Our Staff - PCCCS

We're here for you. The team at the Platte County Community Center South in Parkville is ready to connect you with our many programs and services that focus on Youth Development, Healthy Living and Social Responsibility.

Be Part of Our Team

Our Y is always looking for talented associates to help us make our community stronger. Explore and apply for full- and part-time job opportunities available at Platte County Community Center South operated by the YMCA of Greater Kansas City.

Dominic Santomassimo

Executive Director

Dominic must enjoy working for the YMCA; he’s worked at five other Y’s across the country before taking over his current role in March 2017. He grew up in Evansville, Indiana and graduated from Indiana State University.  He has worked at Y’s in Kokomo, Indiana and De Leon Springs, Florida and St. Louis. Dominic has certificates in Organizational Leader, CPO, LGI, and Ropes and Team Course Lead Facilitator. Each day is different for Dominic, and he’s always meeting new people and making new friends, and that’s what he likes most about his job. When he’s not at the Y, he finds fun on camping trips, mountain biking, fly fishing, surfing, and scuba diving, just to name a few of his hobbies.  

Kristian Allen

Associate Executive Director

Kristian holds a Bachelor’s in Business from the University of Missouri – Columbia.  She is certified by the YMCA of the USA as a personal trainer and group exercise instructor for a variety of classes, including step, yoga, strength and conditioning, Pilates, Reebok Cycle and interval training. Also, she is certified as an instructor for Les Mills BODYPUMP™, Tabata Boot Camp, INSANITY™ and SilverSneakers®. Previously, she worked in various management roles at Drury Hotels for 14 years.  Since she came to the YMCA of Greater Kansas City in 2008, Kristian has worked as a wellness specialist, group exercise instructor, personal trainer and Active Older Adults program coordinator. She has been our healthy living director since 2011. Prior to her current role, Kristian was the Healthy Living Director at Platte County Community Center North in Platte City. Sharing a passion for fitness and helping our members onto a path toward healthy living are her favorite aspects of her job. Outside of our center, Kristian enjoys sports, being a spectator for her kids’ athletics, cooking and baking and serving on the PTA.

Kathy Armitage

Active Lifestyle Program Director

Kathy grew up in Kansas City, MO, and earned a Bachelor of Science degree in Recreation Management with an emphasis in Therapeutics from Central Missouri State. Prior to joining the YMCA of Greater Kansas City in 2001, Kathy spent 15 years in mental health as a recreation therapist. In addition to working with people who are 50 and older through healthy living programs that support body, mind and spirit, Kathy is the Platte County Community Garden coordinator. In her free time, she enjoys outdoor cycling, master swimming, traveling and volunteering for her daughter's swim team. She enjoys that her role allows her to work with ages 50 and older, create new programs outside the four walls of the center, and collaborate with others to serve more people in the community.

Paula Flynn

Senior Healthy Living Director

Paula holds a Bachelor of Arts degree in Education from Boise State University. She previously worked in the fitness field in New York, Florida and Germany while her husband traveled during his military career. She been a part of the Y since June of 2007, when she began as a group exercise instructor and head trainer at our Platte County Community Center North location. Paula enjoys her role as the Healthy Living Director because she is able to help others discover their personal paths to a healthy lifestyle. She cites the people, members and staff alike, as her favorite part of her job.

Tonya Hoopes


Senior Aquatics Director

Tonya joined the Y in 2007 and has been in her current role since June 2015. She grew up in Chandler, Arizona and graduated from Northern Arizona University with a degree in Exercise Science. Tonya has swim certificates in YGLI and YSLIT.  She also has an ASHI (American Safety & Health Institute) Instructor certificate. Outside of the Y, she has worked as a Risk Manager and Aquatics Safety Auditor.  Tonya says the best part of her job is the members. Outside of work, she enjoys anything outdoors, like camping or hiking. 


Becky Owens-Miller

Program Assistant: Youth and Family Programs 

Becky, a native of St. Louis, MO, holds a degree in Psychology and Theater from Tarkio College. She has spent her career impacting the lives of youth and families as a preschool teacher, swim instructor and social worker. She has been a part of the YMCA at several points in her career, with her current tenure spanning six years. She enjoys her role on the Youth and Family Programs team because she gets to interact with the community in a fun and positive way through events like Kids Night Out, Tween Night Out and community events. Outside of work, she enjoys spending time with her husband and children, painting, sewing, swimming and outdoor activities.

Eric Wagner

Property Director

Eric, a native of Rushville, MO, joined the Platte County Community Center South team in 2007. His previous experience includes commercial and residential facilities management. He is a certified Pool Operator and Aquatics Facility Operator. What he likes most about his role are the endless and unique opportunities to impact people's lives and share experiences with so many diverse people every day. In his spare time, he enjoys outdoor activities and spending time with his friends and family.

Derrick Wilde

Sports Director

Derrick, a native of Westpahlia, MO, joined the YMCA of Greater Kansas City in 2013. He holds a degree in Recreation and Leisure Studies from Missouri State University. He has spent most of his career in municipal parks and recreation in the Kansas City area. His passion is positively impacting children through quality youth sports experiences. He attributes his career to values such as teamwork, trust, creativity and sportsmanship that he learned while playing sports his entire life. In his free time, he enjoys outdoor activities such as hiking, fishing, camping and sports with his wife and two sons. He is a certified Parks and Recreation Professional and Youth Sports Administrator.

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