Administrative service to the field
- Co-Chair, Columbia University Early China Seminar (also co-founder, 2002)
- Director at Large, American Oriental Society (2006-2009)
- Member, Board of Directors, Western Branch, American Oriental Society (2007-2010)
- Founder and Director, Yuen Ren Society (1990-2003)
Memberships:
Fellow, Royal Asiatic Society (elected 2003)
Life Member, American Oriental Society
- Life Member, 聲韻學學會 [Association of Chinese Phonology] (elected 2007)
Life Member, Chinese Language Teachers Association
Life Member, International Association of Chinese Linguistics (member, Executive Board, 2005-2007)
Life Member, T'ang Studies Society
Member, Association for Asian Studies
- Life Member, North American Association for the History of the Language Sciences (NAAHoLS)