Casey graduated from Eatern York High School in 2012. She stared at Leader Heights as a Client Care Specialist in 2014. She has a Boston Terrier mix named Delilah, a brown Tabby cat named Cam, and a Chinchilla named Mr. Bumpers. Casey shares her home with her one year old son, Bentley, and her boyfriend Corey.
Leader Heights Animal Hospital’s experienced support staff strive to provide personalized, compassionate care for our patients and clients alike.
Crystal has been in management since 1998 and joined the Leader Heights family in 2015. Originally from Lancaster, she currently lives in Manheim with her amazing Husband, Neil, and their 3 daughters, Brittani, Amber, and Rylan. They also share their home with 4 dogs (Lucy, Linus, Kirra, & Bosco), 3 cats (Tutter, Zippy, & Olaf), and their tortoise, Lilly. Crystal has been a certified dog trainer since 2004 and also owns her own small youth theater company. In her spare time, she enjoys, above all, spending time with her family and pets. You can also find her directing or making costumes for her theater or scrapbooking. She is very passionate about Leader Heights and the clients and pets in the community, and is so proud to be a member of the Leader Heights family.
Client Care Specialists
Lori has worked at Leader Heights since 1997. Her and her husband, Mike, live in the lower Windsor area. She has two children, Kaitlyn who is 15 and Ben who is 11. They have lots of pets that include their dog, Lou, cat, Whiskers, guinea pig, Rex, bearded dragon, Spike, Chameleon, Rocco, and several hermit crabs and fish. Lori’s family enjoys spending time at the beach throughout the year.
Rose has been with Leader Heights since 1997. She and her husband have lived in Glenn Rock for 35+ years. She loves music, trivia, and working out. She also loves spending time with her family and granddaughter. She has a wild kitten named Ellie.
Mary Kay Heisey, C.V.T.
A native of Lancaster County, Mary Kay received her Associates degree in Animal Health Technology from Harcum College. Her practical training was with the University of Pennsylvania School of Veterinary Medicine.
During her career she has worked as a technician in a mixed animal practice, as well as an instructor and acting coordinator for an Animal Health Technology program at ta school for Allied Health Careers. She was also an Anesthesia/ICU critical care technician for both large and small animals for the Virginia/Maryland Regional College of Veterinary Medicine.
Mary Kay joined Leader Heights Animal Hospital in 1985. Her professional interests include anesthesia, emergency and critical care, cytology, and hematology. As the lead technician, she also enjoys mentoring the next generation of veterinary technician graduates.
Outside of work she enjoys wildlife and nature photography, traveling, and gardening. She shares her home with her 2 cats, Acadia and Bimini, and her 2 dogs, Sedona (Australian Cattle Dog) and Bosque (Miniature Australian Shepherd) with whom she trains in both canine agility and obedience.
Ally Senft, C.V.T.
In 2009, Ally got her first job at 16 years old as a part time kennel attendant at Leader Heights Animal Hospital. After caring for the hospitalized animals & patients in our kennel, she quickly realized that she had a real passion for helping & caring for sick animals. After working as a veterinary assistant for awhile, sheI decided to further her education & became a certified veterinary technician after attending YTI Career Institute. She really enjoys assisting in surgery, caring for hospitalized patients & being an important part of their recovery. Of course, she feels that the puppies & kittens we get to watch grow is 1 of the best aspects of her job! She loves working with all the compassionate doctors & staff at LHAH who share the same love for all animals as she does.
In her free time she enjoys spending time with friends, family, and her daughter Harper, spending time in the outdoors & going to gym.
Jonna Walker-Warren, C.V.T.
Jonna graduated from Dt. Petersburg College in Florida with a degree in Veterinary Technology. She worked for almost 15 years as a CVT within the emergency veterinary field. She also has worked for a Board Certified Oncologist during that time. Jonna moved back to Pennsylvania a few years ago with her husband and started as a technician at Leader Heights in 2013. She also holds a degree from Penn State for Wildlife Technology and is currently working on her next degree from Penn State, which is in the criminal justice field. She has taken on the additional role of Lead Client Service Specialist in 2016.
Currently, Jonna’s four legged children consist of three dogs, two guinea pigs, one turtle and a gold fish. She has always wanted to work with animals since she was a young child and feels she has been lucky to be able to follow her dream.
Kiersten Wetzel, C.V.T.
Kiersten started at Leader Heights Animal Hospital in August of 2015 as a kennel attendant while attending YTI to become a certified veterinary technician. She graduated from YTI in May of 2017 and was excited to start her career as a veterinary technician at LHAH. What she loves about her job is not only getting to care for and interact with patients, but getting to learn new things each day. She enjoys being part of the LHAH team whether it be assisting in surgery, helping with appointments, or helping where needed throughout the hospital. In Kierstens free time she enjoys playing field hockey, shopping, and spending time with family, friends, and her dog Oakley.
Heather Zorbaugh, L.V.T.
Heather has been a part of Leader Heights Animal Hospital since July of 2008. Heather grew up in Windsor, Pa and graduated from Medaille College in Buffalo, N.Y. She enjoys working in a small animal practice, but is particularly fond of kittens and senior pets. Heather has two cats, Buttons and Binx, and a beagle, Bess. When not working, she enjoys spending time with family, friends, and her pets.
Theresa grew up on a small rural farm in York, PA. This is where her love for animals of all kinds started. Caring for and feeding all of the animals was never considered work to her. She preferred cleaning the barn over housework any day.
With this love of all animals, it was fitting that she followed her heart and worked taking care of them. Starting as a kennel attendant in 1991, she learned the ropes and advanced to an Assistant followed by a Technician.
Theresa lives in the same neighborhood she grew up in, sharing her home with her 3 dogs (Timber, Grover, & Sammy), 3 cats (Ilean, Shasta, & Daisy), horse (Hoss), donkey (Suzie), some chickens, and whatever else comes along in need of a home.
Theresa’s hobbies include gardening, trail riding, hiking, and camping with her horse and dogs.
A York County native, Teresa grew up in Stewartstown and graduated from Kennard-Dale High School. She began working at Leader Heights in 1991 as a receptionist and was later trained as a technician. An avid history buff, she enjoys working on her family tree. She also enjoys hiking, photography, and kayaking. She currently resides in York and shares her home with her dog, Ozzy.
Tammy has been with Leader Heights Animal Hospital since November of 2015 as a Veterinary Assistant. She has grown up with different kinds of animals and this love made her want to pursue a career in the veterinary field. She lives in York with her husband, their dog, cats, and a turtle. She has a step son who lives in Baltimore.
Tammy also takes care of injured and orphaned pigeons. She enjoys hiking with her husband and dog, music, gardening, and being with her critters.
Brooke is a passionate animal lover and cyber high school student, who is one of our Kennel Attendants. While your pet(s) is boarding or hospitalized she keeps them happy, healthy and works closely with the veterinarians to ensure that your pet is thriving! Ever since Brooke was a child, she's had a huge soft spot for animals of all kind. Having had cats, kittens, dogs, puppies, guinea pigs, birds and rabbits, she became drawn to furry friends. Being so passionate about all animals lead her to become a vegetarian at just 14 years old, and later, vegan, at 15. At home she enjoys playing with her rambunctious Catahoula Leopard mix puppy, Leo. Brooke plans on furthering her education after high school to become a Veterinary Technician, and dedicate her career and life to keeping your beloved pets happy and healthy!
Michelle has been a part of Leader Heights Animal Hospital since September 2017. She graduated from Spring Grove Area High School and is currently a student at YTI to become a Veterinary Technician. Her path began by homing feral kittens. Michelle lives with her family pets, Frankie (dachshund), Midnight (cat), and her first homed feral cat, Elvis.
Bio coming soon!
Bio coming soon!
Tristan has worked at LHAH since August of 2017. He is a junior at Dallastown Area High school and wants to go to college for Veterinary Science. He has 4 cats and 2 dogs and loves and cares for them dearly. In his spare time he likes to hang out with friends and cuddle his animals and watch movies.
Becky has worked for Leader Heights since 1995. She is married with two grown daughters of whom she is very proud. She has an 18 year old cat named Emily who is loved and spoiled by the whole family. Christmas is both hers and Emily’s favorite time of year. Vacationing at the beach with her family is her favorite getaway.
Elsa came into our lives on Sunday 1/31/16. She was found frozen in the road by one of our technicians, Ally. At the time, Ally still felt a faint heartbeat and knew she had to act fast. She called our lead Technician, Mary Kay, and the two of them rushed into the hospital to save our sweet Elsa. Under the direction of Dr. Pienschke, Ally and Mary Kay were able to slowly warm her up, hydrate her, and get her something to eat. At that moment we new she was special. We estimated that she was barely old enough to be away from her mother and designated December 7, 2015 as her birthday.
The next day the staff met Elsa and continued her care. She spent her first few weeks being carried around in scrub pockets and sleeping on laps. She warmed our hearts and we knew she had found her forever home. After a Facebook and in-office poll, our clients chose to name her Elsa.
Today Elsa enjoys running away from staff, monitoring the halls and lobby of the hospital, sleeping on warm towels and heating pads, and keeping recovering patients company. She is not your typical hospital pet, as she hides from nail trims and flea/tick treatment, and is not very social, but she makes us all laugh with her shenanigans. She also loves to sleep in the sun and watching the birds outside. You will often see her sitting in the window of the treatment room, where she can supervise the staff.