Northgate High School Alumni
Walnut Creek, California (CA)
Katherine Sullivan (Katherine Tassinari)
Northgate High School
Class of 1999
→ Join 3244 Alumni from Northgate High School that have already claimed their alumni profiles.
→ There are 59 classes, starting with the class of 1961 all the way up to class of 2025.
KATHERINE'S PROFILE
| First Name | Katherine |
| Last Name | Sullivan |
| Maiden Name | Tassinari |
| Graduation Year | Class of 1999 |
| Gender | Female |
| City | N/A |
| State/Province | CA |
| Country | United States |
| Occupation | Financial Services Manager |
| Married | Yes |
Class of 1999 Alumni
→ Reunite with 59 class of 1999 alumni that have joined.
Brandy Mertens
Class of 1984
Ann Patton
Class of 1976
John Jacobs
Class of 1990
Wayne Chen
Class of 2006
Steven Detrick
Class of 1996
Evan Halley-mccarty
Class of 2021
Mike Mike La Franco
Class of 1983
Juliette Juliette Mortimore
Class of 1978
Barb Meltzer
Class of 1979
Scott Avila
Class of 1978
Khalid Radwan
Class of 1992
Brian Tennant
Class of 1993
Vincent Durant
Class of 2005
Karen Kistler
Class of 1982
Monica Gomez
Class of 1991
Jeff Humphrey
Class of 1977
Marla Abramovitz
Class of 1976
Hennessy Miller
Class of 2008
Upcoming Class of 1999 Reunions
Plan a Class of 1999 Reunion for Free
Class of 1996 30 Years
Invited Classes: All Classes
Date: Oct 21, 2026
Description: Look for me at the picnic area near the sand volleyball courts
Recent Class of 1999 Reunions
Class of 1981 - 40-Year Reunion
Invited Classes: All Classes
Date: Oct 09, 2021
Description: Register: https://www.classcreator.com/Walnut-Creek-CA-Northgate-1981/class_index.cfm
Grand Reunion
Invited Classes: All Classes
Date: Oct 06, 2017
Description: Please go to this site for all details of the Grand Reunion: https://www.eventbrite.com/e/northgate-high-school-grand-r...(read more)
Northgate Alumni Picnic
Invited Classes: All Classes
Date: Jul 18, 2009
Description: It is pot luck, so bring a main dish, side dish, snack, drinks, picnic table, it's very informal.
Reunion for All Years
Invited Classes: All Classes
Date: Jul 18, 2009
Description: please check this website for more information: http://www.centerd.com/events/?id=p/1/13EE9283BBE0EE1B6B4FE4641019775C/I...(read more)
