout her career, Dr. Tate has worked in a variety of settings to include civilian, military, and VA hospitals, primary care clinics, sleep clinics, outpatient mental health clinics, inpatient medical floors, and traumatic brain injury/neurology clinics.

    • Licensed Clinical Psychologist in the state of New York (#026272)

    • Licensed Clinical Psychologist in the state of Maryland (#07240)

    • Licensed Clinical Psychologist in the state of Alabama (#2286)

    • National Register of Health Service Psychologist (#61441)

    • Certified in Cognitive Processing Therapy (CPT) through the US Department of Veterans Affairs

    • Specialized training in Acceptance and Commitment Therapy (ACT)

    • National VA Consultant for Acceptance and Commitment Therapy (ACT) for Depression

    • Specialized training in telepsychology and telementalhealth

    • Cognitive Behavioral Therapy for Insomnia (CBT-I)

    • Cognitive Behavioral Therapy for Hypersomnia (CBT-H)

    • Cognitive Behavioral Therapy for Nightmares (CBT-N)

    • Exposure Relaxation and Rescripting Therapy (ERRT) for Trauma-Related Nightmares

    • CPAP Adherence Therapy

    • Acceptance and Commitment Therapy (ACT)

    • Cognitive Behavioral Therapy (CBT) for Anxiety and Depression

    • Cognitive Processing Therapy (CPT) for PTSD

    • Prolonged Exposure (PE) Therapy for PTSD

    • Written Exposure Therapy (WET)

    • Skills Training in Affective and Interpersonal Regulation (STAIR)

  • Tate, L.L. (2025, January 14). Balancing duty and well-being: A mental health overview for legal professionals. [Invited speaker]. US Army Materiel Command 2025 CLE Program, Louisville, KY.

  • Peer-Reviewed Publications:

    • Paxton Willing, M. M., Pickett, T. C., Tate, L. L., Rhodes, C., Riggs, D. S., & DeGraba, T. (2025). The association of mental health symptoms to posttraumatic nightmares among active duty service members seeking treatment. Military Medicine, 190 (1-2). doi: 10.1093/milmed/usae334

    • Paxton Willing, M.M., Tate, L. L., O’Gallagher, K. G., Evatt, D. P., & Riggs, D. S. (2022) In-theater mental health disorders among U.S. soldiers deployed between 2008 and 2013. Medical Surveillance Monthly Report (MSMR). https://www.health.mil/Reference Center/Reports/2022/11/01/Medical-Surveillance-Monthly-Report-Volume-29-Number-11

    • Danahy, M. P., Paxton Willing, M. M., Tate, L. L., Shuping, E., & Riggs, D.S. (2022). Psychological factors influencing post-deployment respiratory distress in OEF/OIF veterans. Military Psychology. https://doi.org/10.1080/08995605.2022.2131189

    • Paxton Willing, M. M., Tate, L. L., Spangler, P. T., Benedek, D., West, J. C. & Riggs, D. S. (2021). Anxiety and depression mediate the relationship of PTSD to quality of life in service members. Military Behavioral Health, 10(4), 319-327. https://dx.doi.org/10.1080/21635781.2021.2013352

    • Tate, L. L., Paxton Willing, M. M., French, L. M., Law, W. A., Sullivan, K., & Riggs, D. S. (2021). Emotional distress, neurobehavioral symptoms, and social functioning among treatment seeking service members with TBI and PTSD symptoms. Military Behavioral Health, 9(4) 425-434. http://dx.doi.org/10.1080/21635781.2021.1935365

    • Tate, L. L., Paxton Willing, M. M., French, L. M., Law, W. A., Sullivan, K., & Riggs, D. S. (2021). Effects of mTBI and PTSD symptoms on cognitive performance among US active duty service members. Military Psychology, 33(1), 23-28. https://doi.org/10.1080/08995605.2020.1842037

    • Paxton Willing, M. M., Pickett, T. C., Tate, L. L., Rhodes, C., Riggs, D. S., & DeGraba, T. (2021). Understanding the role of sleep on suicidal ideation in active duty service members: Implications for clinical practice. Practice Innovations, 6(2), 67-76. https://doi.org/10.1037/pri0000146

    • Mallonee, S. D., Tate, L. L., De Oliveira, F. P., & Ruiz, A. F. (2020). Development and trial implementation of a 30-day outpatient program for subthreshold PTSD. Military Medicine, 185(12), e38-e42. https://doi.org/10.1093/milmed/usz165

    Book Chapters and Published Guidelines:

    • Paxton, M. M., Tate, L. L., & Riggs, D. S. (2021). Application of cognitive behavioral therapy in a military population In A. Wenzel (Ed.), Handbook of Cognitive Behavioral Therapy. American Psychological Association.

    • Riggs, D. S., Tate, L. L., Chrestman, K., & Foa, E. B. (2020). Prolonged exposure (PE) In Forbes, D., Bisson, J. I., Monson, C. M., & Berliner, L. (Eds.), Effective Treatments for PTSD: Practice Guidelines from the International Society for Traumatic Stress Studies, Third Edition. Guilford Publications.

  • Association for Contextual and Behavioral Science, Member

    • NYC ACBS: New York Region Chapter

    • ACT for Health SIG

    • ACT in Primary Care SIG

    • ACTing with Technology SIG

    • ACT for Trauma SIG

    • Veterans Affairs ACT SIG

    • ACT for Military SIG

Therapy for sleep, anxiety, and trauma. Therapy for physicians and other healthcare providers, attorneys and lawyers, first responders, and active duty military and Veterans.

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Therapy for sleep, anxiety, and trauma. Therapy for physicians and other healthcare providers, attorneys and lawyers, first responders, and active duty military and Veterans.