Riverbrook is staffed by knowledgeable and caring professionals who are sensitive to the needs of you and your pet. As pet owners themselves, each staff member values the importance of pets as family members and is eager to assist you with any questions you may have about your pet’s health.       



Dr. Jana Layton, DVM

Riverbrook Animal Hospital was started by Dr. Robin Johnson in 1998. Dr. Layton started working at Riverbrook in June 2007 and purchased the practice from Dr. Johnson in March 2009. Dr. Layton considers it a true gift to have the opportunity to carry on the mission of Riverbrook Animal Hospital. The hospital will continue to strive for providing exceptional care, customer service and making a positive impact on all the lives the hospital comes in contact with. A commitment to continued education and training for the entire staff so they may provide the best veterinary medicine possible is a vision passed on by Dr. Johnson and embraced by Dr. Layton.

Dr. Layton was born in Tulsa and raised in Claremore, Oklahoma. She completed her undergraduate degree in biological science at the University of Tulsa in 1994. After spending a summer working on her dad’s farm, she decided to merge her love of animals and devotion to science into a career in veterinary medicine. Dr. Layton received her Doctor of Veterinary Medicine degree from Oklahoma State University in May of 2000.

Her pet family consists of 2 Pitbulls named Winnie and Layla and one cat named Sambino. Aside from her love of animals, Dr. Layton is active in her church and loves to garden, read, knit, and play the banjo.


Dr. Lauren Davied, DVM

Dr. Lauren Davied has cared for pets as a general practitioner at Riverbrook Animal Hospital since February of 2011. Born and raised in Tulsa, Dr. Davied is a graduate of Tulsa Memorial High School. She loves animals and is passionate about veterinary medicine. Strengthening and improving the human-animal bond is very rewarding for her and she enjoys interacting with clients and their pets each day.

Dr. Davied attended Oklahoma State University and received her Bachelor’s Degree in Animal Science (with an emphasis on pre-veterinary medicine) in 2006. She continued her veterinary education at the Oklahoma State University College of Veterinary Medicine and was awarded her Doctorate of Veterinary Medicine in 2009.

Internal medicine, ophthalmology and surgery are among her many professional interests. She is a member of the Oklahoma Veterinary Medical Association, Tulsa’s Young Professionals, Forte! and is a Kappa Alpha Th

eta Alumni.

Outside of the hospital, she enjoys music, painting, working on her house, and spending time with her friends and family. She shares her home with two rescue pets, an Australian Shepherd named Whiskey and a dilute Calico named Poppy.




Dr. Katie Greenwell, DVM

(bio coming soon)


Vashni started at Riverbrook Animal Hospital in 2015 as a kennel technician,  moved through all the positions and is now the Practice Manager. She has two cats, Bob and Binx, and a dog, Leela. Her love for animals began with an apprenticeship at a large animal exotics rescue and carried over into domestic animals. When she isn’t working, she enjoys crocheting, reading, working on puzzles, and being a mom to a super caring and animal loving daughter.



Ehlana has been working at Riverbrook Animal Hospital since October 2020. She grew up in various states including: Washington, Illinois, Wisconsin and Oklahoma. She attended and graduated as valedictorian from Sapulpa High School. She hopes to attend school to be an RVT.  She truly loves caring for and working with animals which started at a very young age. She began volunteering at the Tulsa Zoo in the Zoo Teen program at the age of 14 until she was 18. Working hands on with so many species, as well as being an educator and advocate for animals and conservation to the public is one of the most rewarding things she’s ever done. This carried into the veterinary field and she sincerely hopes she gets to meet and care for everyone’s pets. She has two rescue pets, Marco a Border Collie/Lab Mix and Lucille a Domestic Longhair cat. She also has two corn snakes and a golden gecko. When she’s not at work or taking care of her own pets she plays a lot of Dungeons and Dragons. 



(bio & pic coming soon)





Amber has been working at Riverbrook Animal Hospital since July 2020. She grew up in Chicago, IL. She graduated from the University of Wisconsin-Milwaukee with a bachelor’s degree in Biology and her Master’s in Forensic Science at OSU. She has always loved animals and wants the opportunity to help as many as possible while earning her Master’s degree. She enjoys listening to music, reading, working out, martial arts and kickboxing. 




                                                         (bio coming soon)







                                                      (bio coming soon)