Some Oregon medical marijuana doctors sign off on thousands of cards per year Written by thcscout on January 24, 2021. Posted in Medical. No Comments on Some Oregon medical marijuana doctors sign off on thousands of cards per year For thousands of Oregonians, the path to a medical marijuana card starts at a clinic in Southeast Portland staffed by Dr. Thomas Orvald, an 80-year-old retired heart surgeon from Yakima. In the past year, Orvald has signed off on 4,180 cards. Read more at: http://www.oregonlive.com/health/index.ssf/2012/12/medical_marijuana_a_few_high-v.html