Alexandra 'Ally' Mars
NextGen Chair

Alexandra “Ally” Mars has been an active member in the Jewish Community for years, and honored to be a part of the Next Gen OC Board and Co-Chair for Ignite. California raised, music air personalities and marketing/branding have been part of her lifestyle. Ally Mars has been entrenched in the media and Hispanic markets since birth. 

Following her great grandparents, and grandparents, Ally is the fourth generation to participate in and support the value of giving and servicing the Jewish community. With her father formerly serving on the OC Jewish Federation and Family Services board, these values were a focus starting at a very young age.

Ms. Mars joined Mars Media Family as an Account Executive in the spring of 2010, heading up sales efforts for a variety of community festivals and entertainment venue sponsors. 

Ally has a love for traveling: Israel via Birthright in 2006, Italy and backpacked with her sister through Thailand and Bali. With the Mars Family educating and encouraging philanthropy for many generations, Ally is honored and excited to keep the tradition of being a part of Jewish Federation and Family Services.

Adam Miller
NextGen Board Vice Chair 
NextGen Campaign Vice Chair


Adam Miller is a business attorney and the Managing Partner of the Newport Beach based law firm of Miller Miller Menthe LLP.  Adam’s areas of practice include business litigation and transactional work.  Adam's transactional practice focuses on advising business through the every day issues that businesses face.  Adam assists businesses with various issues, including setting up and managing the corporation, drafting contracts, resolving client andvendor disputes, large-scale acquisitions, and exit events including the sale of a business.  Adam's litigation practice ranges from simple disputes with vendors, to bet-the-company litigations, to federal qui tam actions.   

Adam's professional experience prior to Miller Miller Menthe included a clerkship with the Honorable Asher Grunis of the Israeli Supreme Court, and time at the New York bases firm Paul, Weiss, Rifkind, Wharton & Garrison LLP.  While at Paul Weiss Adam gained experience doing large scale public and private M&A work, cutting edge high tech trading litigation, large securities class actions, and simple partnership disputes.  

Adam received his BA, Suma Cum Laude, from University of California, Los Angeles, and got his J.D. from New York University.  Adam now lives in Huntington Beach.  As an active member of the community, Adam hosts his own annual Charity Wine Tasting called Uncork for Hope, which benefits Boys Town California, and is also a participant in the CHOC Follies, an annual musical theater production that benefits the Children's Hospital of Orange County.   Adam is also on the Board of Governors for the Center Club, the Board of Directors for Boys Town California, and is an active participant at the Jewish Federation and Family Services in Orange County, where Adam serves on the NextGen Board, is the Ignite co-chair, and is also currently serving a six year term on the Jewish Federations National Youth Leadership Cabinet.  

Greggory Applefield
Vice Chair, NextGen Campaign


Gregg Applefield is excited to serve his first year on the NextGen Board of Directors. Gregg is a Director of Debt and Equity Finance Group with Mission Capital Advisors, one of the leading boutique real estate finance advisory firms in the country. 

Gregg was born and raised in the San Fernando Valley and, after over five years living in New York City, is proud to be home in Southern California. Gregg received his undergraduate degree from the University of Wisconsin - Madison in Real Estate and Finance. 

Gregg is looking forward to becoming an integral part of the Board of Directors and getting a chance to volunteering his time towards the organization and all those it supports.

Jonathan Gerber
Vice Chair, NextGen Engagement & Retention


Jonathan Gerber is a Partner of the Newport Beach based firm of Miller Miller Menthe LLP. Jonathan’s practice focuses on tort, commercial, real estate, and business litigation.

Jonathan’s professional experience prior to Miller Miller Menthe included time at Lewis Brisbois Bisgaard & Smith, LLP.

Jonathan received his J.D. from the University of San Diego School of Law. During his education, he served as the President of the school’s chapter of the Association of Trial Lawyers of America.  Jonathan received his B.A. from the University of Arizona, where he was a member of Phi Eta Sigma National Honor Society and Pi Sigma Alpha National Political Science Honor Society.

Jonathan was born and raised in La Jolla, California, but now calls Orange County home.  He resides in Ladera Ranch with his wife, Kendra, and two dogs, Brady and Jax. As an active member of the community, Jonathan sits on the Jewish Federation & Family Services of Orange County’s NextGen Executive Committee, and is the Vice Chair of Engagement & Retention.  Jonathan also serves on the Board of Directors for the University of San Diego School of Law Alumni Association, and as a “Big Brother” with Big Brothers Big Sisters of Orange County.

In his free time, Jonathan enjoys traveling and cooking.

Lisa Grier
NextGen Chair Ameritus

Lisa lives in Irvine with her husband Andrew and their family dog. She works as a Business Performance Advisor at Insperity and teaches at 2 synagogues in Orange County (Congregation Bnai Tzedek and University Synagogue). Lisa and Andrew are very excited for their 2 baby girls on the way!


This is Lisa’s 6th year of being on the NextGen board.  She is very passionate about the Jewish Community and her number one goal is building community.  She loves sitting on the Planning and Funding Committee, which she has been involved with for the past 3 years. Lisa has also sat on the JFFS board for the past 2 years. 


Lisa grew up in Southern California, and attended California State Fresno where she earned a degree in Criminology.  While in college, she was on the cross-country and track team, as well as a member of Phi Mu Sorority.  She was Social Chair, Vice President, and President during her collegiate years.


National Young Leadership Cabinet
Class Co-Chair 2014-15, Israel Action Network Coordinator 2013, Mission to Israel Chair 2012
NextGen (Jewish Federation & Family Services) 
Chair, 2013 -present
Member of the Exec, Main JFFS board
Vice Chair  2012, 2013
Campaign Chair 2011-2013
JewGlue Chair/ Campaign Chair 2010 - 2011
JewGlue Committee / Campaign Chair 2009-2010
Bus Captain of Mission to Israel Trip 2009
Planning and Funding Council (JFFS) 2012-present
Board Member 2011-present



Barry Grossman 
Vice Chair, Macher's Mark

Barry Grossman is a Senior Investment Strategist for the California region of Wells Fargo Private Bank. As part of Investment Management, Mr. Grossman works with clients to create asset allocation strategies and build portfolios to help meet clients’ investment objectives while managing risk.

Prior to joining Wells Fargo, Mr. Grossman was a Business Development Officer at Vanguard in Scottsdale, AZ for 2.5 years, where he specialized in assisting clients in transitioning their relationship and managing ongoing relationships. He has been in the investment industry for nearly 13 years.

Mr. Grossman earned a Bachelor of Science in Finance from The University of Arizona. He is also a Chartered Financial Analyst and is on the board of CFA Society Orange County. This is his first year on the NextGen Orange County board and a member of the Macher’s Mark committee. He resides in Costa Mesa with his retriever.

Katerina Hencova
Vice Chair, NextGen Cares & Tikkun 4 Troops


This is Katerina’s second year serving on the NextGen Board. Katerina is the Vice-Chair of NextGen Cares and is passionate about working with Holocaust survivors and supporting our military service members through the NextGen Tikkun for Troops program.          


In 2012, she spent time campaigning for Prop #35, advocating to stop human trafficking, a proposition which was passed in the 2012 CA elections.


Currently, Katerina is a Financial Advisor with Signator Investors, Inc., providing families and business owners with financial strategies and independent advisory services on retirement, estate planning, and asset preservation.


Originally from the Czech Republic, Katerina moved to California in pursuit of opportunities that weren’t readily available in her home country. She is proud to call Orange County her home for the past 4 years. Katerina is very active at her tennis club and enjoys playing in tournaments and USTA leagues. When not playing tennis, she enjoys museums and art galleries, cooking healthy meals, swimming, biking, reading, and taking walks on the beach.


Andrew Krongold
Committee Member , Engagement & Retention

Andrew Krongold is a Financial Advisor for Signature Resources. In this role, he assists businesses and individuals with customized investment management, life insurance, group benefits and executive compensation solutions. He holds a Bachelor of Arts in Economics from the University of California, San Diego.

Andrew is also very involved in the community of Orange County where he is a member of the Business Advisory Board for the Child Abuse Prevention Center, The Elite OC, Big Brothers Big Sisters of Orange County and NextGen for the Jewish Federation & Family Services of Orange County.

Jamie Klein Martherus
Vice Chair, Shalom Family

Jamie Klein is serving her 4th year on the NextGenOC board. Originally born in New Jersey she moved to California at a young age and has grown up in Orange County.

Jamie first became involved with NexGenOC by attending a 365 brunch and slowly started attending more cluster events.  She found she loved connecting with other Orange County Jews and furthering her Jewish Identity. She then joined the NextGen board in 2011.  Jamie has participated in two National Young Leadership trips to Israel Co-Chairing the Orange County delegation in 2011. She was also the co-chair for Tribefest in 2011. Since serving on the board she has helped organize events just as Ignite and the NextGen Wandering Happy Hours. She has also developed strong friendships and connections.

Jamie graduated from Chapman University and currently works for her family business as the operations manager for a wealth management firm in Newport Beach. Jamie also has spent time volunteering as a CASA where she served as a mentor fore severely abused, abandoned and neglected children.

Leaat Modiano
NextGen Board

Leaat Modiano is an Associate Director of the MBA Career Center and an MBA Career Advisor at The Paul Merage School of Business.  

Before pursuing her passion for training and coaching, Leaat worked at Amgen where she participated in their prestigious Commercial Leadership MBA Rotational Program, doing rotations in Marketing and Sales.  Prior to her work at Amgen, she worked at JP Morgan Chase & Co. in New York City in several roles including an HR Compensation Analyst, a Global Investments Analyst for their Private Bank, and a Training and Development Associate for their Investment Bank.  

Leaat earned a BBA in Management & Organization, Strategy and International Business from the Ross School of Business at the University of Michigan, an MBA from the Anderson School of Business at UCLA, and an MPH from the UCLA School of Public Health. 

Leaat joined the Next Gen Board in January of 2013 and is excited to be on the board and very passionate about giving back to JFFS. Leaat serves on the Shalom Family Committee and is focused on helping to build out the programming for young families. Leaat lives in Irvine with her husband, Nir, and 2 year old son, Noam.

Dan Rothenberg
Tikkun 4 Troops Co-Chair


Dan Rothenberg is the Director of Contracts for Volt Information Sciences an international staffing company based in Orange County. He has a Bachelors of Science degree from University of California, San Diego and a Law Degree from DePaul University College of Law.


Born and raised in Long Beach, California, after experiencing winters in the Midwest Dan moved back to Southern California and now lives in Irvine with his wife Elizabeth and their cat Izzy. This is his first year on the Board and he's looking forward to give back to the Jewish Community.

Danielle Serbin
​Vice Chair, Young Women's Engagement


Danielle Serbin is a civil litigation attorney at the Irvine office of an international law firm.  Her practice focuses on complex business litigation and data privacy law.  In addition, she dedicates many hours of her practice to assisting pro bono clients.


Danielle was born and raised in Orange County.  She received her BA from the University of California, Berkeley, with highest honors and departmental honors.  Danielle attended law school at the UC Berkeley School of Law, Boalt Hall, where she was Editor-in-Chief of the Berkeley Journal of Criminal Law.  Following law school, Danielle was a judicial law clerk to the Honorable Miranda M. Du of the District of Nevada. 


Outside of work, Danielle is actively involved in the community.  In addition to her work with NextGen, she is a graduate of the Anti-Defamation League’s Glass Leadership Institute, and is Vice Chair of the Orange County Young Democrats.

Aaron Schilleci
Board Member At-Large

Aaron Schilleci currently serves as the Co-Vice Chairman for NextGen OC. He additionally serves as an active leader in our community with his work as a 2014 ADL Glass Leadership Institute Fellow.  Born and raised in SoCal, Aaron spent his college years between CSUN and UCLA and became an Army Officer in 2001. After serving multiple combat tours in Iraq and Afghanistan, Aaron and his family moved back home to HB where he actively remains in service to our country as an Assault Helicopter Battalion Executive Officer and Director of Public Works at the Joint Forces Training Base in Los Alamitos.

Utilizing his Northwestern University Master's in Public Policy experience, Aaron is additionally involved and affiliated with multiple Warrior Advocacy and service organizations in Southern California, most notably: UCLA Operation Mend and Operation Gratitude. His overarching vision is to continue building the foundation of generational Jewish leadership and provide a deeper understanding and connection between the Southern California Jewish and military communities through engaged leadership and community action.

Away from work, Aaron is a peaceful family man. He enjoys summer trips with his beautiful wife Rebecca, two daughters Ana (7), Gabby (4) and son Jonah (1) to the Lake Arrowhead UCLA BruinWoods Family Resort and Maui. Aaron also makes time to practice Transcendental Meditation every day.

***Currently Aaron is deployed in service to our nation***

Dr. Jeffrey Glass
NextGen Advisory Member At-Large


Stay tuned for Jeffrey's bio!


Stephanie Epstein
Manager, NextGen & Shalom Family

Stephanie is the Manager of NextGen & Shalom Family at Jewish Federation & Family Services, Orange County.  She works to connect, engage and serve members of the OC Jewish community ages 21-45 include families with young children.  Stephanie also manages PJ Library and Shalom Baby.

Stephanie received a B.S. in Psychology and Business from the University of Pittsburgh and gained much experience in her previous role as Shalom Pittsburgh Associate at the Jewish Federation of Greater Pittsburgh. Upon moving to California from Pennsylvania in 2011, she served as the Membership and Program Coordinator at Temple Bat Yahm in Newport Beach. Through her experiences, Stephanie has developed a passion for Jewish Communal work.

Stephanie moved from Pittsburgh, PA to Laguna Beach in 2011 with her husband, Scott, and cannot get enough time in the beautiful sunshine.

Adam Chester
NextGen Outreach & Engagement Coordinator

Adam works to foster meaningful relationships and provide Jewish young adults with opportunities to create rapport with other like-minded individuals. Adam coordinates the OC WAY Birthright trip, actively collaborates with JewGlue, Macher's Mark and the Israel committee, and engages community members on a philanthropic and leadership trajectory.

Adam holds his Bachelor of Science in Psychology from the University of California, San Diego, where he gained experience researching at the Rady Children’s Hospital. He is currently a contributing writer to Jlife magazine, a Research Specialist at The Center for Autism & Neurodevelopmental Disorders at UC Irvine, and a Regional Grant Review Committee Member for Autism Speaks. Adam enjoys traveling and exploring new cultures, celebrating Shabbat with his fiancé Kelly, and has a passion for basketball.


As an Orange County native, Adam is elated to contribute his resources to the community that shaped him.

Nitzan Harel
NextGen MarCom & Events Coordinator

Nitzan was born and raised in Israel where she served in the Israeli Air Force from July 2004 - July 2006. She moved to the US in 2007 to take care of her grandfather in San Diego. After his passing she moved to Long Beach for collage. Nitzan graduated from California State University Long Beach in the fall of 2013 with a BFA in Graphic Design. At CSULB she was very involved with Hillel which became her surrogate family in the CA. Being part of the Jewish community is very important to her and provides her not only with a place to be as Jewish as she wish to be, but also a place where she can connect with people with whom she share values and feel free to share ideas.