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Dr. Jeff Hergenrather

Doctor Hergenrather began his medical career as a general practitioner in 1976.  His practice included general medicine, OB-GYN, pediatrics, neonatal care, and emergency medicine.  After over 25 years in emergency medicine he began his medical practice in cannabis consultations and general medicine consultations in 1999.  

Doctor Hergenrather provides cannabis recommendations to Californians with serious medical conditions and consultations worldwide by phone and on-line appointments.   



Most appointments are by phone, Zoom, or Skype

House calls by appointment

As a precondition for an appointment Dr. Hergenrather requests a physician referral or a release of medical records focused toward the condition for which the cannabis consultation is desired.  This could be limited to a few pages if clearly defining the medical diagnosis, such as imaging reports, pathology reports, surgical reports, and specialist consultations.  You can e-mail or fax your records to our office. Click here for our contact information.

Expert Witness

As time permits expert witness appearances may be arranged through the office manager. Initially, telephone appointments are arranged between the physician and attorney. Click here to make an appointment.

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Dr. Hergenrather has been a founding member of the Society of Cannabis Clinicians (a 501c3 non-profit organization) since 2000 and president since 2008.


SCC provides clinical cannabis education to physicians and allied health professionals on their website and at conferences and Quarterly Membership Meetings.


The above is a video of Dr. Tashkin discussing his research on the effects of smoking cannabis at an SCC Quarterly meeting.


SCC's Video Library contains many more educational presentations and documentaries on cannabis medicine.

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