About Us

Get to know WellHaven Pet Health Denver!

Dr. Johnson, DVM

Dr. Tanner S. Johnson was born in South Carolina, but grew up in the sunshine state of Florida! He attended the University of Florida for both his undergraduate and doctoral studies, graduating in May of 2016. Following the call of adventure, he moved to Colorado shortly after and has never looked back.

During his studies, Dr. Johnson received an honorary certificate in veterinary dentistry and is a very strong advocate for dental health in pets. His other professional interests include soft tissue surgery, dermatology, and behavior. Dr. Johnson lives in Aurora with his partner and two pups: Terra, a 7-year-old female chocolate lab, and Dante, a 4-year-old male lab mix.

Karen, Practice Manager

Karen is a Colorado native who fell in love with animals at a young age of 4 when she got her first dog, Greif of Candy Cane the Second. She has raised 6 human children and countless of the fur, feather and scale variety. Her career in veterinary medicine was inspired by her daughter, who she is proud to say is now a veterinarian! Karen has devoted 13 years to the field and hasn’t looked back! Her hobbies include spending quality time with her husband and family, working in her yard, crocheting and playing with her fur babies.

Brianna, Lead Technician

Brianna was born and raised here in Colorado. Since she was a little girl she knew she wanted to be in the veterinary field. When she was 16 years old she got her first veterinary job and has loved it ever since. Brianna now has been a technician for 10 years.

Outside of work, she loves to go fishing and enjoy the beautiful mountains with her husband and daughter. Brianna is also committed to the bulldog breed. She does AKC conformation shows and breeds to the BCA standard. She is a huge health advocate for the breed and is wanting to always better the breed. Pictured below is her grand champion bulldog named Ruger. He had a very successful show career.

Kelsea, Technician

While newer to the field of veterinary medicine, Kelsea has always had a strong interest in one day working with animals. With a love to learn and a determination to seek out her passion, she gave up the career path she knew and started fresh. Now, almost a year later, she’s glad of her choices and doesn’t look back. Learning something new every day, she’s thankful to have found her place.

Born and raised in Colorado, Kelsea shares a wonderful home with her husband and their two pets. Living in Thornton, she loves to take both her dog and cat on adventures with her and hopes to experience more of Colorado with her little family. More of her hobbies include knitting, reading, and playing Dungeons and Dragons; with some video games thrown in.

Lauren, Veterinary Assistant

Ever since Lauren knew what a veterinarian was, she knew that she wanted to be one. She is currently working towards this goal and will graduate from Colorado State University with her undergraduate degree in December. What little time she doesn’t spend studying, Lauren enjoys reading, playing music, and attending concerts.

Tylene, Receptionist

Tylene is a Colorado native born and raised here in Denver. She has always loved and cared for animals since she was a little girl. Tylene has been working with furry friends for the past 6 years, she started as a supervisor working in doggie daycares and worked her way into the Veterinary field as a receptionist. Tylene has plans to go to school to be a veterinary technician and is currently expanding her knowledge with hands-on training here at Wellhaven. Outside of work she enjoys going on adventures with her son Jeremiah and her fur baby Pharrah. She also enjoys live concerts, hiking, and dirt bike riding.

How to contact us:


3480 Park Avenue West, Building G
Denver, CO 80216
Click here for directions.


Mon – Fri: 7:30 AM – 6:00 PM
Sat: 8:00 AM – 6:00 PM
Sun: Closed

December 24th, 25th & 26th: Closed
December 31st: 7:30 AM to 1 PM
January 1st: Closed

WellHaven Pet Health Denver
3480 Park Avenue West, Building G
Denver, CO 80216