Meet Our Team

The National Association of Pediatric Nurse Practitioners’ more than 8,000 members and stakeholders are supported by our dedicated team of association management professionals. We value our collaborative relationship with volunteer leaders and members to fulfill our mission to empower pediatric-focused advanced practice registered nurses and key partners to optimize child and family health.

Executive Office

James H. Wendorf  
Executive Director

James H Wendorf serves as executive director of NAPNAP, leading efforts to build on the association’s strengths and develop opportunities to meet the professional needs of its members in the evolving pediatric health care landscape. He also serves as vice president of NAPNAP Partners for Vulnerable Youth and chief administrative officer of the NAPNAP Foundation.

Prior to joining NAPNAP in 2020, Jim served for 17 years as executive director of the National Center for Learning Disabilities and then as senior advisor to the Poses Family Foundation, a private philanthropy. In his volunteer work, he is vice president of the board of the Yale Alumni Nonprofit Alliance. His previous volunteer service includes the Director’s Council of Public Representatives of the National Institutes of Health and the NIH Chimpanzee Research Usage Panel.

During his tenure in non-profit organizations, Jim has worked extensively with boards, funders, teams and consultants to build programs, partnerships and financial resources to meet ambitious goals. He earned degrees from Yale College (B.A.), University of Cambridge (M.A., Honours B.A.) and Cornell University (M.A.).

Eileen Arnold-Ley, CAE   
Manager of Executive Office & Resource Development
Since 2013, Eileen Arnold-Ley has supported NAPNAP’s executive office and board and provided project management and fundraising guidance to the NAPNAP Foundation and NAPNAP Partners for Vulnerable Youth. She is proud to have recently earned ASAE’s CAE (certified association executive) credential. In her free time, she serves as co-chair of the New York Society of Association Executives (NYSAE) Membership Engagement Committee and was NYSAE’s 2018 Volunteer of the Year. Prior to joining NAPNAP, Eileen spent more than 10 years as a professional stage manager, and she still loves attending theater with her husband, Darren.


Laura Nelsen   
Director of Education & Learning
Laura Nelsen joined the National Association of Pediatric Nurse Practitioners in 2007 and serves as the director of education & learning. In the Education Department, Laura oversees the planning of the national conference and symposium events. She manages NAPNAP’s continuing education accreditation program, maintains the association’s online learning website, PedsCESM, and coordinates the development of professional education courses. Laura’s favorite place to be is in the bleachers at sporting events for her three sons.

NAPNAP events and logistics supervisorAnna Chernis 
Events and Logistics Supervisor
Anna Chernis joined the National Association of Pediatric Nurse Practitioners in 2012 and serves as the events and logistics supervisor. Working in our Education Department, Anna is responsible for meeting logistics and hotel coordination for all events, including national conference, symposium and board meetings. Anna also works with faculty and students on certification review courses and is responsible for the speaker coordination and support at our events. Anna is a big tennis fan and enjoys traveling.

NAPNAP Education Programs CoordinatorAdy Germanguz  
Education Programs Coordinator
Ady Germanguz joined the National Association of Pediatric Nurse Practitioners in 2020 as an education programs coordinator. In her role, Ady designs and develops educational programs and online educational content. Ady holds an MA in Education, a Learning Design Certificate and has 15 years’ experience in non-profit organizations. Outside of work, Ady enjoys traveling and spending time in nature with her three daughters and her husband, Igal.

NAPNAP Education SpecialistAlexandra Rojas
Education Specialist
Alexandra Rojas joined NAPNAP in 2014 as an education specialist. For NAPNAP national conferences, Alexandra manages the registration system and responds to member inquiries about the event. She also works with chapters, special interest groups (SIGs) and other stakeholders on continuing education accreditation applications. Her job also includes creating courses for PedsCESM, our e-learning platform. Alexandra enjoys hiking, road trips and traveling abroad.

Finance and Administration

NAPNAP director of finance and administrationLinda Young
Director of Finance & Administration
Linda Young has more than 25 years of experience in accounting and finance. In 2011, Linda joined the National Association of Pediatric Nurse Practitioners and has been instrumental in modernizing the Finance Department. Linda currently serves as the director of finance and administration, overseeing finance, human resources and IT. Linda has a loving husband, two adult children, a dog Frankie and cat Archer. She resides in Wildwood, N.J., and loves the beach, decorating and shopping.

NAPNAP Senior AccountantMary Wagner 
Senior Accountant
Mary Wagner is a senior accountant and has been with NAPNAP since 2005.  Her responsibilities include accounts payable, accounts receivable, financial statements and budget preparation for NAPNAP, NAPNAP Foundation and NAPNAP Partners for Vulnerable Youth. Mary was born and raised in the Washington, D.C. area. In her spare time, she enjoys practicing yoga, sampling local wines, watching professional sports and spending time with family and friends.

Petula Wilson 
Senior Manager of Human Resources
Starting as a consultant, Petula Wilson has since transitioned to serve as NAPNAP’s senior manager of human resources. In addition to being a collaborative member of the Finance and Administration Department, she is a certified human resources professional (PHR) with 20+ years of experience in the field. She currently resides in a suburb near Philadelphia with her teenage daughter and husband.

Health Policy

Dave Mason 
Federal Government Affairs Representative
With long-standing close relationships with members of Congress and their staff, executive branch officials, federal agency leaders, health care organizations and patient advocacy groups, Dave Mason is a key member of NAPNAP’s policy team. For almost a decade, his superior understanding of legislative, regulatory and political procedures coupled with his expertise in a broad range of health policies, federal appropriations and issues, including Medicaid and the Children’s Health Insurance Program, have helped  guide our advocacy efforts.

Marketing and Communications

NAPNAP Director of Marketing and Strategic ProjectsMichele Stickel 
Director of  Marketing & Strategic Projects
Since joining the National Association of Pediatric Nurse Practitioners in 2012, Michele Stickel has served in multiple roles in the organization. Currently, she works with NAPNAP’s team to develop multi-channel campaigns to promote the association’s products and services, as well as increase awareness about the role of nurse practitioners in child health. Michele also works on NAPNAP’s health policy efforts. She enjoys traveling and outdoor activities with her family.

NAPNAP communications and digital marketing supervisor Justin T. Worsley 
Communications & Digital Marketing Supervisor
Justin T. Worsley has served as the communications and digital marketing supervisor for the National Association of Pediatric Nurse Practitioners since 2015. As a member of the Marketing and Communications team, Justin helps create digital and print communications and marketing campaigns seen by members, prospective members and more.


Shari Beck Associate Director of Member EngagementShari Beck 
Associate Director of Member Engagement
Shari joined NAPNAP in September 2021 and serves as the associate director of member engagement. Shari plans and directs the implementation of services for NAPNAP’s members and 53 chapters, which includes data-driven member engagement, retention, recruitment strategies and implementation plans. She evaluates data and insights to understand needs and utilize the information to enhance member experience, new content, benefits, and program offerings. Shari resides in Queens, N.Y. with her husband, Kelly. In her spare time, she enjoys watching the Mets, Jets and horse racing and spending time with friends.

NAPNAP Membership and Chapter Services ManagerDaniela Weitzman
Manager of Member & Chapter Services
Daniela Weitzman joined the National Association of Pediatric Nurse Practitioners in 2012 and currently manages the Membership Department and all 53 chapters. In her role, she oversees member recruitment and retention and customer service to members, volunteer leaders and other stakeholders. Daniela was born in Santiago, Chile, and now resides in NYC’s FIDI area two blocks from the NAPNAP office with her husband and their four-legged child, Louis.

Bernard Chan 
Member Services Specialist
Bernard Chan has been a member services specialist at the National Association of Pediatric Nurse Practitioners for the past seven years, where he processes membership applications, including payment, updates membership information  and receives and answers all membership inquiries from membership status to benefits. Bernard is a native New Yorker, an avid moviegoer and enjoys spending time with friends and family.

Professional Development and Nursing Practice

Heather Keesing, MSN, RN, APRN
Senior Manager of Professional Development & Nursing Practice
Heather Keesing has been the senior manager of professional development & nursing practice at NAPNAP since 2004, where she manages programs aligned with clinical practice resources, public education and professional development for pediatric-focused advanced practice registered nurses (APRNs). Heather also plans, implements, manages and evaluates NAPNAP’s organizational partnerships, publications, position statements and research activities. Heather loves to cook and enjoys spending time at the beach in New Jersey with her husband, Scott, and their dog, Zane.

Simone Daley
Program Specialist
Simone Daley is the program specialist as part of NAPNAP’s education team. She joined NAPNAP in 2012 as an office assistant and brought exceptional experience in office operations, enhancing executive productivity and creating employee relations strategies. Simone brings over 14 years of customer service to NAPNAP and oversees activities with our external partners and alliances, special interest groups (SIGs), NAPNAP volunteers and our conference poster presentations. She currently resides in her hometown of New York with her two sons.

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