For several decades Werner served as facilitator and adviser to Project Piaxtla, a villager-run program which contributed to the early conceptualization and evolution of primary health care.
Out of Piaxtla grew PROJIMO, a community based rehabilitation program Organized and run by Disabled Youth of Western Mexico, still located in Coyotitan.
In the last several years he has facilitated community based rehabilitation workshops that focus on assistive equipment made by participants, family members and disabled children.
Werner has illustrated and authored or co-authored several handbooks on topics including basic healthcare, innovative solutions with limited resources, and assistive technology including Where There is No Doctor, Helping Health Workers Learn, Disabled Village Children, Nothing About Us Without Us, Developing Innovative Technologies For, By and With Disabled Persons and Questioning the Solution: The Politics of Primary Health Care and Child Survival.
[6][7][8] Werner denied the allegations of abuse, and stated that "extensive investigations by the Hesperian Foundation and by the Palo Alto Police Department ...... [had] turned up nothing.