Preston Arndt, MD Expert Witness
Curriculum Vitae

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  • Phone: (805) 910-5907
  • Cell: (805) 910-5907
  • Fax: 805-273-0216
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Specialties & Experience of this Expert Witness

General Specialties:

Family Medicine and General Practice

Specialty Focus:

Cannabis, Cannabinoid Medicine, THC, CBD, marijuana, Cystic Fibrosis, Integrative Medicine, Family Medicine


American Board of Family Medicine, Ventura County Medical Center Family Practice Residency; American Board of Integrative Medicine, American Board of Physician Specialties; Holistic Cannabis Practitioner, Holistic Cannabis Academy; Cannabis Cultivation Certificate, Green Flower Academy

Years in Practice:


Additional Information

I have been practicing Family Medicine in Ventura County, California for the past 18 years, during which I have also received a second board certification in Integrative Medicine due to my interests in using other modalities to heal and promote health and wellness. I am a Cannabinoid Medicine specialist. I am proficient in educating patients, colleagues, and anyone else who has need for information on cannabis. I received a Holistic Cannabis Practitioner Certificate from the Holistic Cannabis Academy, and am a member of the Society of Cannabis Clinicians and the American Academy of Cannabinoid Medicine. I have given Grand Rounds lectures at the Ventura County Medical Center in Ventura, CA on the topic and am a resource to my colleagues on Cannabinoid Medicine. I also have a special interest in Cystic Fibrosis (CF), and am co-director at the CF clinic in Ventura, CA where I see people, both pediatric and adult with CF using a team-based approach. I have worked at the Magnolia Family Medical Center clinic full time 2003 to 2021 which is a satellite clinic of the Ventura County Medical Center where I was proficient at treating acute medical problems and chronic disease. I am a member of the American Academy of Family Physicians and the American Medical Association. I am an attending at the Ventura County Family Medicine Residency and a member of the Investigational Review Board at the Ventura County Medical Center as their science expert on the panel. I have transitioned in 2021 to solo practice out of Ojai, California seeing a broad range if patients such as memory care, home visits, hospice, acute medical care and chronic disease. I see a diverse population and treat numerous types of medical conditions on a regular basis.