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.
Director, Dietary Supplements
Email: gig@usp.org
Tel: +1-301-816-8343

Abigail Ahing
Project Manager I
Email: aaa@usp.org
Tel: +1-301-8166345

Maged Sharaf
Principal Scientific Liaison
Email: mhs@usp.org
Tel: +1-301-816-8318

Nandakumara Sarma
Sr. Scientific Liaison
Email: dns@usp.org
Tel: +1-301-816-8354

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

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

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