- American Holistic Nurses Association (AHNA)
Hohashi is an Editorial Board Member of the Journal of Holistic Nursing (JHN).
- Watson Caring Science Institute
Hohashi studied under Dr. Jean Watson, and has been certified as a Caritas Coach (2019, Cohort 21).
- Joseph Giovannoni Inc.
- Japanese Music Therapy Association
- Forest Therapy Society
- G for Health
Hohashi is a consultant for G for Health.