Dr. Rebekah Byrd: Owner/Veterinarian

Dr. S. Rebekah Byrd received her Doctor of Veterinary Medicine degree from Texas A&M University in 1997. While attending veterinary school, she also completed her Master of Science degree in 1995. Prior to that she earned a Bachelor of Science in both Animal Science and Veterinary Science.

Dr. Byrd was employed as a staff veterinarian at Northern Oaks Bird and Animal Hospital for three years prior to purchasing the practice in 2000.

Her special interests include internal medicine and avian and small exotic animal medicine.

She is a member of the American Veterinary Medical Association, the Texas Veterinary Medical Association, member and past-president of the Veterinary Medical Association of Bexar County, the Association of Avian Veterinarians, and the American Animal Hospital Association.

In addition to her three children and husband, her family includes three large dogs and four cats.

Dr. Maria Martinez-Diaz: Associate Veterinarian

Dr. Maria Martinez-Diaz is a graduate of Texas A&M University and the Ross University School of Veterinary Medicine. Since the time of her graduation she has been working in a small and exotic animal practice and has experience managing a very diverse and interesting caseload. Her interests include dentistry and internal medicine.

Originally from Puerto Rico, Dr. Martinez-Diaz is fluent in Spanish as well as English. She is a member of the American Veterinary Medical Association as well as Veterinary Medical Association of Bexar County. She enjoys spending time outdoors, loves crossfit, salsa dancing and spending time with her dogs, Ginger and Roo.


Lead Technician/Manager

Jessica joined our health care team in July of 1997. She has been the lead technician of Northern Oaks since 2007. Jessica is a Licensed Veterinary Technician, having earned her degree through an AAHA accredited school in 2012. Her special interests include dentistry and radiology. Jessica and her husband have two boys and two dogs. She enjoys gardening and spending time with her family.


Practice Manager

Leather joined the team in 2012 as a Client Care Specialist. She was promoted to Inventory Manager in 2014 and became Practice Manager in 2015. Leather is married to her childhood sweetheart and together they have a dog, three horses and a very special cat. She enjoys horseback riding and spending time with her husband and fur kids.



Nikki has been working at Northern Oaks since July of 2012. She started as an assistant and was promoted to Veterinary Technician in 2016. She has completed her degree through Cedar Valley College and looks forward to becoming a Licensed Veterinary Technician. Nikki would like to pursue a radiology specialty in the animal field. She has converted her fiancé into an animal lover. Together they have a cat named Zane and a dog named Kratos. She loves being active outside or working out in the gym but is mostly a homebody.



Joeann joined the Northern Oaks team in 2014 as a Kennel Tech during her Senior year in high school. She was promoted to assistant shortly thereafter and has since been promoted to Technician in 2017. She has always loved animals and enjoys coming to work and doing everything she can to help the many pets seen at Northern Oaks. Outside of work she loves to watch movies, spend time with her boyfriend and her two dogs, Blitz and Jasper. Working with animals is her passion and she is currently pursuing her degree to become a Licensed Veterinary Technician.



Ellen previously worked with Northern Oaks as a receptionist and assistant while attending college. She recently returned to Northern Oaks as an assistant after graduating, working for her in-law’s company and welcoming a handsome baby boy. She has a German Shepherd named Samantha and a cat named Lola. She enjoys fishing, being outdoors, and spending time with her husband and son.


Assistant/Kennel Tech

Kristen joined the team at Northern Oaks in 2016. She was new to the field but felt it was a terrific fit for her. She has a passion for caring for animals and this position has allowed her to explore this field as a new career. Kristen is married with four children, 3 boys and a girl. She has a miniature Schnauzer named Duncan, a Corn snake named Einstein and a Chinchilla named Cosmo. They have added a new member recently named Harvey, an American Bulldog mix. In her spare time she enjoys relaxing with her family and pets.



Abby has been in the veterinary industry for 3 years. She began working for Northern Oaks as an intern in a high school program in 2014. Since graduating high school she has enrolled at UTSA to study Biology. She enjoys spending time with her two dogs, Darth Vader and Fifi.


Assistant/Kennel Tech

Chris became a Kennel Tech with Northern Oaks in 2017. He was quick to learn and was promoted to Assistant. He is a student at San Antonio College and studying pre-nursing. Chris has four dogs and enjoys being outside, jeeping and spending time with his dogs and family.



Carolyn is our newest team member. She joined Northern Oaks as an Assistant in October 2017. She is a senior in high school and has always been interested in the field of Veterinary medicine. She enjoys time with her family and her dog Zoe.


Lead Client Care Specialist

Leah has been a member of the team since 2000.  She is the lead receptionist and loves seeing our clients and patients every day. Leah has four awesome cats and loves camping and spending time with her adorable son, Namor. 


Client Care Specialist

Amy has worked in the Veterinary field for over 19 years. She joined the Northern Oaks team in 2014 as an Assistant and has since become a Client Care Specialist. She has two dogs, two birds and a horse. She enjoys watching horror movies and spending time with her fur and feather babies.


Client Care Specialist
Dottie joined our team at the end of August, 2017. She has over 30 years experience working as a veterinary receptionist. Dottie loves the interaction with the clients and their pets. She has three kitties she adores and loves very much. Her passion in life, since she was a little girl, has always been animal conservation.


Client Care Specialist

Sarah has been a part of the Northern Oaks team since 2011. She loves getting to greet so many pets and their owners when they come in to the hospital. Sarah has a special place in her heart for big dogs, as her most recent pet was a Great Dane named Bruce. She misses him very much, and loves giving hugs to big dogs that visit the clinic because they remind her of him. When not at work Sarah loves spending time with her 2 year old niece, as well as the rest of her family. She also recently got engaged to be married! Sarah is grateful to God for all of the blessings in her life and looks joyfully ahead to her future.


Client Care Specialist

Alison joined the Northern Oaks team in 2017 after raising her two kids. One now lives in Dallas and the other in Lubbock. She and her husband love being empty nesters. They enjoy taking road trips, watching football, going for walks and hanging out with their five cats. She looks forward to getting to know all our wonderful clients and their fur babies in the years to come.



Lori has been grooming pets for 11 years. She attends continuing education to stay abreast of new and interesting techniques she can bring to Northern Oaks in our grooming department. Lori is married with two beautiful girls. She has two dogs, Penny, a silky mix and Kisa, an Applehead Chihuahua.


Office Diva

Daphne has been a member of Northern Oaks Bird & Animal Hospital for approximately 8 years. Her position involves training new employees to adhere to her demands and managing the flow of paperwork. Her daily routine involves breakfast with Kristen. Then its on to reception where she is needed to assist in checking in patients. She then moves on to Amy’s lap for loving. Luckily Amy and Leah are well trained. Leah sometimes needs her assistance in holding down paperwork. Daphne obliges only because she knows she will then rub her head. Her assistance is always needed upstairs. The “manager” needs assistance with her paperwork as well. Daphne has stated that she is not sure the manager could accomplish anything if she weren’t in the middle of her desk through the morning. By mid-day she graces reception with her presence again. The afternoon is spent sunning by the window and watching the birds. If the receptionists are getting out of hand she assists again by sitting on their papers. She is incredibly busy, as you can see. Northern Oaks would likely fall apart without her assistance. There is even a song about her!


Kitten Greeter

Samuel is the most handsome and loved cat in the hospital. He has been with Northern Oaks since he was about five. He is the Official Kitten Greeter of the hospital. He delights in showing the new kids around the treatment area and making them feel safe. Samuel was abandoned and thus he knows how very scary it can be in a new place. He enjoys the company of the team. He has recently expanded his territory to the reception area and upstairs on the manager’s desk. They love it when he knocks their papers off the desk or steals their food. He is given treats on request and loves having his head scratched. He receives the most amazing hair style by Dr. Byrd and has been featured on our website and emails numerous times. When his roaming and kitten greeting have been done for the day, he retires to his perch to watch over the treatment area. He is always willing to eat and will accompany anyone that offers. He is a really nice guy.

Employment Opportunities

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