Our Team

Meet Our Team


Mark McElrath

Executive Director

Mark joined Sunrise Association in September 2015 when Horizon Day Camp-Baltimore launched. He assumed the role of Vice President of Development before transitioning into the Executive Director role in 2017. Mark has worked in Baltimore since 2004 with both local and national based organizations, including Regional Director and Major Gifts Officer positions with the Make-A-Wish Foundation. Regardless of project and scope, Mark’s focus and philosophy concentrate on building meaningful, sustainable partnerships and mutually beneficial relationships. Mark earned an undergraduate degree in Business Administration from Westminster College and a graduate degree in Sport Management from Slippery Rock University.


Dr. Yoram Unguru, MD, MS, MA

Medical Director

Dr. Unguru is a pediatric hematologist/oncologist at The Herman and Walter Samuelson Children’s Hospital at Sinai and a Core Faculty member of The John Hopkins Berman Institute of Bioethics, Baltimore, MD. He is also Assistant Professor in the School of Medicine, Johns Hopkins University. Dr. Unguru earned his M.D. (valedictorian) at the Technion – Israel Institute of Technology / Bruce Rappaport Faculty of Medicine. His M.A. with a concentration in the history of medicine and medical ethics, and B.A. in historical studies, were granted at the University of Maryland, Baltimore County. Dr. Unguru also received a Master of Science (valedictorian) in interdisciplinary studies in biological and physical science at Touro College / Barry Z. Levine School of Health Sciences. He completed his pediatric residency at the Children’s Hospital at Sinai and his pediatric hematology/oncology fellowship at Children’s National Medical Center in Washington DC. Dr. Unguru was a postdoctoral Greenwall Fellow in Bioethics and Public Policy at Johns Hopkins University. Dr. Unguru is board certified both in pediatrics and in pediatric hematology/oncology.


Jill Rosato Huey

Director of Development

Jill joined Horizon Day Camp-Baltimore in July 2019 as the Director of Development. Jill has 24 years of fund development experience in healthcare and human service organizations. She spent 18 years in major gift and leadership positions at affiliated University of Maryland Medical System hospitals including, Mt. Washington Pediatric Hospital, University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, and most recently as Senior Director with University of Maryland St. Joseph Medical Center Foundation. In addition to securing major philanthropic funds while with University of Maryland Medical System, Jill spent four years with The League for People with Disabilities and Camp Greentop, a wheelchair accessible camp for children and adults.


Shelley Sharkey

Director of HorizonWALKS

Shelley joined the Horizon Day Camp staff as HorizonWALKS Director in January 2023. Her first experience with Horizon Day Camp came through volunteerism and participation in HorizonWALKS - one of Horizon Day Camp's signature annual events. She is responsible for leading all facets of development, management, and execution of the HorizonWALKS campaign. Shelley has a background in business sales and operations. She was a long-time business owner who operated MISS FIT, a popular gym well known for empowering women. Shelley earned a Bachelor of Arts degree from McDaniel College, majoring in Political Science. She continues to be active in the community, including as a member of the Baltimore Ravens Playmakers and as a volunteer for various charitable causes.


Shayna Gruner

Camp Director

When hearing about Horizon Day Camp-Baltimore, Shayna couldn't wait to join! She began in 2018 as the Art Specialist. In 2019, Shayna became the Unit Head for the Acorns, Troopers, and Rangers. During Virtual Camp in 2020, Shayna was the Unit Head for Acorns and Troopers and then joined as Assistant Camp Director. During the school year, Shayna is a certified preschool teacher and has lots of experience working with all ages in both camps and schools. She has been working with children, as a mother' helper, since the age of 9. Shayna spent most of her childhood in her mother's classrooms, camps, and productions. She loves being goofy, dancing, and spending time outdoors! She was so excited to be a part of this incredible camp family and to be our Camp Director!


Lisa Kadish

Camp Registrar

Lisa serves as Horizon Day Camp-Baltimore's Registrar. She manages all aspects of camper registration, working closely with Horizon families and hospital personnel. Lisa also helps facilitate a variety of roles with summer staffing, and she provides office support throughout the year. Lisa’s career has spanned both the private and nonprofit sectors. Most recently, she served for 12 years as the Community Relations, Volunteer and Office Coordinator for the Make-A-Wish Foundation of the Mid-Atlantic.


Saralee Czajkowski​

Coordinator, Horizon on Wheels

Fran Sonnenschein​

Coordinator, Horizon on Wheels