Christopher Leesman, DO
Co-founder and Medical Director, Ketamine Assisted Psychotherapy and Spravato (esketamine) treatments
(he/him)
Board certified in Family Medicine and Osteopathic Manipulative Treatment, Dr. Leesman developed a holistic practice that supports individuals on their wellness path. He emphasizes treatments that focus on the root cause, not just treating symptoms. He subsequently became interested in psychedelics as a way to approach mental health in a similar way. After training and certification at the Psychedelic Research and Training Institute in 2020, he began providing ketamine assisted psychotherapy in the following Spring. He continues to be amazed and grateful for the meaningful change he regularly witnesses in clients. He has furthered his clinical skills by gaining further certification on group psychedelic treatments and is excited to bring this powerful modality to both the office and retreat environments.
Outside of the office, he enjoys numerous outdoor activities including travel, rock climbing, mountain biking, and mountaineering.
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Bonner et al. Case report: Persistent shedding of a live vaccine-derived rubella virus in a young man with severe combined immunodeficiency and cutaneous granuloma. Frontiers in Immunology. 2022, Dec. Vol 13.
Friedman M, Leesman CW, Pulver TM. Surgical therapy for Obstructive Sleep Apnea/Hypopnea Syndrome, In Therapy in Sleep Medicine. Barkoukis TJ, Ed., 2011, Elsevier.
Friedman M, Maley A, Kelley K, et al. Impact of nasal obstruction on obstructive sleep apnea. Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery. 2011;144(6):1000–1004.
Friedman M, Pulver TM, Wilson MN, Golbin D, Leesman C, Lee G, et al. Otolaryngology office-based treatment of obstructive sleep apnea-hypopnea syndrome with titratable and non-titratable thermoplastic mandibular advancement devices. Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery. 2010 Jul.;143(1):78-84.
Friedman M, and Leesman CW. The efficacy of tonsillectomy and adenoidectomy for treatment of pediatric obstructive sleep apnea/hypopnea syndrome: an updated systematic review, Sleep Magazine 2010, January, p.58-59.
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Samaritan Health Services - Corvallis, OR
Resident - Family Medicine/Osteopathic Manipulative Medicine
Midwestern University, Chicago College of Osteopathic Medicine - Downers Grove, IL
Doctor of Osteopathic Medicine (DO) - 2009
Illinois State University - Normal, IL
Bachelor of Science
Phi Sigma Biological Honors Society
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Board certified in Family Medicine and Osteopathic Manipulative Treatment
American Osteopathic Board of Family Physicians: 2014 to present
Medical license - Oregon Medical Board: 2011 to present
BLS: 2005 to present
Wilderness First Aid: 2018 to present
National Registry of Certified Medical Examiners: 2/15 to present
Ketamine and Psychedelic Medicine certification: 2020
Group Ketamine and Psychedelic Medicine certification: 2023
Spravato® - REMS certified, 2024
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Friedman M, Leesman C. Balloon dilatation-a tool for revision frontal sinus surgery. Otolaryngology -- Head and Neck Surgery, August 2010; vol. 143, 2 suppl: pp. P125.
Friedman M, Wilson M, Leesman C, Pulver TM. Treatment of chronic sinonasal symptoms without steroids. Otolaryngology -- Head and Neck Surgery, August 2010; vol. 143, 2 suppl: pp. P140.
Friedman M, Fisher MK, Pulver TM, Leesman C. Impact of preoperative OSAHS screening on patient management. Otolaryngology -- Head and Neck Surgery, August 2010; vol. 143, 2 suppl: pp. P4499.
Friedman M, Pulver P, Leesman C, Foster M, Patel A. Clinical Impact of pH Monitoring on Treatment of LPR. Otolaryngology -- Head and Neck Surgery, August 2010; vol. 143, 2 suppl: pp. P78.
Sandberg SG, Mithyantha J, Pakdeeronachit S, Leesman CW, Garris PA. Further support for 'Passive Stabilization' of striatal dopamine in an animal model of preclinical Parkinson's disease. Abstract accepted to the Annual Meeting for the Society for Neuroscience (San Diego, CA). 2004.
