Welcome to Kingsley Animal Hospital
Your Veterinarian in Orange Park,FL
Call us at (904) 264-2419

Pet Emergency? Call us right away at (904) 264-2419!

Image of a dog wearing a stethoscope

Kingsley Animal Hospital is a full service companion (cats and dogs) animal hospital. We place the care, diagnosis and treatment of your pet as our primary concern. We offer a comprehensive, progressive and compassionate approach to medicine and surgery. We offer a wide range of medical, surgical and counseling options – both traditional and holistic.

It is our medical staff’s commitment to provide quality care throughout the life of your pet. We provide services such as wellness exams, hospitalization, nursing care, vaccinations, pharmaceuticals, supplements, general surgery, digital x-rays, complete laboratory services, dental care, behavioral counseling and nutrition counseling.

We understand the special role your pet plays in your family. Together, we take a proactive approach that can maximize your companion’s quality of life. We treat your pet as our own. We believe that preventative care and good nutrition are the keys to optimal health – for a happy and long life!

Client satisfaction is very important to us. We are a friendly, experienced team and know that it is through respect, integrity and exceptional care, that we earn our patient’s and client’s trust.

Dr. Thomas Fredenhagen
Orange Park Veterinarian | Kingsley Animal Hospital | (904) 264-2419

1070 Kingsley Ave
Orange Park, FL 32073

Meet Our Skilled Team

Learn Who We Are

  • Thomas A. Fredenhagen,
    DVM and Co-Owner

    Thomas A. Fredenhagen, DVM (aka “Dr. Fred”) was born in St. Augustine, FL and raised in Palatka, FL. He attended St. Johns River Junior College and the University of Florida, before receiving his DVM degree from Auburn University in 1976.

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  • Karen Fredenhagen
    Veterinary Technician and Co-Owner

    Karen Fredenhagen has been a Veterinary Technician for more than 25 years. Her areas of extensive experience include surgery, special needs, nutrition, acupuncture / homeopathy (studied under Dr. Peggy Flemming for four years), behavioral counseling and laser therapy.

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  • Tammi
    Veterinary Technician

    Tammi started in veterinary medicine in the summer of 1991 in South Carolina. When her family moved to Florida in 1994, she continued as a technician at a general practice office in Jacksonville. She has been at Kingsley Animal Hospital since 2000.

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  • Grace
    Veterinary Technician

    Grace joined the Kingsley Animal Hospital family in February 2015. Her love for animals shows every day when she walks through the door, as well as through her volunteer work with organizations such as the Jacksonville Zoo and wildlife rescue centers.

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  • Samantha
    Veterinary Technician

    Samantha officially joined our team in February 2017, though she had previously been seen in our rooms quietly observing Dr. Fred which is needed for vet school.  She graduated from the University of North Florida in 2015 with a Bachelor of Science in Biology and aspires to be a veterinarian one day.  Samantha’s love of animals runs deep, but has specific affections for dogs, cats, horses, and wolves.

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  • Tara
    Veterinary Technician

    Tara is a local of Green Cove Springs. She has worked in the veterinary field since 1998. After being a receptionist for two years, she became a veterinary technician and never looked back. Over the years, her experience grew from working at local animal emergency clinics. When she is not caring for the loved ones of her clients, she is raising her family.

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  • Nikki Veterinary Technician

    Nikki joined the team in 2018. After working high volume facilities, she wanted to work in an atmosphere where her love of animals could make a real difference. Her knowledge of nutrition in her personal life made her a perfect candidate to help guide clients towards a more natural diet for their furry family members.

  • Clyde
    Greeter and KAH Mascot

    Clyde was a kitten that came to us from the Safe Animal Shelter in 2001. He greets everyone as they walk into the hospital. He loves to be petted and have his belly rubbed, and may even climb up on your shoulder.

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Read What Our Clients Say

  • "Happy to find a vet that has a well rounded, holistic approach and offers proper nutrition and acupuncture services."
  • "Dr. Fred is the best he has taken care of my little girl for 13 years. Could not ask for any better than him. THANK YOU DR. FRED for everything. Love the staff, you have a question they have the answer. Tammy is awesome and the sweetest person you could know."

Featured Articles

Read about interesting topics

  • Feline Distemper

    Feline distemper or feline panleukopenia is a highly contagious viral disease of kittens and adult cats caused by the feline parvovirus. It is also called panleukopenia as it affects the bone marrow and causes low white blood cell counts. It is relatively common in unvaccinated cats and is often fatal, ...

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  • Bloat and Gastric Torsion

    Bloat and gastric torsion is a serious condition and your pet should be rushed to the emergency room if this occurs. Certain breeds of dogs with deep chests and narrow waists, such as hounds, bouvier des Flandres, or doberman pinschers are more susceptible to a syndrome of gastric torsion and bloat. This ...

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  • Ruptured Anterior Cruciate Ligament (ACL)

    The rupture of the cruciate ligament is the most common knee injury in the dog. This injury has two common presentations. One is the young athletic dog playing roughly who acutely ruptures the ligament and is non-weight bearing on the affected hind leg. The second presentation is the older, overweight ...

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  • Canine Distemper

    Canine distemper is caused by a virus that is shed in bodily fluids of infected animals. The virus affects primarily the lungs, intestines, and nervous system. Symptoms of the infection can include coughing, diarrhea, vomiting, inappetance, dehydration, weight loss, seizures, and encephalitis. Secondary ...

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  • Vertigo or Old Dog Vestibular Syndrome

    Vertigo is a syndrome in the elderly dog, which can be very frightening to the owners. The dog is suddenly afflicted with a balance problem, usually staggering, but occasionally unable to stand, and more rarely actually rolling over and over. There is a tilting of the head to one side and nystagmus, ...

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  • Gastric Dilation Volvulus (GDV)

    Gastric Dilation Volvulus (GDV) is a life threatening, acute condition that requires immediate medical attention. Certain breeds are more prone to this condition: Boxers, Great Danes, Standard Poodles, Saint Bernards, Irish Setters, Dobermans, Weimaraners and Gordon Setters. These breeds are considered ...

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  • Canine Parvovirus (CPV)

    The Parvovirus is known worldwide and causes disease in many different species of animals. Different strains of virus only infect certain types of animals. For example, the Canine Parvovirus (Parvo) will mainly infect dogs and does not cause disease in cats or humans. Feline Parvovirus, a different strain ...

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  • Glaucoma in Cats

    Do you know the signs of glaucoma in cats? ...

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  • Preventing Obesity in Cats

    Even one extra pound could affect your pet's health. Find out how you can keep your cat slim and trim. ...

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  • 9 Reasons Your Cat May Be Losing Weight

    Does your cat look thinner than usual? One of these nine reasons may explain why your cat is losing weight. ...

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Location & Hours


Office Hours

Our Regular Schedule


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-12:00 pm