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Ashley J. Barthlow, DVM

Owner / Veterinarian

Dr. Ashley Barthlow grew up on a dairy farm outside of Libertytown, MD.  She announced at the age of 10 that she would be a veterinarian.  Dr. B graduated from Linganore High School, Hood College, and the Virginia-Maryland Regional College of Veterinary Medicine.  She has worked in Frederick County her entire career starting as a mixed animal veterinarian in Walkersville and Middletown before exclusively becoming a small animal vet.  Dr. Barthlow and her husband Ray purchased Poffenbarger Veterinary Clinic in 2005.


Dr. Barthlow lives on a farm outside of Libertytown with Ray and their 2 children, Cailyn and Ryan.  They have a variety of pets including 2 feisty Miniature Schnauzers.  Dr. B loves to develop client relationships and provide lifelong preventative care to her patients through education and with a high level of communication. In her spare time, Dr. B enjoys watching their children play sports, gardening, baking, and playing volleyball. 


Ray Barthlow

Owner / Hospital Director

Ray was born and raised in Frederick.  He is a graduate of Middletown High School and Frederick Community College.  Ray proudly served in the United States Air Force and attended the University of Maryland.  Ray started his career as a Biomedical Research Associate and worked for different Biotech companies.  Before the purchase of Heritage Animal Hospital, Ray was employed with Human Genome Sciences as a researcher for fourteen years.

In September 2005, Ray and his wife, Dr. Ashley Barthlow, and fellow colleague Dr. Walter Dodson, purchased Poffenbarger Veterinary Clinic and created what is now known as Heritage Animal Hospital.  Ray joined the Heritage team full time in the summer of 2006 as the Director of Hospital Operations.

Ray and Ashley live on a family farm in Libertytown, MD with their two children, Cailyn and Ryan, and many “furry friends.”  Ray has been active in youth sports programs as a coach, but now enjoys being his children’s #1 fan as he cheers them on at every game.

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Doricela Jansen, DVM

Associate Veterinarian

Dr. Jansen grew up in Rockville and moved to Frederick County in 1994.  She graduated from Ross University School of Veterinary Medicine in 1990, and for the past 22 years has been providing small animal veterinary care at several clinics in the Frederick area.  She enjoys practicing general and preventive medicine and has an interest in dermatology cases.  She is very excited to join the doctors and staff at Heritage Animal hospital and looks forward to providing quality veterinary care to the Walkersville community. 

In her spare time, Dr. Jansen enjoys cooking, traveling, and supporting the arts in Frederick County.

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Jennifer Jaeger, DVM

Associate Veterinarian

Dr. Jaeger grew up in Union Bridge, MD with a variety of pets, including her cat, lizards, and a snake.  She graduated from Bridgewater College, VA in 2014 and the Virginia-Maryland Regional College of Veterinary Medicine in 2018.  Her interest is in small animal internal medicine and surgery with a small side interest in pocket pets.  She is excited to return to Heritage Animal Hospital as a veterinarian to help care for pets in the Frederick/Carroll County areas.

Dr. Jaeger has a beagle named Henry, who she has adopted at the start of veterinary school.  In her spare time, she enjoys hiking, exercise, swimming, and spending time with her family and friends.

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Amanda Davis, RVT

Office Manager / Registered Veterinary Technician

Amanda has been working at Heritage Animal Hospital since March 2015. After graduating Walkersville High School in 2011, she started work in the companion animal field as a kennel technician.

Amanda graduated from Frederick Community College with an Associate’s degree in General Studies in 2013 and studied at Carroll Community College where she received her Certificate as a Veterinary Assistant in 2014. Amanda graduated from Wilson College with bachelor’s degree in Veterinary Medical Technology with a concentration in business in May 2020.  

In her free time, Amanda enjoys spending time with her Bull Terrier, Bruiser, reading, and going to the beach.

Amanda enjoys watching the young animals come into Heritage and seeing them as they grow.


Jessica Cooper

Veterinary Technician

Jessica joined the Heritage team in April of 2014 as a veterinary assistant. She is also a graduate of Walkersville High School, where she played softball for 4 years. She also played tournament softball from age 10-18 where she played outfield and second base. Growing up, she always knew she wanted to work with animals.

Her favorite thing to do at Heritage is watch the young animals as they grow.

In her spare time she likes to be outside, hike, and spend time with her family.

Jessica’s favorite game to play is “Guess her age!"

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Danielle Kirkpatrick

Veterinary Technician

Danielle joined the Heritage team in October 2021. Prior to joining the veterinary world, she worked on a dairy farm milking cows and caring for calves for many years. She is a graduate of Brunswick High, where she was actively involved in the FFA.

Growing up, Danielle knew she would have a career working with animals. Little did she know that getting involved showing dairy cattle would open up a world of possibilities. 

In her free time she enjoys spending time with her son, family and friends. She enjoys hiking and kayaking, reading and napping. You can catch her at the Great Frederick Fair in the Birthing Center, watching over all of the mothers and babies. 


Danielle, along with her boyfriend Aaron, have a few pets along with a flock of sheep. The dog Diesel and kitty Patches can be found annoying everyone inside. Zero the barn kitty and Kyla the Livestock Guardian Dog watch over the flock of sheep. Kyla is an Anatolian Shepherd, a guardian breed originating in Turkey! 


Learning about new breeds and watching them grow at Heritage is a favorite of Danielle’s! 


Bethany Garcia

Veterinary Technician

Bethany started working at Heritage in 2022 as a veterinary technician.  She has been working with animals, primarily horses, since age 16.  In 2019, she entered small animal private practice. 


Bethany is a pet parent to 2 beautiful cats and a guinea pig colony.  She is very excited to be a part of the Heritage family and expand her skills and abilities with small animal patients.  In her spare time, Bethany loves to play the piano and sing.  She is also a huge horror movie fanatic.

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Chrisse Bowers

Veterinary Assistant

After over 10 years as a client of Heritage Animal Hospital, Chrisse joined the team in June 2018 as a Veterinary Assistant.  She grew up in Hagerstown, Maryland, and is a graduate of North Hagerstown High School, Frostburg State College and earned a Master’s in Business Administration from Johns Hopkins University.  She spent almost 30 years in the corporate world working for an insurance company before retiring in 2017.

Chrisse grew up with and has always loved animals.  She continued her education at Frederick Community College earning her Veterinary Assistant Certification before joining Heritage.  She enjoys working with patients and clients and is looking forward to continuing her learning and gaining experience in this field.

She lives in downtown Frederick with Al and their golden retriever, Skyler and handsome cat, Leo. In her spare time, Chrisse enjoys playing with her furry friends, hiking, mountain biking, motorcycle riding, scuba diving, and traveling.

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Alexis Payne

Veterinary Receptionist

Alexis joined the Heritage team in September 2017. She graduated from Fairfield High School in 2009. She has worked in veterinary medicine since 2007, enjoying many different roles throughout a veterinary hospital. Alexis lives in Thurmont with her husband, her grandmother, and 2 cats named Ninja and Minnie.


When Alexis is not at work she loves to spend time with her family and friends, go to concerts, and relax with a good book.


Ariel Cooper

Veterinary Receptionist

Bio coming soon.

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Emily Wilson

Veterinary Assistant

Emily is currently a senior at Walkersville High School and she is our High School Student Intern for the 22-23 school year. Emily plans to pursue a degree in Animal Science and then apply to veterinary college. Emily has always wanted to be a veterinarian because of her love for animals. When she is not interning at Heritage, she enjoys spending time with her crazy dog Duke and designing lights for the Walkersville High School Theater.

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Hannah Puryear

Veterinary Assistant

Bio coming soon.

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