Board Members
2024 Board Members
The OCTA Board of Directors is comprised of 18 individuals that represent Orange County. Specifically, 17 Board members govern OCTA with the Caltrans District Director serving as the 18th member in an ex-officio capacity.
![Tam Nguyen image](/img/BoardMember-Tam-Nguyen.jpg?n=2023)
Tam T. Nguyen
ChairRepresenting
Public Member
Date Term Begins
April 2021
Date Term Expires
April 2025
Chair Tam T. Nguyen serves as a Public Member on the Orange County Transportation Authority (OCTA) Board of Directors. He joined the Board in April 2021 and currently serves as a member of OCTA's Executive, Finance and Administration, Legislative and Communications Committees, as well as OCTA's Diverse Leaders Group. Chair Nguyen also serves as one of Orange County's representatives to the Southern California Regional Rail Authority (Metrolink) Board of Directors.
![Doug Chaffee image](/img/BoardMember-Doug-Chaffee.jpg?n=2023)
Doug Chaffee
Vice ChairRepresenting
Supervisor
4th District
Date Term Begins
January 2023
Date Term Expires
January 2027
![Ashleigh Aitken image](/img/BoardMember-Ashleigh-Aitken.jpg)
Ashleigh Aitken
Representing
City Member
4th District
Date Term Begins
January 2024
Date Term Expires
December 2025
Director Ashleigh Aitken was elected as the 48th mayor of Anaheim in November 2022. She is the first woman mayor in Anaheim’s 167-year history, representing all Anaheim residents, neighborhoods, and businesses on the City Council. Orange County's City Selection Committee selected Aitken as a city council representative to the OCTA Board of Directors in November 2023.
![Valerie Amezcua image](/img/BoardMember-Valerie-Amezcua.jpg)
Valerie Amezcua
Representing
City Member
2nd District
Date Term Begins
January 2024
Date Term Expires
December 2025
![Andrew Do image](/img/BoardMember-andrew-do.jpg?n=2023)
Andrew Do
Representing
Supervisor
1st District
Date Term Begins
January 2021
Date Term Expires
January 2025
![Jon Dumitru image](/img/BoardMember-jon-dumitru.jpg?n=2023)
Jon Dumitru
Representing
City Member
2nd District
Date Term Begins
January 2023
Date Term Expires
December 2024
Director Jon Dumitru is a lifelong resident of the City of Orange and now resides in and serves as the City’s District 2 representative to the City Council. Most of the Dumitru family also live in Orange, and those not residing in the United States live in the southern European countries of Romania, Hungary, and Croatia. Dumitru attended all Orange Unified Schools as a youth and is a proud graduate of Orange High School.
![Jamey Federico image](/img/BoardMember-jamey-federico.jpg?n=2023)
Jamey Federico
Representing
City Member
5th District
Date Term Begins
January 2023
Date Term Expires
December 2024
![Katrina Foley image](/img/BoardMember-katrina-foley.jpg?n=2023)
Katrina Foley
Representing
Supervisor
5th District
Date Term Begins
April 2023
Date Term Expires
January 2027
![Patrick Harper image](/img/BoardMember-patrick-harper.jpg?n=2023)
Patrick Harper
Representing
City Member
1st District
Date Term Begins
January 2023
Date Term Expires
December 2024
![Michael Hennessey image](/img/BoardMember-michael-hennessey.jpg?n=202309)
Michael Hennessey
Representing
Public Member
Date Term Begins
October 2023
Date Term Expires
October 2027
![Fred Jung image](/img/BoardMember-fred-jung.jpg?n=2023)
Fred Jung
Representing
City Member
4th District
Date Term Begins
January 2023
Date Term Expires
December 2024
Director Fred Jung was elected to serve a four-year term representing Council District 1 on the Fullerton City Council in November 2020 and was appointed Mayor in 2021. Jung is the first Asian-American Fullerton City Council Member in over 20 years. Orange County's City Selection Committee reappointed Jung as a city council representative to the OCTA Board of Directors in January 2023.
![Farrah N. Khan image](/img/BoardMember-farrah-n-khan.jpg?n=2023)
Farrah N. Khan
Representing
City Member
3rd District
Date Term Begins
January 2023
Date Term Expires
December 2024
Director Farrah N. Khan made history in November of 2020 becoming the 23rd Mayor of Irvine. She not only received the highest number of votes for the position of Mayor in the city’s history, but also shattered glass ceilings as the first woman of color to hold the position, and the first Muslim woman to lead a large city in the United States. Orange County's City Selection Committee appointed Khan as a city council representative to the OCTA Board of Directors in January 2023.
![Stephanie Klopfenstein image](/img/BoardMember-Stephanie-Klopfenstein.jpg)
Stephanie Klopfenstein
Representing
City Member
1st District
Date Term Begins
January 2024
Date Term Expires
December 2025
Director Stephanie Klopfenstein, born and raised in Garden Grove with family roots dating back to the town's early 1800s, was elected to the Garden Grove City Council in November 2016 and subsequently reelected in November 2020. Orange County's City Selection Committee selected Klopfenstein as a city council representative to the OCTA Board of Directors in November 2023.
![Vicente Sarmiento image](/img/BoardMember-vicente-sarmiento.jpg?n=2023)
Vicente Sarmiento
Representing
Supervisor
2nd District
Date Term Begins
January 2023
Date Term Expires
January 2027
![John Stephens image](/img/BoardMember-John-Stephens.jpg)
John Stephens
Representing
City Member
5th District
Date Term Begins
January 2024
Date Term Expires
December 2025
![Mark Tettemer image](/img/BoardMember-Mark-Tettemer.jpg?n=2024)
Mark Tettemer
Representing
City Member
3rd District
Date Term Begins
May 2024
Date Term Expires
December 2025
![Donald P. Wagner image](/img/BoardMember-donald-p-wagner.jpg?n=2023)
Donald P. Wagner
Representing
Supervisor
3rd District
Date Term Begins
January 2021
Date Term Expires
January 2025
Director Donald P. Wagner serves as the Third District Supervisor of the Orange County Board of Supervisors. He joined the Orange County Transportation Authority Board of Directors in April 2019. Wagner is honored to represent over 630,000 diverse residents in the communities of Anaheim Hills, Irvine, Lake Forest, North Tustin & Tustin, Orange, Mission Viejo, Rancho Santa Margarita, the unincorporated canyons, Villa Park, and Yorba Linda.
![OCTA Logo](/media/tgqns3xf/octa15_logo.png)
Vacant
Representing
City Member
4th District
Date Term Begins
Date Term Expires
December 2025
![Ryan Chamberlain image](/img/Caltranslogo.png?n=2023)
Vacant
Representing
Caltrans
District 12
Date Term Begins
Date Term Expires
Governor Appointment