Philip E. Wolfson (born 1943) is an American author, psychiatrist and psychotherapist known for his work in psychedelic medicine and integrative psychiatry. He is an advocate for the therapeutic use of psychedelics, particularly ketamine and MDMA, in treating mental health conditions such as depression, anxiety, and post-traumatic stress disorder (PTSD).
Career.
Wolfson began working as a psychiatrist in the DC area in 1971, attending programs at the Washington School of Psychiatry, including three years of group therapy training, and joined Woodburn Mental Health Center in Annandale, Virginia as a psychiatrist in 1977. In 1981, he became the Director of I Ward in the Contra Costa County Hospital Mental Health System. 
In 2011, he published his memoir, "Noe: A Father’s Memoir of Loss," which chronicles the death of his son and reflects on the process of healing and transformation through grief. The book explores how personal experiences shape professional and therapeutic perspectives.
In 2014, he opened a clinic in Marin County, California, dedicated to the application of ketamine-assisted psychotherapy (KAP). This practice has been elaborated in numerous publications including The Ketamine Papers in 2016 with Glenn Hartelius.
In 2016, Wolfson was involved in research and advocacy related to MDMA-assisted therapy. He supported the use of MDMA in therapeutic settings to address trauma and PTSD, emphasizing the need for rigorous scientific studies to validate its efficacy and safety.
In 2017, Wolfson founded and became the CEO of the non-profit Ketamine Research Foundation (KRF).
In 2023, Wolfson published through KRF the first paper on working with adolescents and ketamine. In KRF, he conducted research on the concentration of ketamine in breast milk enabling women to make a decision to use this medicine for treatment of depression and postpartum depression with minimal disruption of the mother-child relationship. In 2024, he published a paper on ketamine and KAP emphasized the dissociative-psychedelic effects of the medicine as primary and inseparable effects and not side effects.