Group picture of the Orchard Park Animal Hospital Team

Meet Our Team in White House

Our veterinarians and staff members in White House are here to answer your questions, alleviate your concerns and above all, help you give your pet the best care possible. We look forward to seeing you and your pet in person very soon!

Dr. Brett Houlberg

Brett Houlberg DVM with a puppyDr. Houlberg is a co-founder of Orchard Park Animal Hospital. He was born in Wisconsin and grew up in Oak Ridge, Tennessee. He has loved animals his whole life, declaring that he wanted to be a veterinarian as early as 6th grade and then proceeding to make that dream come true. He graduated from Oak Ridge High School in 1990 and graduated from the University of Wisconsin-Madison (UW) with a degree in zoology in 1993. During this time he worked as a veterinary nurse.

After graduating from UW, Dr. Houlberg attended the University of Tennessee College of Veterinary Medicine. Upon graduation in 1997, Dr. Houlberg worked in Johnson City, Tennessee for a year. In 1998, he moved to the Atlanta area where he practiced for 3 more years before finally settling in the Nashville area in the fall of 2001. He has worked in Hendersonville, as well as the Nashville (Rivergate) Pet Emergency Clinic. Dr. Houlberg’s patients include small animals and exotics. His interests include internal medicine, soft tissue surgery, and geriatric care.

Dr. Houlberg married his wife Shelley in February 2007. They met while he was caring for her sick ferret, Phillipe, and have been inseparable ever since. The Houlbergs have two sons (Landon, born in 2009, and Austin, born in 2012).

Dr. Houlberg is an avid football fan and cheers on the Vols, the Wisconsin Badgers and the Green Bay Packers. His other interests include paintball, camping, fishing, reading, movies, playing cards and spending time with friends and family. He looks forward to practicing for the rest of his career at Orchard Park Animal Hospital.

Drs. Terri and Whit Cothern

Terri Cothern DVM and Whit Cothern DVMThe Cotherns went into partnership with Dr. Houlberg at the beginning of 2018. Dr. Terri Cothern has been a veterinarian at Orchard Park since 2016. During her career, she’s had the opportunity to work at veterinary clinics in Delaware, Florida, Wisconsin, Illinois, Georgia, and North Carolina. But she recognized early on that Orchard Park Animal Hospital had that special something that set it apart from all the others.

Dr. Terri is originally from Delaware where her family still resides. She graduated from the University of Delaware in 1992 and then the University of Tennessee College of Veterinary Medicine (UTCVM) in 1996. She’s especially interested in the human-animal bond and preventative medicine. In her free time she enjoys horseback riding, reading, and painting.

Dr. Whit Cothern grew up on a tobacco, hay, and cattle farm in Smith County, TN where his parents still reside. He graduated from MTSU in 1993 and UTCVM in 1997. Whit started his veterinary career at a mixed-animal practice in Lebanon and then practiced small animal medicine in Florida. In 2004 he started working in the animal health industry and spent over 13 years at various companies in numerous roles.

Because this career necessitated constant travel, had resulted in five relocations, and would likely require more, together the Cotherns decided it was time to put down some roots. When their friends and former classmates (the Drs. Horner) expressed interest in selling their practice, the Cotherns knew this was the place for them. Dr. Terri continues to see patients on a regular basis while Dr. Whit is focused on being the practice manager and part-time Mr. Mom. They reside in the New Shackle Island area of Hendersonville where their two children (Elena - born 2003 and Will - born 2005) attend Beech schools.  They have 2 dogs (Stella and Jiggy), one cat (FiFi), 3 chickens (Sandy, Zaxby, and Popeye) and two horses (Jessie and Blue).


Dr. Phil Wentz

Phil Wentz DVMDr. Phil Wentz completed a Bachelors of Science Degree in Animal Science at University of Wisconsin-Platteville.  He attended University of Wisconsin-Madison, School of Veterinary Medicine graduating with his Doctorate in Veterinary Medicine in May of 1995.  After three years of active service in the Army Veterinary Corps, he completed a residency in Large Animal Internal Medicine and a Masters Degree in Biomedical Sciences at Auburn University in 2001. In July 2005, he achieved board certification as a Large Animal Internal Medicine Specialist and is a member of the American College of Veterinary Internal Medicine.  He enjoys all aspects of practice.  As an Internal Medicine Specialist at Orchard Park Animal Hospital he will apply his specialized training to treat small animals.  He also enjoys educating owners on wellness, dental, and surgical care. Dr. Wentz maintains memberships in the American, Kentucky, and Tennessee Veterinary Medical Associations and the American Association of Equine Practitioners.  His family is grounded by his wonderful wife, Dr. Candy Wentz and wonderful son Liam.  His hobbies include hiking, camping, fishing, and hunting. 

Dr. April Lynch-Zimmerman

April Lynch Zimmerman DVM

Dr. Lynch joined our team in the spring of 2018 after her husband (Ben - also a veterinarian) and family relocated to Sumner County.  Originally from the Louisville, KY area, she holds a B.S. in Animal Science from the University of Kentucky and graduated Cum Laude from Auburn University's College of Veterinary Medicine in 2002.  Dr. Lynch initially practiced in Nashville but lived and worked in the Lancaster, PA area for 15 years.  She and her husband are the proud parents of 2 girls (Cadence, Sarina), 2 boys (Clayton, Micah), 2 guinea pigs (Peanut, Popcorn), and a gecko named Spotty.  When not working, Dr. Lynch enjoys traveling, photography, creative writing, sports (especially UK basketball), and being a soccer mom.   She uses her love of teaching, especially science, to home school her children.

Drs. Dana and Ted Horner

Dana Horner DVM and Ted Horner DVM

Drs. Ted and Dana Horner are both graduates of the University of Tennessee College of Veterinary Medicine.  They started their veterinary careers in Cross Plains in 1998 with the purchase of Hoof & Paw Animal Clinic. The practice underwent a name change and moved to White House in 2007 where Orchard Park Animal Hospital was established.   After almost 20 years, the Drs. Horner sold their portion of the business to UTCVM classmates, the Drs. Cothern.  They plan to continue working at the practice and look forward to having more free time to spend with family and friends.  The Horner's and their daughter Sydney reside in the area with their dog (Harlee), three cats, (Elsa, Willie, and Samantha), and a gecko (Toothless)


AshleyVeterinary Nurse

Ashley joined the Orchard Park team in 2018 and has worked in various roles in veterinary medicine since 2005.   She and her husband Jeremy live in Greenbrier with their 3 children (Madalyn, Aniston, and Tucker). Ashley enjoys shopping, fishing, crafting, and spending time with her family and friends but most of her free time is spent watching her oldest daughter play travel softball.


Brittany and her two childrenVeterinary Nurse

Brittany joined the Orchard Park team full time in April of 2018, but has worked in veterinary medicine since 2002. In her free time, she enjoys camping and watching sports. Brittany has two children (Christopher and Ava), a Chihuahua (Jax), and two cats (Puddy-Tat and Oreana).


EmmaCustomer Care

Ms. Emma started working in veterinary medicine in 1970 (she must have been a child prodigy) and has been at Orchard Park since it opened in 2007. She’s semi-retired but busy as ever with yard work and hunting fake pink flamingos.  Ms. Emma has two grandchildren (Willow and Vader) and a menagerie of pets (six dogs, six cats, a guinea pig and a rabbit) she shares with her daughter, Nej.


HolliRegistered Veterinary Nurse, Kennel/Grooming Manager

Holli grew up on a farm in Hardy’s Chapel, TN, raising cattle and ostriches. She played basketball at two different colleges, earning an Associate’s degree in Science in 2010 and a Bachelor’s degree in Behavioral Studies and Mathematics in 2012. In 2015, she completed her education with an Associate's degree in Applied Science to become a registered veterinary nurse.

Holli has been at Orchard Park since 2016. In 2018, she started managing the boarding and grooming staff as well as the inventory, all while continuing to work as a veterinary nurse. Holli currently has six dogs, a rabbit, a hedgehog, and a cat.  She and her husband have a son (Cage) who also shares her passion for animals.


Holli AnnVeterinary Nurse

Holli-Ann joined our team in 2018 on a part-time basis working in the kennels while she was attending Vol State to become a Registered Veterinary Nurse.  We are proud to say she graduated in May 2019 and will soon be taking her board examinations.  She enjoys learning new things, doing anything outdoors and crafting.  Holli-Ann resides in Portland with her 2 Shih-Tzus (Timon and Pumbaa) and 2 mice (Sugar and Honey).

Jennifer (Murph)

Jennifer MurphVeterinary Nurse

"Murph" worked as a veterinary nurse for over 11 years in Mt. Juliet, TN.  She started working at Orchard Park in 2018 after relocating to the Cottontown area with her husband Terry.  They have 2 dogs Zoey (a 15 year old Beagle) and Gauge (a 5 year old Chesapeake Bay Retriever).  In her free time Jennifer enjoys being outdoors be it hunting, fishing, or riding four-wheelers.


Jennifer (Nej)

Jennifer NejVeterinary Nurse

"Nej" (that's Jen spelled backwards) has been working in veterinary medicine since 1999 and joined Orchard Park in 2007. Nej shares a menagerie of pets (six dogs, six cats, a guinea pig and a rabbit) with her mother, Ms. Emma.  She enjoys gardening and the paranormal.


Jessica and her dogCamp OPAH Counselor

Jessica joined our team in 2016 and is one of the primary care givers for your pets when staying here at Camp OPAH. She has a Standard Poodle (Kerra), a Chihuahua (Petie), two Bichon/Shih-Tzu mixes (Joey and Tucker), a Lab/Husky mix (Winter), and three cats (Lannister, Macy, and Jasper). She enjoys anything animal related, along with photography and traveling. She’s an avid UK Wildcats fan, but the three UT Vol owners still think she’s great.


Registered Veterinary Nurse

Laura was born in Salinas, CA then moved to Vero Beach, FL when she was 10.  Every year since she was a baby, her and her family would go to Jalisco, Mexico for three months during the summer.  There she spent time on her grandparent's ranch which had an array of cows, chickens, goats, dogs and much more. She loved every creature and she would tell her grandfather she wanted to be a veterinarian when she was older so she could come take care of his cows.  She met her husband, Mark, shortly after high school and they were married a couple years later.  They've moved several times before recently settling in the Nashville area. Laura attended Brown Mackie College in Louisville, KY and graduated in 2015 with a Veterinary Technician Associates degree.  She is most passionate about client education as well as continuing her own education.  During her free time she is most likely cuddling with her fur babies Lizzie and Avi, reading a book, or making some crafts.


NicoleVeterinary Nurse

Nicole began her career at Orchard Park in 2009 and has worked in veterinary medicine since 2002.  Growing up, she had always hoped to work with animals. Besides getting to do that at work, she also has two dogs, two cats, a horse and a goat. Nicole enjoys horseback riding, hiking, kayaking, and pretty much anything outdoors. She has three energetic kids that keep her on her toes!



PamVeterinary Nurse

Pam has worked at Orchard Park since 2007 and has spent over 30 years in the field of veterinary medicine. She spends her spare time raising orphaned birds, studying world religions, and caring for her Great Dane dogs. Her real passion, however, is wearing stripes to annoy her favorite co-worker, Nej.  Pam’s other interests include Canine Addison’s Disease Awareness, holistic medicine, and the No One Dies Alone program.


Paula and her dogCustomer Care Supervisor

Paula has been working at Orchard Park’s reception desk since 2015. Prior to joining our team, she worked at veterinary clinics in the Memphis area starting in 1999. In her free time she enjoys photography, crafting, and hiking and kayaking with her husband James. Paula has two Pomeranian dogs (Sargent and Sebastian) that get to come to work with their mommy every day.


SarahCamp OPAH Counselor

Sarah joined the Orchard Park team in early 2018 after moving to the area from Murfreesboro. She is a lover of all animals and currently has three guinea pigs (Buffy, Otis, and Felix) and a son (Ivan). As a camp counselor, Sarah most enjoys making sure pets staying at Camp OPAH are having a great time during their stay with us.


TiaCustomer Care

Tia joined our customer service team in 2019.  She spent the past 12 years teaching at Dayspring Academy but prior to that she worked for Root Animal Clinic in Goodlettsville.  Now that her two children are teenagers, Tia decided the time was right to come back to work at a veterinary clinic.  We are thrilled that it's here at Orchard Park! Besides the kids, she and her husband have a cat (Scrapper) and a dog (Mocha).  As a hobby she enjoys refurbishing furniture.



Customer Care

We welcomed Tonya to our team in late 2019.  She has a BS in Animal Science from MTSU and spent the last few years working at a boarding facility in Hendersonville.  She and her husband (Jason) reside in Gallatin with their son (Cayden Mark, born 2019), two dogs (Tucker and Kaiser), and cat (Gatsby).  She also has a horse named Ebony.  Tonya enjoys horseback riding and hiking with her dogs.