Meet the Veterinarians & Team of Harmony Animal Hospital.

Our Purpose: We exist to add more love to the world by nurturing pets and their families.

Casandra Fowler, DVM

Owner, Veterinarian
Dr. Fowler was born and raised in Kentucky, where she graduated from the University of Kentucky with a BS in Biology. Moving to Virginia, she attended the Virginia-Maryland Regional College of Veterinary Medicine and graduated in 2005. She went on to practice at several companion animal clinics in the Northern Virginia area. In 2019, she was able to realize her dream of opening her own veterinary practice.

Dr. Fowler is excited to be able to offer her compassionate, competent, and fear-free style of veterinary medicine to companion animals. She is a Fear Free Certified Professional and looks forward to providing care in the first Fear Free Certified Practice in the Northern Virginia Area.

She also looks forward to providing medical care to multiple rescue organizations and working closely with the community to provide services and education to all. She is proud to be a Morris Animal Foundation Golden Retriever Lifetime Study Veterinarian (

Dr. Fowler currently resides with her husband and three children along with dogs, cats, 2 guinea pigs, and a rabbit.

Wendy Kuo, VMD

Associate Veterinarian
Dr. Wendy Kuo earned her degree in veterinary medicine from the University of Pennsylvania in Philadelphia, PA. Since graduation, she has practiced general and emergency medicine in the D.C. Metro area.

Prior to veterinary medicine, Dr. Kuo utilized her background in electrical and biomedical engineering as a Patent Examiner at the United States Patent and Trademark Office. It was during this time that she began shadowing Dr. Hart at Kingsview Animal Hospital and was inspired by the loving kindness given to every animal and their families. She is honored to have the opportunity to join Dr. Fowler and the Harmony family, a family dedicated to providing state-of-the-art veterinary care for its community.

Dr. Kuo is a Fear Free Certified Professional who strives to understand the unique needs of each patient in order to provide individualized care. She believes in an integrative approach to care and hopes to pursue a certification in acupuncture.

In addition to veterinary medicine, Dr. Kuo enjoys spending time with her family and one lovably rambunctious Boston terrier named Bella Jane.

Allison Hagner, DVM

Associate Veterinarian
Dr. Allison Hagner grew up in an Air Force family, living in South Carolina, Ohio, and England. She earned her undergraduate degrees in Biology and Psychology at Washington University in St. Louis, Missouri (WashU). She grew up with Scottish Terriers but decided veterinary medicine was her path when she and her husband, Chris, adopted two cats. She earned her veterinary degree from the Virginia-Maryland Regional College of Veterinary Medicine and worked in private practice for 8 years while starting a family. She then took some time off from practice to spend more time with her family of four young children. During which Allison taught preschool music, supported all levels of scouts, volunteered for her church (Providence Presbyterian Church) and many other community organizations.

In 2021, Allison volunteered for the COVID-19 vaccination effort. She has a special interest in surgery, dermatology, and ophthalmology. Over the years, Dr. Hagner has had many pets and has fostered a number of dogs. Her two rescue dogs, Jocko and Maisy, two cats, Azira and Ms. Crowley, keep her family busy. She enjoys spending time with her family, singing (in her church praise band and scout songs at camp), baking, biking, hiking, archery, kayaking, camping, reading, and photography.

Denise M.

Practice Manager
Denise knew from a very early age that she was destined to have a career working with animals. She graduated from Virginia Tech, double majoring in Biology and Animal Science. After graduating she worked with Dr. Hart at Kingsview Animal Hospital for over thirty years until his recent retirement. While there, she expanded her knowledge of veterinary medicine and became his right hand, acting as a technician, practice manager and client liaison.

Denise started working with Dr. Fowler in 2017 and knew immediately that she was an excellent veterinarian and would make a wonderful practice owner. Denise has done a wonderful job managing Harmony Animal Hospital and helping Dr. Fowler grow a successful and compassionate practice.

Denise enjoys continuing her education in veterinary medicine and practice management. She is always open to new ideas that improve animal care. She is a Fear Free Certified Professional.

In her spare time Denise enjoys spending time with her loving husband at a cabin and taking time to enrich her spiritual life. She and her husband are currently empty nesters to four wonderful children. They share their home with their sweet rescue cat, Woody. 

Elizabeth E.

Office Manager
Elizabeth was born in Germany and cultivated an early love of travel after living in many different places growing up. She knew that one day, she would have a career that centered around her love of animals. As a senior in high school, she worked at the Cheyenne Mountain Zoo in Colorado, assisting with koalas and hippos. After moving to Northern Virginia, she attended George Mason University and graduated with a B.S. in Chemistry.

Elizabeth is a Fear Free Certified Professional and has over 20 years of experience in small animal medicine. She was an Assistant Manager at Kingsview Animal Hospital, and before Harmony she worked at the Veterinary Holistic Center learning the importance of connecting conventional and holistic medicine for the overall well-being of the animal.

At Harmony, she enjoys animal dentistry, lab work, and being part of a team. The most fulfilling part of her job is connecting with clients and their pets to help educate and emphasize the importance of the human-animal bond.

When not at the hospital, Elizabeth is a licensed equestrian trainer. She started riding horses at an early age, moving on to compete professionally in jumpers and playing polo. When she has a day off, Elizabeth loves to read, hike, enjoy her friends, and spend time with her husband, Andrew. Whenever possible, they visit the Outer Banks where they love to surf. They are the pet parents of two quirky rescue cats, Ronald-Bananas and Ginny, littermates raised by our veterinary staff. They also have a rescue miniature poodle named Raymond and two big Borzois named Sam and Omie.

Jill R.

Jill was born and raised in Northern Virginia. She started her career in veterinary medicine volunteering in middle school, and then working part-time during high school, for Dr. Hart at Kingsview Animal Hospital. She graduated from George Mason University with a BA in Anthropology. She then took a brief stint working an administrative desk job before realizing that veterinary medicine was her calling. She returned to Kingsview in 2007 where she worked as a technician until Dr. Hart’s retirement.

Jill has always had a love for all animals and is a passionate believer that all animals deserve our help and respect. She is delighted to be working for Dr. Fowler as part of the Harmony team. Jill is a Fear Free Certified Professional.

In her free time Jill enjoys reading, gardening and various crafting activities. She enjoys spending time around water, especially the beach, and loves visiting Corolla in the Outer Banks.

Jill has a whole herd of guinea pigs! Their names are Daisy, Poppy, Petunia, and (her rescued piggy) Mocha!

Mary N.

Mary’s career interests have always been centered around animals and began with her first job as an attendant at a doggie daycare. Mary attended the University of Mary Washington where she earned her BS in biology with a pre-veterinary concentration. After graduation, she completed an internship at a wildlife rehabilitation center where she worked with a variety of orphaned and injured wildlife such as raccoons, foxes, bats, opossums, reptiles, and birds. During her time there, she had her first exposure to a veterinary setting and quickly realized that working at an animal hospital is where she’s meant to be.

Mary started working at Harmony in December of 2020 and has been a Fear Free Certified Professional since March of 2021. She is currently enrolled in classes at Northern Virginia Community College to become a licensed veterinary technician and loves having the opportunity to expand her knowledge to better serve the patients at Harmony.

In her free time, Mary enjoys spending time with her pet rats and her cat, Maisie. She also loves to eat pasta and watch House Hunters!

Erica L. LVT

Meet our Hospice and Palliative Care Nursing Coordinator!

Erica is a Licensed Veterinary Technician and Harmony’s new Hospice and Palliative Care Nursing Coordinator. She attended veterinary nursing school, took a national medical board exam and obtained a license from the state of Virginia to practice veterinary medicine as a technician. She has worked in the field since 2008, and has experience in a number of areas including general practice, mobile practice, exotics, oncology (about seven years) and most recently hospice and palliative care.

After joining the Harmony team in 2021, Erica became Fear Free Certified and is a Certified Compassion Fatigue Professional as well. She completed the CAETA (The Companion Animal Euthanasia Training Academy) Master Training Program in euthanasia best practices and end of life care. She is currently finishing an extensive certification program through IAAHPC (The International Association for Animal Hospice and Palliative Care) in hospice, palliative care and advanced pain management, which requires over 140 hours of hospice specific education and training.

Erica is excited to be developing Harmony’s hospice and palliative care service and will be working closely with Drs Fowler, Kuo and Hagner, to ensure that patients receiving hospice or palliative care- and their families- will have their needs met and be supported throughout this difficult process. Erica also has a B.A. in Environmental Studies and a minor in writing.

In her free time she enjoys being outdoors, gardening, reading, writing, visiting National Parks, cooking, traveling, and relaxing with a nice whiskey. She and her husband, Matt, currently share their home with two young dogs, River (adopted from WTAR) and Fern (adopted from HART), but have also loved four fantastic rabbits (Snicket, Boo, Edgar and Fergus) and a hamster (McNugget).

Alex L.

Online Media & Marketing Manager
Alex grew up in Maryland and had a love and fascination for all animals from the beginning. She grew up around dogs, cats, reptiles, small mammals, fish, and horses. Her professional pet-care career path started with a few years of front desk work at a boarding facility before making the jump into the world of veterinary care. After almost a year and a half, she fell more in love with the veterinary field when she stumbled upon the new Harmony Animal Hospital and learned about Fear Free methods for the first time.

Alex was hired by Harmony during their first year of business in July of 2020. She held the title of lead CSR and worked hard to keep the front desk running for almost 2 years, while also managing our social media pages. She has now stepped down as lead CSR to focus more on social media, ma