Our Pediatric Providers

Dr. Catherine Phillips

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Catherine Phillips, D.O., FAAP, CLC

Dr. Phillips is a board certified pediatrician and certified lactation counselor, specializing in general pediatric care of infants, children, and teens in Oxford and surrounding areas.

Dr. Phillips is happily married to her husband Brian. They are blessed with two precious kids, Patrick and Margaret, who are proud Bramlett Chargers in the Oxford School District. She enjoys spending time with her children, home decorating, and walking her King Charles Cavalier in her neighborhood. Minnie is often at the clinic with Dr. Phillips and enjoys meeting our patients.

Dr. Phillips is an active member of St. Peter’s Episcopal Church. She follows Women In Pediatrics, a community of like-minded female pediatricians who empower each other to grow, connect, and lead. She spends a lot of time managing the practice and enjoys growing with and giving back to the LOU community.

Dr. Phillips brings over a decade of pediatric experience into the exam room, practicing the most up-to-date, evidence-based medicine of our decade. She combines her experience as a pediatrician and as a mom herself into account, treating each child like she would her own.

Learn More About Dr. Phillips



D. Brooke Underwood, C-PNP, CLC

Brooke is a certified pediatric nurse practitioner and certified lactation counselor. Brooke grew up in North Mississippi and always wanted to practice pediatric primary care. Brooke received her Bachelor of Science in Nursing from the Mississippi University for Women in 2009 and her Master of Science in Nursing from The University of Alabama at Birmingham in 2017.

Learn More About D. Brooke Underwood



Emily Teer.


Emily Teer, FNP-C

Emily started her career in family practice managing a large patient population from infancy to adulthood and a variety of chronic diseases, including hypertension and diabetes. Her favorite patients were always the little ones and teens! This led her to Phillips Pediatrics where she works alongside Dr. Phillips helping manage our medically complex patients. Emily specializes in pediatric mental health and adolescent medicine. She enjoys serving your families!

Learn More About Emily Teer


Our Nurses

kara bubblebee

Kara Barbee, LPN

I am a full time wife, mom and nurse, my three favorite things! Pediatrics has always been a passion of mine so when the opportunity to work at Phillips Pediatrics came up, I knew God was opening an amazing door in my life.  I started working at Phillips Pediatrics in January 2021, and every day since has been so rewarding.  Making your child’s appointment special, watching them grow, and helping put a smile on their face is one of the many things I look forward to daily. Nurse Kara has over a decade of experience in the medical field, is an experienced pediatric LPN, and serves as lead clinic nurse, referral specialist, and phone nurse.


Sierra Ashe.

Sierra Ashe, BSN-RN, CLC

I graduated nursing school in 2022, and started my nursing career in the neonatal intensive care unit in Tupelo. I started part-time at Phillips in August of 2023, but quickly grew to love the team and all of the kiddos! I moved here full-time in March of 2024! I am now a Certified Lactation Counselor and in school for my Pediatric Nurse Practitioner degree. I am a wife and a momma of a precious little boy. My passions are advocating for breastfeeding and taking care of children! I can’t wait to watch your little one’s grow! Nurse Sierra specializes in neonatal and breastfeeding medicine. She is a full time clinic nurse, certified lactation counselor, and patient educator.


Holly M Pennington, RN, ISR Instructor, AC-Aquatics

I’m a wife and mother to 3 kids. I have worked in the pediatric medical field since 2002. The majority of my professional career was spent in the Neonatal Intensive Care Unit. My son has Autism which has led me in many different directions meeting wonderful people on our journey. I’ve worked closely with Dr. Phillips and Brooke Underwood to manage his complex care and joined the Phillips Pediatrics family as a nurse in the fall of 2023. I’m also a certified Infant Swim Resource instructor. Nurse Holly is a part-time clinic nurse at Phillips Pediatrics.


Claire Jones, LPN & Hannah Thompson, LPN

These two women are both moms and pediatric nurses. They helped Dr. Phillips open the doors of Phillips Pediatrics in 2020. They worked incredibly hard during the COVID-19 Pandemic ensuring accessible and exceptional care. We are forever grateful for all of their help. They will always be part of the Phillips Pediatrics Family.



Our Mental Health Team

Joy McCalla, LCSW

Pediatric Counselor

Our pediatrician, Dr. Phillips, and our counselor, Joy McCalla, work together to coordinate mental health care for our patients. Joy’s services are provided via Telehealth.

Dr. Phillips has a passion to care for the whole child. She furthered her mental healthcare training through the REACH Institute to provide up-to-date, evidence-based mental healthcare in pediatric primary care. She works closely with local and regional psychologists, psychiatrists, counselors, and developmental and autism centers when referrals are needed.

Joy McCalla is a Licensed Clinical Social Worker who brings years of counseling experience to our team. She specializes in individual and family therapy. She also provides parenting sessions for behavior problems in children under the age of 7. Joy not only works closely with families to improve relationships but also with schools when your child needs an advocate for IEP services. This comprehensive counseling approach helps improve the emotional, educational, and psycho-social well being of our patients and their families

More About Our Mental Health Services