Jessica Snyder, PHR, SHRM-CP

Jessica Snyder joined the Clinic for Special Children as its first Human Resources Generalist in 2023.

As the Human Resources Generalist, Jessica will coordinate all human resources (HR) functions of the Clinic. She will assist in recruitment, onboarding and training, performance review, implementing and enforcing internal policies, ensuring compliance with PA state and federal labor laws, personnel file management, and benefit management.

In her free time, Jessica likes to spend time with her husband and kids, work outside in her yard, and ride her bike along the Susquehanna River.

Why are you passionate about the Clinic?

I am passionate about the Clinic because as the parent of a child with a very rare genetic disease the mission of the Clinic – to serve those with genetic and complex medical disorders – is personal and important to me. I feel fortunate to be able to do something I love (Human Resources) for an organization that does such important work.


Jessica’s Credentials


  • 2016  Society for Human Resource Management, Certified Professional
  • 2007  HR Certification Institute, Professional in Human Resources
  • 1993  Donegal High School, Diploma

Professional Experience

  • Human Resources Assistant, Mennonite Home Communities
  • Human Resource Manager, Pennsylvania Immigration Resource Center
  • Office Manager, Pennsylvania Immigration Resource Center
  • Senior Manager of People, Isaac’s Deli, Inc.
  • Senior Manager of Stores, Isaac’s Deli, Inc.

Professional Associations

  • Society for Human Resource Management (National and Lancaster Chapters), member

Bill Van Ess, MS, CFE

Bill joined the Clinic for Special Children in April 2019 as an Accountant and was promoted to Accounting Manager in October 2020. In his role, Bill manages invoicing, bank reconciliations, maintaining the general ledger, and all facets of accounting for the organization. Bill earned his bachelor’s degree in Accounting from Albright College in Reading, PA and his master’s degree in Accounting from Neumann University in Aston, PA. He spent several years as an auditor and is a Certified Fraud Examiner.


Why are you passionate about the Clinic?

With having a young daughter, I appreciate what the Clinic does for helping children, it’s as simple as that.

Kelly Cullen

Kelly joined the Clinic for Special Children in 2018 as the Marketing and Communications Manager. In this role, Kelly manages the Clinic’s communications and marketing through public relations, community outreach, social media, advertising, and supporting the development team’s fundraising efforts.

Prior to joining the Clinic, Kelly was the Global Creative Brand Manager for a baby gear company where she was involved in all facets of brand marketing for the organization.

Kelly is a native of Lancaster County, having graduated from Manheim Township High School. In her free time, Kelly enjoys horseback riding, reading, traveling, spending time with family, and listening to podcasts.


Why are you passionate about the Clinic?

As soon as I learned about the Clinic, I knew I wanted to be a part of this team that’s at the forefront of genomic research and treatment. It is an honor to work in a role where I can help others as well as use my experiences to further the Clinic’s mission.


Kelly’s Credentials

Education and Certifications

  • 2013  Elizabethtown College, Bachelor of Science in Business Administration/Marketing
  • Pennsylvania College of Art & Design, Design Professional: Print Design Certificate
  • Google Ads Search Certification

Professional Experience

  • Global Creative and Customer Brand Manager, Nuna Baby Essentials
  • Global Assistant Brand Manager, Nuna Baby Essentials

Professional Associations
Member of Public Relations Society of America (PRSA)


  • 2013  Douglas & Victoria Meacham Award for Outstanding Marketing Student, Elizabethtown College
  • 2011-2012  James B. Hoover Business School Scholarship Award, Elizabethtown College

Adam D. Heaps, MS, MBA

Adam has been the Executive Director of the Clinic since 2016. He originally joined the Clinic in 2010 as a Laboratory Technician. In 2012, he was promoted to Laboratory Scientist and in 2014 he was appointed as the Administrative Director.

As Executive Director, Adam is responsible for financial management, strategic planning, collaborative relationships, facilities, and human resources. He is a member of the Clinic’s Leadership Team, still occasionally helps in the lab, and continues to serve on the laboratory on-call schedule.

As a Laboratory Scientist, Adam was responsible for running clinical and research assays including amino acid quantitation by HPLC, urine organic acids by GC/MS, and DNA isolation from whole blood. He was also responsible for Sanger sequencing, genotyping variants with probe-based assays, and coordinating research samples. Adam has contributed to research at the Clinic and has co-authored several peer reviewed papers with Clinic colleagues.

Why are you passionate about CSC?

When I was in college I learned about CSC and the work that was done. What struck me was that advanced scientific technologies were being used to directly impact patient care in a primary care setting. As someone who has an interest in genetics, it also struck me that genetic information was being generated and used in a very practical way. When I started working at CSC, it became even more evident to me that the lab and clinical staff worked hand in hand to try and reduce or eliminate the barriers (cost, lab turnaround time, distance, etc.) that prevent patients from receiving high quality, personalized care. It is an honor for me to support and be a part of those efforts.

Adam’s Credentials


  • 2018  St. Joseph’s University, Master of Business Administration
  • 2012  Millersville University, Master of Science in Biology
  • 2008  Franklin & Marshall College, Bachelor of Science in Biology

Professional Associations
Member of American College of Healthcare Executives

2020 Rare Impact Award, National Organization for Rare Disorders

Published Papers
To view Adam’s peer reviewed published papers, please visit our Published Papers page HERE.