Meet Our Team

Dr. James Greenwell graduated from the Texas A&M College of Veterinary Medicine in 1987. He’s known for saying he wanted to be a veterinarian since the age of three—and that passion has never wavered. While earning his doctorate, he also had the unique opportunity to conduct research on dolphins and whales, further deepening his love for animal care.

After graduating, Dr. Greenwell worked for three years under the guidance of a trusted mentor, saving diligently with the dream of opening his own hospital. That dream became a reality in July 1991, when he opened his first veterinary practice. It was during this time that he met his lovely wife, Elizabeth, and they were married in 1994. In July 2010, Dr. Greenwell founded Russell Creek Pet Clinic & Hospital, where many long-time clients followed him, and new relationships with families and their pets began to flourish.

Outside of the clinic, Dr. Greenwell enjoys spending time with Elizabeth and their three children—Jamie, Jackie, and Johnathan. He takes great pride in the family they’ve raised. Their children, inspired by their parents’ dedication and values, have gone on to pursue advanced degrees, including medical school and master’s programs, with the goal of making their own impact in the human medical field.

Dr. Greenwell’s influence extends far beyond his own family. Over the years, he has inspired and mentored numerous employees, many of whom have gone on to attend veterinary school or pursue other remarkable careers. His commitment to lifelong learning keeps him at the forefront of veterinary medicine—especially when it comes to adopting new technologies. He performs all the hospital’s laser surgeries, which are used to reduce inflammation and promote healing, and he is constantly exploring the best and most innovative ways to care for his patients.

With more than three decades of experience, a deep love for animals, and a passion for teaching and mentoring, Dr. James Greenwell continues to lead Russell Creek Pet Clinic & Hospital with heart, wisdom, and an unwavering commitment to excellence in veterinary care.

Kelly Castles has been a valued member of the Russell Creek Pet Clinic team since 2015. Her career in veterinary medicine began in 2010 as a kennel attendant, and her dedication and skill quickly advanced her into assistant and technician roles. Over the years, Kelly gained experience at multiple animal hospitals across the U.S., adapting to each new environment while deepening her expertise in patient care and hospital operations.

After studying at Texas State University and serving as both a technician and hospital manager near Wimberley, Texas, Kelly returned to the DFW area and joined Dr. Greenwell’s team. Within six months, her leadership and commitment to excellence earned her the position of hospital manager.

Kelly has had a deep love for animals since childhood and originally planned to attend veterinary school. However, after her mother became ill in 2015, she chose to shift her path to prioritize family—while remaining in a field she is truly passionate about. Her compassion, experience, and dedication continue to make a meaningful impact at Russell Creek Pet Clinic every day.

In her personal life, Kelly married her husband Graham in 2023. Together, they share their home with two beloved dogs: Dixie, a sweet senior Lab mix, and Booker, an energetic two-year-old Golden Retriever. As they work toward starting their own human family, Kelly and Graham both share a strong commitment to personal and professional growth, always striving to uplift those around them. Kelly is especially passionate about improving the lives of her team and ensuring every pet that walks through the doors of Russell Creek receives the highest standard of care.

Peyton has been a dedicated veterinary technician for over eight years, with the past six proudly spent as part of the Russell Creek Pet Clinic team. Several years into her tenure, Peyton was promoted to Lead Veterinary Technician, a role that reflects her expertise, leadership, and unwavering commitment to both patient care and team support.

Her passion for animals has been a lifelong calling, and she feels incredibly grateful to have turned that love into a fulfilling career. Peyton is not only committed to providing exceptional care for pets but also to educating clients—helping them better understand and support their furry family members.

Her journey in veterinary medicine has been shaped and strengthened by the unwavering support of her family, who have encouraged her every step of the way. At home, Peyton is surrounded by a lively and loving group of animals. She shares her life with 10 pets, including three Australian Shepherds—Levi, Vortex, and Kai; a Great Pyrenees named Trigger; a Great Dane mix named Willow; two Chihuahuas, Lexi and Skylar; two cats, Atlas and Maribel; and a precious prairie dog named Timon.

Outside of work, Peyton cherishes spending time with her husband, Mikie, and their two children, Sawyer and Wrenleigh. Watching her children grow into their unique selves has been one of the greatest joys of her life. Motherhood holds special meaning for Peyton, as she overcame one of her biggest life challenges—being diagnosed with Hodgkin’s Lymphoma at the age of 18. She considers becoming a mother her greatest accomplishment and credits her strength and resilience to the love and support of her family, both two- and four-legged.

Darien has been a valued member of the Russell Creek Pet Clinic team since July 2023. Before joining the clinic, Darien worked in the fast-food industry but always knew that a career involving animals was the ultimate goal. Now pursuing a Veterinary Technician Certificate, Darien is committed to growing within the veterinary field and turning that lifelong passion into a meaningful career.

At home, Darien shares life with a small but lively animal family: Ivy, a beloved Chihuahua; Whiskey, a playful Hound mix; Finn, a cheerful Cockatiel; and Tango, a curious Leopard Gecko.

Outside of work, Darien enjoys spending time in nature, attending social events with friends, and making time for self-care. Known among team members for being easygoing, kind, and gentle, Darien consistently brings a strong work ethic and a calm, compassionate presence to the clinic. His dedication to patient care and eagerness to learn continue to make him a valued part of the Russell Creek family.

Hannah has been a dedicated member of the Russell Creek Pet Clinic team since 2022. She began her journey as a receptionist and, through hard work and a passion for animal care, transitioned into the role of Veterinary Technician in 2024. With a deep love for animals and a strong commitment to their well-being, Hannah is driven by a desire to make a meaningful difference in the lives of both pets and their owners.

Outside of the clinic, Hannah enjoys staying active and spending quality time with her pets. Her favorite pastimes include walking, visiting dog parks, discovering unique coffee shops, and indulging in a little “shopping therapy.” She is a proud pet parent to a lively and lovable furry family: three cats—Chai, Espresso, and Penelope—and three dogs—Moose, Kipper, and Caesar.

Hannah’s long-term goal is to attend veterinary school and become a veterinarian. In the meantime, she continues to be a valuable member of the Russell Creek team, known for her approachable nature, dedication to client education, and passion for helping every animal receive the best care possible.

Katherine “Katie” is a proud member of Texas A&M’s Class of 2025, graduating with a Bachelor of Science in Animal Science — WHOOP! She first joined Russell Creek in 2020 during her senior year of high school and has remained a dedicated part of the team ever since, working seasonally throughout her time at A&M. After graduation, Katie returned full-time as our Technician Assistant and Kennel Supervisor, where she brings her passion for animal care, leadership, and teamwork to ensure every pet lives its happiest, healthiest life.

Outside of work, Katie enjoys cheering on Aggie football, going on nature walks, diving into a good book, and (she admits) spending a little too much time on Pinterest. At home, she shares her life with Yoshi, her spoiled grey tabby who loves the outdoors almost as much as he loves new toys and treats.

Katie is known for her can-do attitude and relentless work ethic. “I don’t know” isn’t in her vocabulary—only “yes” and “I’ll find out.” She’s always eager to learn and grow, and over the years has truly embraced Russell Creek’s core values. Katie consistently goes above and beyond for patients, clients, and her fellow teammates, making her a trusted and irreplaceable part of our clinic family.

Jackie Greenwell-Strunk has been part of the Russell Creek Pet Clinic team since high school, where she first began working as a kennel technician during school breaks. Her passion for healthcare and animal care has remained constant throughout her academic and professional journey. Jackie holds a bachelor’s degree in health sciences and religious studies and later earned a master’s degree in Education. She spent three years teaching high school biology and anatomy before deciding to pursue a career in physical therapy. Jackie is Dr. Greenwell’s middle child and has truly been a part of the hospital since the beginning. She was lucky to grow up spending time at the clinic and working alongside her father, whom she dearly looks up to.

In August 2024, Jackie returned to Russell Creek Pet Clinic full time, bringing with her a deep love for animals and a strong background in science and education. She will begin her Doctor of Physical Therapy studies at the University of Saint Augustine in the fall of 2025. Jackie shares her home with two lively and lovable cats, Meeko and Cheez-it, who keep her entertained with their sweet and silly personalities.

Torie has been passionate about animal care since the age of 17, when she began working in kennels. For the past five years, she has been a dedicated and valued member of the Russell Creek Pet Clinic team. Her calm, caring nature helps animals feel safe, comfortable, and loved during their time at the clinic.

Torie shares her home with her husband, John, and their beloved pets: four cats—Spice, Journey, Twix, and Fable—and a snuggly Shih Tzu named Mia. Outside of work, she enjoys spending quality time with her husband, watching anime, reading manga, and playing video games.

Homeschooled and a proud GED graduate, Torie brings a grounded, compassionate, and laid-back approach to every animal in her care. Her genuine love for animals and gentle demeanor makes her a trusted and comforting presence for both pets and their owners.

Jake is a dedicated animal care professional with a lifelong passion for working with animals. Originally from Little Elm, TX, he graduated from Little Elm High School and has always had a natural connection with pets of all kinds. He began his career in veterinary care as a kennel technician at Breezeway Veterinary in Frisco, TX, where he gained valuable hands-on experience and developed a strong commitment to animal health and well-being.

Jake joined the team at Russell Creek Pet Clinic in May of 2025, where he continues to provide compassionate, attentive care to every animal he meets. Known for his calm demeanor and gentle approach, Jake has a special way of helping pets feel safe, comfortable, and cared for.

Outside of work, Jake enjoys life with his two beloved dogs—Gigi, a spirited Chihuahua, and Bud, a lovable mix. He’s also passionate about gaming, paintball, art, and music. One of his greatest joys is spending time with his nieces, Luna and Willow, as well as his close-knit family and friends. He also feels fortunate to work alongside his mother, Lisa, who is one of the friendly faces at the front desk as a receptionist at Russell Creek.

Jake is proud to be part of the Russell Creek team and looks forward to continuing to support both pets and their people with kindness, compassion, and dedication.

Groomer

Bio coming soon!

Alexandra is a dedicated and compassionate professional with over three years of experience in the office industry and a newly discovered passion for veterinary care. Originally from Colorado, where she was born and raised, Alexandra made the exciting move to Texas in 2025. Shortly after relocating, she joined the team at Russell Creek, where she has quickly become a valued member.

Driven by a lifelong love for animals, Alexandra has found deep purpose and fulfillment in her transition to the veterinary field. Her warm demeanor, strong work ethic, and commitment to care make her a natural fit in this new chapter of her career.

At home, Alexandra shares her life with her husband of five years and their three cherished cats—Jax, Luka, and Frankie. She enjoys traveling, especially to Las Vegas—a favorite getaway they visit twice a year—and has a special fondness for butterflies. Alexandra began her academic journey at Arapahoe Community College and plans to continue her education at Collin College as she grows in the veterinary field. With a strong sense of family, a love for learning, and a passion for animals, she brings warmth and heart to all she does.