He has been a visiting professor in the program of Native American Studies at Colgate University, the Department of Anthropology at Rollins College, and the Department of Sociology and Anthropology at DePauw University. He is a specialist in the archaeology and ethnohistory death and mortalities, history and historicities, and time and temporalities in the Pre-Columbian and Early Colonial Central Andes. He is the author of several articles and the co-editor of a volume on Andean ethnology, ethnohistory, and archaeology in honor of Professor R. Tom Zuidema. His current research examines the mythical and ritual landscapes of Huarochirí during the critical transition from Late Pre-Hispanic to Early Colonial times.