Dietary Supplements Scientific Staff

For questions about USP Dietary Supplements Compendium subscriptions or related Reference Standards, please contact USP Customer Service at custsvc@usp.org or call 1-800-227-8772 (United States and Canada), +1-301-881-0666, or 00-800-4875-5555 (select Europe).

Dietary Supplements Scientific Staff

Gabriel Giancaspro, Ph.D.
Vice President, Foods, Dietary Supplements, and Herbal Medicines
Email: gig@usp.org
Tel: +1-301-816-8343

Nandakumara Sarma, Ph.D.
Director, Dietary Supplements
Email: dns@usp.org
Tel: +1-301-816-8354

Abigail Ahing
Project Manager II
Email: aaa@usp.org
Tel: +1-301-816-6345

Anton Bzhelyansky, M.S.
Scientific Liaison
Email: anb@usp.org
Tel: +1-301-230-6303

Natalia Davydova, Ph.D.
Scientific Liaison
Email: nd@usp.org
Tel: +1-301-816-8328

Huy Dinh, M.S.
Scientific Liaison
Email: htd@usp.org
Tel: +1-301-816-8594

Hellen Oketch, Ph.D.
Scientific Liaison
Email: hao@usp.org
Tel: +1-301-230-3249

Christopher Okunji
Scientific Liaison
Email: coo@usp.org
Tel: +1-301-816-3244

Herbal Medicines Scientific Staff

Maged Sharaf, Ph.D.
Director, Herbal Medicines
Email: mhs@usp.org
Tel: +1-301-816-8318

Nam-Cheol Kim, Ph.D.
Scientific Liasion
Email: nck@usp.org
Tel: +1-301-230-7428