Meet Our Veterinarians

Myron K. Martin Spay/Neuter & Wellness Clinic


Dr. Derrik Prioleau was born and raised in South Carolina and attended Morehouse College in Atlanta, Georgia. While there he started working at the zoo, veterinary clinics and volunteering at humane societies, which is how he became interested in veterinary medicine. He went on to complete his DVM at Tuskegee University School of Veterinary Medicine in Tuskegee, Alabama. After graduation, he saw the opportunities in Texas and moved to Dallas. He has a knack for caring for all creatures and does not discriminate based on the species of the animal or the problem; if it needs to be fixed, he will do what he can to get it done. Outside of his veterinary career, Dr. Prioleau is an avid musician who can play numerous instruments. He has toured both as a solo artist and in several small bands, in several U.S. cities and in other countries. Dr. Prioleau has a soft spot for popcorn!


Dr. Chrystal Gilmore grew up in rural Ohio and became interested in veterinary medicine at an early age. She started participating in youth veterinary projects through her local 4-H club and the Ohio State University College of Veterinary Medicine. By the age of 14, she started working at the local animal veterinary hospital as a ward nurse and veterinary assistant. Dr. Gilmore received her B.S. in Animal Science from Ohio State University. During her undergraduate studies, she was active in the Ohio State Marching Band (TBDBITL) and continued to work at the vet clinic and at OSU Veterinary Hospital. She received her Masters of Science from Texas A&M in Reproductive Physiology. While at Texas A&M, she worked as an Assistant Lecturer in Animal Science, enjoyed improving her palpation skills and learned Embryo Transfer techniques for cattle and horses. Dr. Gilmore received her doctorate of veterinary medicine from Ohio State University in 2002. While in vet school, she was active on the colic and dystocia teams and worked as an ICU Equine tech. After graduation, she worked in a mixed animal clinic in central Texas. After her twins were born, she and her family moved back to Ohio where she continued to work in a mixed animal clinic. The clinic had a close relationship with the local humane society and this is where Dr. Gilmore developed a passion for shelter medicine. Her career evolved to where she was helping multiple shelters with the surgical load and doing relief work at various veterinary clinics. In August of 2016, Dr. Gilmore and her family moved back to Texas and she was very excited to begin working at the SPCA of Texas. Outside of work, she enjoys staying active with her children, Anna, Wyatt, and Alayna, and being involved in their activities, hiking in nature, and helping out as an AWANA helper. Her family also includes Jessie (Catahoula mix), Brownie (a tortie with an attitude!), Star (her horse), cattle, and chickens.

Bill Driscoll


Dr. Rachel Redd is from a small city in New Mexico, named after an old game show, Truth or Consequences. T or C for short. She grew up on a farm and had all sorts of animls: horses, mules, chickens, dogs, cats, pigs, goats and even some rats. She was very active in the 4-H club and FAA, and then went on to receive her bachelors in Animal Science from New Mexico State University. While at school she worked for a few veterinarians and at a state diagnostic lab in New Mexico. She then went on to Colorado State for vet school. After graduation she worked as a veterinarian for eight years in New Mexico, both in a private practice and shelter medicine. Dr. Redd made her way to Texas in 2018, looking to enjoy life in a bigger city.  Her main area of focus here at the SCPA of Texas is the Wellness Clinic. She enjoys working with people and helping people help their pets.

In her free time, Dr. Redd likes spending time with her dogs, Pudge, Kinsler, Beltre, Joey, Spot and Lucy. And enjoys crafting activities like sewing and DIY. As you can tell from her dogs names, Dr. Redd is a big baseball fan, and is trying to go to a game at every baseball stadium. But one of her proudest accomplishments is that she has ridden in the Oscar Meyer Weiner mobile, not just once but twice! She loves it because it makes everyone smile, and she loves trying to find it across the country.


Dr. Anita Matthes grew up on a farm in Bay City, Texas. Her dad was a grass farmer and took care of a lot different kinds of exotic animals including a camel, wallaby, emu, buffalo, llama, antelope, elk, gaur, goats, mule, horses, miniature horses and sheep. At one point Dr. Matthes’ family had 13 dogs and eight cats, and her dad even rescued a coyote pup, who lived inside the house along with a pig. Even though she grew up surrounded by all types of animals, Dr. Matthes actually wanted to be a dermatologist. She went to Austin College and received her BA in Biology. She then went on to do research at UT Southwestern, where she worked with plastic surgeons. But that’s when she decided to change gears. She applied to business school at SMU and got accepted, but she deferred and actually went to vet school instead. In 2009, she graduated from Oklahoma State with her doctorate. Dr. Matthes worked at a private practice in Dallas for a few years, before getting into relief work. She actually worked at all three SPCA of Texas locations doing relief work with another organization before getting a job here. Her main area of focus at the SPCA of Texas is wellness and preventative medicines. In her free time, Dr. Matthes likes to spend time with her niece and her husband. She also enjoys reading and watching movies. She currently has one dog, a long haired Chihuahua named Axel.

Mary Spencer Spay/Neuter & Wellness Clinic at Village Fair


Dr. Qiana Cobb-Sinnie is from Chicago, Illinois. She originally wanted to be a news anchor and started her college studies at Grambling State University in Louisiana. After her first semester of college, she decided she wanted to be a veterinarian, and changed her major from Mass Communications to Biology Pre-Veterinary Medicine. She finished her college studies at the University of Texas at Arlington, earning her Bachelor of Science in Biology in 1999. Dr. Cobb-Sinnie then attended Tuskegee University School of Veterinary Medicine where she received her Doctor of Veterinary Medicine Degree in 2004.
Dr. Cobb-Sinnie’s past experience includes shelter medicine, high volume spay/neuter surgeries, and high volume vaccine clinics. She was also part of a team to develop a state-of-the-art medical suite in a municipal animal shelter, one of the first of its kind. She enjoys educating clients on how to give their pets the best care possible. In her spare time, she enjoys hanging out with her family, reading, watching old sitcoms, knitting and crocheting. Her family consists of: husband Shawn; three children: Brianna, Ava and Cameron; also a rescue Jack Russell/Dachshund mix named Patches and two guinea pigs named Snowflake and Cream.


Dr. Kimberly Heinefield has known she wanted to be a veterinarian since she was in second grade. The neighborhood she grew up in had a lot of stray cats, and one day she took one of the cats to the vet. This memory stuck with her and she knew being a vet was the path for her. Originally from Austin, Dr. Heinefield made her way to College Station where she did three years of undergrad at Texas A&M. Her family quickly became Aggie fans and to this day they still root for A&M over UT. After three years of undergraduate studies, she had already fulfilled all of the requirements for vet school so she started working on her doctorate and didn’t get a bachelor’s degree. She graduated from Texas A&M College of Veterinary Medicine in 2000. After school, Dr. Heinefield bounced around for 15 years, working for several small private animal practices in the DFW metroplex. She also tried emergency work and overnight shifts, but nothing felt like the right fit until she came to the SPCA of Texas, where her main focus is on spay/neuter surgeries and helping with the South Dallas Initiative. Dr. Heinefield says she enjoys the work she does at the SPCA of Texas because it makes her feel like she’s making a difference.

In her free time, Dr. Heinefield says she would like to work outside in the yard and garden, but what she usually ends up doing at the end of the day is watching TV and eating dinner. She loves outdoor activities and spending time with her two boys, Jackson and Grayson.

Russell H. Perry Animal Care Center


Dr. Bonnie Chiu was born in Chicago and has traveled all over since then. She moved to Boca Raton, Florida as a baby and then moved to Texas when she was five-years-old. She attended Texas A&M University for her undergraduate degree in Biomedical Science, studied abroad for a few weeks in Dusseldorf, Germany and then graduated from Oklahoma State University College of Veterinary Medicine in 2010. Before joining the SPCA of Texas, Dr. Chiu worked in both corporate and private practices. She enjoys performing soft tissue surgeries. Outside of work, Dr. Chiu likes traveling, trying new restaurants, watching movies, karaoke, kickboxing, spending time with her mini-dachshund, Pickles and FaceTiming with her two nephews and one niece.


Dr. Amber Roth grew up in Florida with all kinds of animals including rabbits, a guinea pig, fish, birds, dogs and cats. When she was 13 –years –old, she made her way to Texas and moved to Austin with her family. In 2001, she graduated with a B.S. in Marine Science from Texas A&M Galveston. Following graduation, she was a substitute teacher for Carrollton-Farmers Branch ISD. She then moved to Yuma, Arizona, after accepting a job with the Department of the Interior, Bureau of Reclamation. While in Arizona, she missed having pets of her own and began to volunteer at a small humane society. In 2003, she moved back to Texas (Cedar Park) and became a veterinary technician with the goal of one day going to vet school. In 2005, she was accepted into Texas A&M University's Veterinary program and graduated in 2009. After graduation, she worked in a small animal practice in Frisco for seven years.

Dr. Roth loves medicine cases as well as surgery, but is particularly interested in behavior, internal medicine and dentistry. She and her husband, Geoff, share a crazy senior dog, a white boxer, and a senior diabetic cat along with a new puppy. In her free time she enjoys hanging out with her pets, gardening and making jewelry.




Jan Rees-Jones Animal Care Center


Dr. Shawn Ashley has known she wanted to be a veterinarian since she was nine-years-old. That dream came true in 1988 when she graduated from Texas A&M College of Veterinary Medicine. Since then she has enjoyed many different aspects of her career. She owned Lake Joe Pool Animal Clinic for 15 years, where she treated dogs, cats, birds, reptiles and pet exotic mammals. She then worked at I-20 Animal Medical Center, where she did general practice and emergency medicine. In 2009, Dr. Ashley received her post graduate Master’s degree in Veterinary Microbiology from Texas A&M University. While there, she learned she had a talent for medical journalism. Her career then turned towards companion animal shelter and disaster medicine. She has been with the SPCA of Texas for several years and is currently the Animal Cruelty Investigation and Rescue Center veterinarian. Her interests include infectious disease control, veterinary forensics and crime scene investigation. She is a member of the AVMA, the TVMA Animal Welfare Committee and is the co-chair of the TVMA shelter committee. When not working, Dr. Ashley enjoys hiking, reading, writing and editing. Her family consists of 5 dogs, 5 cats, 2 tortoises, and an Umbrella Cockatoo.






Dr. Joanna Harchut was born and raised in the northwest suburbs of Illinois. She attended the University of Illinois for her undergraduate and veterinary degrees. After vet school, Dr. Harchut moved to Chicago and began working at a small private animal practice. She then worked for a hospital that helped the animal rescue community. Here, she discovered her true passion for helping animals without forever homes. Last year, Dr. Harchut and her husband, Mike, moved to Dallas to start a new chapter and escape the cold winters! She feels truly blessed to be a part of the SPCA of Texas. Every day, she is able to give love and medical care to animals who may have never known a kind human touch. To be a part of each animal’s journey in finding a family is her dream come true. Dr. Harchut enjoys spending her free time with her husband and their two dachshunds, Franklin and Frederick.


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SPCA of Texas Voices

"I'm absolutely in LOVE with Kitty (formerly Kaleigh). I know her name isn't original at all but I just started calling her that until I could think of a name and it just stuck - it's so her! I've attached two photos - she's seriously the most beautiful kitty in the world! She loves to steal tennis balls and bones from her dog sister - she thinks she's a dog! She enjoys going for walks and car rides, snuggling with mom, bird watching, drinking from the sink, playing with her pipe cleaners and getting into mom's makeup in the mornings. I couldn't 'imagine life without her. She's the absolute best!"

Laureen Jankins

Pet Owner