About

 Jonathan DeWeese is a board-certified psychiatric mental health nurse practitioner (PMHNP), as well as a board-certified adult-gerontology primary care nurse practitioner. He currently works in private practice in Central Square, Cambridge, MA. He completed an intensive two-year post-graduate fellowship in individual and couples psychodynamic psychotherapy at the Psychotherapy Institute of Back Bay, where he is now on faculty.

Jonathan is particularly interested in:

  • psychodynamic psychotherapy 
  • relationship issues
  • masculinity and men’s issues
  • LGBTQ+ issues, including religious trauma 
  • spiritual/existential issues
  • aging
  • ketamine-assisted psychotherapy
  • psychedelic integration and harm reduction

Prior to moving into private practice full-time, he worked for two years in geriatric psychiatry at the Cambridge Health Alliance, a Harvard Medical School teaching hospital. Jonathan’s clinical and nursing foundation came from the Massachusetts General Hospital, another Harvard Medical School teaching hospital, where he trained and worked for ten years across multiple departments. 

Clinically, Jonathan has experience in inpatient, outpatient, emergency, correctional, and hospice settings. He works with a number of mental health concerns including mood and anxiety disorders, ADHD, and substance use disorders. He is also passionate about ketamine-assisted psychotherapy (KAP) as both a prescriber and a KAP therapist, and he partners with KAP therapists to prescribe ketamine to their clients for this purpose. With advanced training in psychotherapy, pastoral care, psychopharmacology, and psychedelic-assisted psychotherapy, Jonathan finds supporting his patients’ flourishing and accompanying them across the range of their human experience deeply fulfilling work.

EDUCATION:

  • California Institute of Integral Studies: Certificate in Psychedelic-Assisted Therapies and Research (2022)
  • The University of New Hampshire: Post-Masters Psychiatric Mental Health Nurse Practitioner Graduate Certificate (2021)
  • The MGH Institute of Health Professions: Bachelors and Masters of Science in Nursing (2015)
  • The University of Chicago: BA in South Asian Languages and Civilizations, Phi Beta Kappa (2010)
  • Deep Springs College (2009)

FELLOWSHIPS:

  • Psychotherapy Institute of Back Bay Post-Graduate Fellowship in Adult and Couples Psychodynamic Psychotherapy (2022-24)
  • Psychodynamic Couple & Family Institute of New England Post-Graduate Couple Therapy Program (2022-23)
  • Massachusetts Institute for Psychoanalysis Post-Graduate Fellowship Program (2021-22)
  • Swartz Fellowship in Spiritual Care at Massachusetts General Hospital entailing three units of Clinical Pastoral Education, or CPE (2015-16)

TRAININGS:

  • Accelerated Experiential Dynamic Psychotherapy (AEDP) Essential Skills, ES1 (2026-2027)
  • Institute for Advanced Psychotherapy Program at Loyola University Chicago (2026-2027)
  • Hero’s Journey Foundation Group Facilitation Training: working with intensive group processes, depth facilitation, vitalizing encounters, and the hero’s journey myth (2025)
  • Hero’s Journey Foundation Vitalization Training: a dynamic synthesis of facilitation skills emergent psychological processes, and the hero’s journey myth (2024-2025)
  • Intensive training and apprenticeship in guiding individual altered-state experiences and working in ceremony in the Ralph Metzner lineage (2023-2024)
  • Northeastern Society for Group Psychotherapy Observation Group training (2023) 
  • Accelerated Experiential Dynamic Psychotherapy (AEDP) Level 1 (2022)
  • MAPS Therapist Training Program for MDMA-assisted psychotherapy (2021)
  • Ketamine-assisted psychotherapy modules one through six and the medical module from Polaris Insight Center (2020-23)

TEACHING, PRESENTATIONS, AND PUBLICATIONS:

  • Faculty member at the Psychotherapy Institute of Back Bay (2024 to present)
  • Panelist for discussion on Psychedelic Chaplaincy at Harvard Divinity School (November, 2025)
  • DeWeese, JP., and Barton, E. Course in Psychodynamic Considerations in Psychopharmacology at the Psychotherapy Institute of Back Bay (April-June, 2025)
  • DeWeese, JP. Spiritual Care for Substance Use Disorders. Presentation given:
    • Cleveland Clinic Spiritual Care Department (February, 2025 and October, 2025)
    • Stanford University Medical Center Spiritual Care Department (June, 2024)
    • Massachusetts General Hospital Clinical Pastoral Education (MGH CPE) Spiritual Care Residents and Interns (annually 2019 to 2025)
  • DeWeese, JP. Transference, Countertransference, and Resistance in Spiritual Care. Presentation to MGH CPE Spiritual Care Residents (June, 2024 and January, 2025)
  • DeWeese, JP. Psychedelics and Spiritual Care. Presentation to MGH Spiritual Care Department (February, 2022 and July, 2023)
  • DeWeese JP, Krenz JR, Wakeman SE, Peckham AM. Rapid buprenorphine microdosing for opioid use disorder in a hospitalized patient receiving very high doses of full agonist opioids for acute pain management: Titration, implementation barriers, and strategies. Subst Abus. 2021 May 4:1-6. doi: 10.1080/08897077.2021.1915914
  • DeWeese, JP. Microdosing and Extended-Release Buprenorphine. Presenter at the MGH Psychiatry Academy’s Substance Use Disorders: A Comprehensive Review and Update 2021 Conference (February 16, 2021)

SERVICE: 

  • Steward for the Hero’s Journey Foundation Men’s Summer Intensive Program (2022-2027) and Kitchen Manager (2025-2027)
  • Trustees of Deep Springs College, Board Member and Board Secretary (2021 to present)
  • Professional Advisory Committee for the Massachusetts General Hospital’s Clinical Pastoral Education Program (2019 to 2025) 

LICENSING:

  • Massachusetts, Wyoming, and Idaho