yawning puppy in foodbowl

Welcome to
Oak Hammock Animal Hospital

We look forward to being a part of your pet's life journey, and helping you keep them healthy year after year. Your trust is important to us, which is why you can always expect first-rate service from our team of dedicated veterinary professionals.

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Experience the Gold Standard of Veterinary Care

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There is nothing more fulfilling than taking care of pets and their owners, and being able to cultivate long-lasting friendships with members of our community. Our animal hospital in Sebring operates on the values of compassion, teamwork, integrity, and providing the highest quality of care possible at a fair price. We use our genuine love and respect for animals as a foundation for sharing our knowledge and exceeding your expectations with every visit.

We’re committed to using the most reliable and cutting-edge technology available. In addition, we believe in treating everyone who walks into our hospital with honesty, empathy and professionalism. It’s what you and your pet should expect every time you come in to see us, and what we strive for every day.

Dr. O'Sullivan has years of experience practicing high quality, progressive veterinary medicine. He looks forward to bringing this experience to Sebring and its surrounding communities, and becoming "your other family doctor."

Services We Offer

Services We Offer

Our full-service animal hospital has the capabilities for providing outstanding medical care and additional services to accommodate your pet’s needs. These include:

  • Preventative care
  • Wellness packages
  • Vaccinations
  • Dental care and dental radiology
  • Surgery
  • Laser therapy
  • Digital radiology and ultrasound
  • In-house laboratory diagnostics
  • Dermatology
  • Parasite prevention
We're Proud to Have Your Trust

We're Proud to Have Your Trust

At Oak Hammock Animal Hospital, we regard you and your pets as family. Pets bring us together, and we are honored to be trusted by so many loving owners with the care of their four-legged companions. To remain your trusted veterinarian, we follow these core values: Compassion, Teamwork, Quality Care, and Integrity.

Dr. O'Sullivan is excited to be back in his hometown and to be serving the Sebring and surrounding Highlands County community. We look forward to spending many more years caring for your pets and being an educational resource for you. We're dedicated, heart and soul, to ensuring the continued good health and longevity of your pet.

Learn More About Us

Learn More About Us

Our website is here for you to get more acquainted with our hospital, our team, and the services we provide. We’re just a phone call away, so if you have any questions about the services we offer or need to schedule an appointment, let us know at (863) 655-3155

News & Events

News & Events

For the latest news and events at our hospital, follow us on Facebook.


Dr. O’Sullivan and his staff are AMAZING!! They genuinely care for the animals that they take care of!! When you walk in the door you feel like family. Our boy Kaos has always gotten the best treatment (and treats) from the entire staff. We found a missing dog today and even though it was after regular hours and a busy afternoon due to them having open house we were still told to bring the dog down to be scanned for a microchip and then they started making calls and helping to locate the dogs owners. They also kept him at the facility until his owners were  found and came to pick him up! They played a HUGE part in reuniting this pup with his family!!!

Heather B.

So amazed by Dr. O'Sullivan.. He is just an Awesome vet very caring and talks you through all info and keeps you up to date and informed on your babies (pets) info.. So thankful we found him!! It is so worth the drive to see a great vet...

Michelle S.

Met Dr. Chris O'Sullivan at Oak Hammock Animal Hospital last week, and pretty much decided he's our new vet on the spot. He was very kind, thorough and knowledgeable about what was ailing our dog Maggie, and offered different options on taking care of her.  As a plus, Maggie seemed to like him, too.  The staff is so nice and friendly.....a welcome experience.  

I am happy to highly recommend Oak Hammock Animal Hospital and I'm very relieved to have found them, thanks to a close friend's recommendation. 

You never want to be in a situation where you need a vet's care, but I look forward to seeing these folks the next time I do!

Kathy R.

Our family would like to thank the staff at Oak Hammock Animal Hospital for the excellent care you provide our four dogs. We recently brought two of our little guys in and Dr. O'Sullivan took care of them and sent them home healthy and happy. We also appreciate the follow up by your folks on their condition. It shows your concern and care ethics.

Thank you all for you do for our little guys!

The Winklers

The entire staff at Oak Hammock Animal Hospital are amazing. The front staff treat our dog Max like he is their own child. He gets lots of love and treats from the staff every time we come in. Dr. O'Sullivan listens to every concern we have and is willing to go the extra mile to calm our worries. Max absolutely loves going to the vet. It is one of his favorite places to go! Last year our dog Mongo was diagnosed with cancer. They did everything they could to help him, including sending him to specialists. Unfortunately, his cancer was too advanced to treat. However, they gave him everything they could to keep him comfortable and gave him a few extra months of pain free life. When he was at the end, they allowed us to sit outside under the trees with him as he was put to sleep. They showed him and us the same concern they would have for their own pets. His passing was treated with the same love and respect you expect for any family member. I would never use any other animal hospital.

The Mullins Family

My family has been coming here to Oak Hammock Animal Hospital previously named Anderson Animal Clinic for over 15 years. We did our research on the vet doctors and prices in the area and this was and still is the best option. Always friendly and pleasant atmosphere.

Frankie D.

This is the best animal clinic I have been to. The vets and techs are great with your fur babies. Receptionists are very pleasant.

Cheri F.

Awesome place. Knew very quickly what was wrong with my dog. Did emergency surgery immediately, and saved our dogs life. Everyone there was super friendly. Was also very reasonable on price. I would definitely recommend Dr. O’Sulliva to anyone.

Jeanette O.

First impression – super clean and super friendly!  All the people there enjoy what they do, for sure, as it is so obvious.  Dr. O’Sullivan was spot on with amazing beside manners.  Really takes him time in ensuring you understand everything and answers all your questions.  Definitely the place to bring your fur babies!

Lori O.

The animals at my home are not just pets, they are family.  I love them dearly and will do what is necessary to keep them happy and healthy for their lifetime.  Having a good relationship with a Veterinarian is critical and I cannot possibly tell you how much I trust and recommend Dr. Christopher O'Sullivan at Oak Hammock Animal Hospital.  Over the years he has helped my pets with all kinds of minor and critical medical issues.  His compassion, knowledge and skill are exceptional.  He will explain the situation for my understanding and offer options as to how to proceed.  His digital equipment is perfect for making an accurate diagnosis and his contacts and resources offer another level of care that he will utilize when appropriate.  The staff are very competent and will take the time to help you and your pet in a friendly and caring manner.  You will not regret a call to Oak Hammock Animal Hospital.

Tamara R.

Met Dr. Chris O'Sullivan at Oak Hammock Animal Hospital in May 2017, and pretty much decided he's our new vet on the spot. He was very kind, thorough and knowledgeable about what was ailing our dog Maggie, and offered different options on taking care of her. As a plus, Maggie seemed to like him, too. The staff is so nice and friendly.....a welcome experience.

I am happy to highly recommend Oak Hammock , and I'm very relieved to have found them, thanks to a close friend's recommendation.

You never want to be in a situation where you need a vet's care, but I look forward to seeing these folks the next time I do!

Kathy R.

I brought my very sick dog to see Dr. O'Sullivan and he discovered he had a severe liver problem. The care and kindness shown by Dr. O'Sullivan and his staff was amazing.  With their excellent knowledge, patience and dedication, I'm happy to report my dog is back to his healthy self again. I would highly recommend Oak Hammock Animal Hospital.

Brenda W.

Oak Hammock Animal Hospital has been a wonderful experience for our family! Dr. O'Sullivan and his staff are kind, caring professionals that are great with our pets as well as with us. We have much gratitude and appreciation for them all! Thank you to all!!

Laura B.

It has been my pleasure for several years now to take my furry kids to Oak Hammock, formerly Anderson Animal Clinic.  Dr. O’Sullivan and his kind staff take wonderful care of my kitties, whether it’s just for a check-up, or if they are sick and have to stay all day or even overnight, and they take excellent care of their well-being.  Dr. O’Sullivan is very caring, keeps me informed of my pets’ health, makes recommendations that are personalized to each pet’s needs and even asks about the ones who are not at the vet for an appointment.  In fact, my kitties go see the girls in the front office for “play-dates” and I have adopted more than one kitty from Oak Hammock!! Everyone at the clinic is concerned about helping my pets to have the best possible life they can, and I feel so blessed to have such a great family of experts whose mission is to keep them safe, healthy and happy.  Thank you, Dr. O’Sullivan and your Team!!


There's no other primary care Doctor that my pet will go to other than Dr. O'Sullivan. He's always shown compassion for our dogs and given me the best advice how to care for them. He's given outstanding references to specialty doctors if by chance his office doesn't do certain types of surgeries in-house. He's always very willing to take the time to answer any and all of our questions.

The follow-up calls also mean a lot to us. He often calls to check on the progress of our dogs after appointments.

Our dogs have been, and always will be, very lucky to be under Dr. O'Sullivan's care.

Jarrod B.

Dr. O'Sullivan is very caring and shows his love for animals in everything he does for them. My dog had a very scary event and Dr. O'Sullivan stayed late and waited for test results so he could tell me what was going on with my pet after the clinic was closed. I appreciate all the staff for their patience and caring for a very upset family of a sick pet. I recommend this clinic to anyone who loves their pet and expects excellent care!

Cheryl M.

Dr. O Sullivan. Is the best he goes beyond an above in taking care of our babies from babies to your seniorbabies. He's the best where ever he's at.

Teresa F.

THANK GOD DR. O'SULLIVAN HAS MOVED HERE! He's been a blessing to my pets for years. He's compassionate, knowledgable, & gives the BEST care to my fur babies. He'll treat your animals as if they were his own.

Willow G.

I travel an hour to get to this clinic. Dr O'Sullivan is the best! The service is top notch from check in to check out. It's hard to find a Veterinarian that you can trust with your babies. Reasonable prices and good care, from a loving veterinarian and staff.

Sherri P.

I used to visit Dr. O'Sullivan years ago when he was in North Carolina. His compassion and knowledge saw me through the last stages of my dog, Leia's life. I know that if he utilizes even a fraction of the knowledge, heart, and skill he used back then, at this practice, all animals are in good hands. He might not remember me or Leia, but he sobbed with me when we had to make the decision to end her pain. I'll never forget it, and will always be grateful for such a wonderful caregiver for me pets. I've moved to Massachusetts and gotten married since those days, but I use Dr. O'Sullivan as a benchmark for care for my animals today.

Heidi A.

I couldn't be happier with the care my cats get from Dr. O'Sullivan and his staff. He has so much compassion and always takes the time to thoroughly explain everything. Even made a follow up call to check on my cats progress. The whole staff have been nothing but wonderful every time I have been there.

Pat D.

Dr. O’Sullivan is so passionate about the animals he sees. He doesn't rush through appointments he takes his time and makes sure he answers any questions you might have, and is always very open about what he thinks. You can tell he loves what he does and he truly cares about all his Clients and patients. Only place I'll ever take my animals 🙂

Marjorie R.