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Our Animal Hospital History... A Local Legacy from Anderson to O'Sullivan

Oak Hammock Animal Hospital was founded as Anderson Animal Clinic by Dr. Wendell "Doc" Anderson and his wife Rosalyn in the mid 1980's. Although it started as a small, two-room clinic, the practice grew continually over the years as Doc Anderson gained a reputation for being a caring, trustworthy doctor for Sebring's pets and farm animals.

As the practice expanded in the 90's Chris O'Sullivan, a local college student and regular client, joined the practice as a veterinary assistant. Working under Dr. Anderson, O'Sullivan became certain that he wanted to turn his love for animals into a career as a veterinarian.

In 2005 the Andersons had the current 5,500-square foot hospital built across the street from their original, 1,000-square foot clinic and moved the practice. At age 75, Dr. Anderson decided he wanted to retire after 50 years of practicing veterinary medicine in the U.S. and Australia.

In June 2016 he sold his practice to his former employee, Dr. O'Sullivan. Having graduated veterinary school in 2000, Chris O'Sullivan had been practicing at a 24-hour hospital in Winter Haven before coming full-circle to become the new owner of Anderson Animal Clinic.

Anderson to OSullivan
Looking to the Future

Looking to the Future

Anderson Animal Clinic's name was changed to Oak Hammock Animal Hospital in 2018. Dr. O'Sullivan is pleased to be back in his hometown, serving the community he grew up in. He looks forward to bringing his training and expertise in practicing advanced medicine to his small-town hospital.

Oak Hammock Animal Hospital continues to provide high quality veterinary care to the dogs and cats of Highlands, Hardee, and Polk counties under its new management. Over the years significant upgrades have been made to the practice's facilities and equipment. Dr. O'Sullivan plans to continue and expand upon these improvements in order to continually improve the level of care and customer service provided at the hospital. Dr. O'Sullivan, his wife Tara, and their team look forward to meeting you and your pet, and to many years serving the Sebring community.

Our Core Values

Our Core Values

Holding ourselves to the highest standard is essential in all that we do for our patients and clients. We base our practice around the following core values:


We share a genuine love of animals and are devoted to their well-being. We treat our patients with the same love and tenderness that we provide for our own pets. We will listen to our clients’ concerns and convey empathy at all times. We strive to exceed our client's expectations by providing the best service with care and affection.


Each of our team members approaches their job with a positive attitude and is prepared to work hard. We are open and willing to communicate with all of our team members. We understand the importance of being forgiving, striving to never hold a grudge or take things personally. We approach challenges as a team and work together to conquer them.

IMG_0248_Crhis and Tara O'Sullivan
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Quality Care

We provide quality veterinary care with a friendly hometown feel while establishing long-term relationships with our clients. We take every opportunity to educate our clients about treatments and medications that we recommend, utilizing best medical practices and staying current with new protocols to provide a high standard of care.


We are always honest with our clients. We avoid favoritism and treat our clients and fellow co-workers with respect. We will consistently do things the right way and own our mistakes.