I presently serve as President of the Board of Trustees of the American Botanical Council (ABC) and as contributing editor of HerbalGram, The Journal of the American Botanical Council. I also serve as Vice Chair of the United States Pharmacopoeia (USP) Botanical Dietary Supplements and Herbal Medicines Expert Committee and as Co-Chair of the USP Botanical Dietary Supplements and Herbal Medicines Nomenclature Joint Sub-Committee. At the American Herbal Pharmacopoeia (AHP), I am an advisor on commercial sources and handling and international regulatory status.

From 2004 to 2008 I was a founding member of the Steering Group of the International Standard for the Sustainable Wild Collection of Medicinal and Aromatic Plants (ISSC-MAP), and from 2008 to 2021, a founding member of the Board of Trustees of the FairWild Foundation, a standards-setting organization for sustainable wild collection of medicinal plants.

My research has been published in peer reviewed journals including Economic Botany, Journal of Alternative and Complementary Medicine, Journal of Ethnopharmacology, Journal of the American Medical Directors Association, Phytotherapy Research, Planta Medica, and World Journal of Traditional Chinese Medicine, among others.