| Year | Position | Institution |
| 1982 | National Jewish Hospital And Research Center 4 | |
| 1997 | Northwestern University 4 | |
| 2006 | University Of Washington 4 | |
| 2012 | University Of Washington 4 |
| Year | Role | Course |
| 1982 | Student | Microbial Ecology 1982 |
| 1997 | Lecturer | Microbial Diversity 1997 |
| 2006 | Lecturer | Microbial Diversity 2006 |
| 2012 | Lecturer | Microbial Diversity 2012 |