Meet Kalie Mullen

I earned my undergraduate degree from Angelo State University in 2009 and spent over a decade as a critical care nurse in both adult and pediatric facilities. In 2015, I joined the Pediatric Intensive Care Unit at Cook Children's. I later pursued my master's degree in nursing and became a Pediatric Primary Care Nurse Practitioner, graduating from the University of Texas at Arlington in May 2019. I'm board-certified through the Pediatric Nursing Certification Board and a member of the National Association of Pediatric Nurse Practitioners.

After having children of my own and working in the PICU, I developed a deep passion for the growth and development of children. What I enjoy most about my work is getting to know my patients and their families, building trusting and lasting relationships.

Services

  • Acute illnesses
  • Chronic condition management
  • Developmental problems
  • Disease prevention
  • Flu shots
  • Hearing screens
  • Injury treatment
  • Obesity and weight management
  • Vision screens
  • Patient and parent education
  • School and sports physicals
  • Vaccines and immunizations
  • Well checks

Reviews

Average rating:

4.9
Questions were addressed
5
5 (70)
Provider explained things clearly
4.9
4.9 (71)
Likelihood of recommending this provider
4.9
4.9 (71)
Trust/confidence in physicians
4.9
4.9 (69)

What our families say

  • October 28, 2025

    Kalie is AMAZING! I've been taking my oldest daughter to see her since she was a baby. She truly cares and listens to you, offers advice when needed. I recommend her hands down any day.

  • September 16, 2025

    Overall a great experience. Would highly recommend to anyone.

  • September 16, 2025

    Kalie was awesome, took the time to talk to not just me as the parent but also to my daughter since she's 17 and also had her own concerns and questions. She gave her full attention and concern, answered questions, gave suggestions and just listened. 10/10!!

  • September 07, 2025

    Kalie is absolutely amazing. Love everything about her. My daughter loves her too.

  • August 02, 2025

    The office was very patient and understanding is the fact that I was running late in arriving for my child's appointment. They stayed late to see him, which is very much appreciated.

  • August 02, 2025

    Nurses, front office staff and doctors are always serving with a smile.

  • August 02, 2025

    The office staff is super professional and kind!! Love this office. Always a pleasure to visit!

  • July 31, 2025

    The staff is amazing! We love cooks trophy club! The PA's are always so kind to a first time mom with all the questions!

  • June 19, 2025

    Kalie is phenomenal!!

  • June 19, 2025

    This office is the best!!

  • June 17, 2025

    The appearance of the clinic, the staff, and the atmosphere was very good. My son really enjoyed his visit and he's looking forward to seeing you again.

  • June 12, 2025

    Kalie is THE absolute best! We adore her. She is so incredibly kind everytime we see her. My kids truly care about her and feel like she cares about them as well. She always answers questions in an age appropriate scientific way. We adore her!

  • June 07, 2025

    We love how Kalie always includes our child in the visit. She will ask what questions they have and explain things to them. We have found not many providers over the years do that.

  • May 29, 2025

    We love Kalie, Dr. [...] and their team! Best pediatricians we've found hands down. So grateful for them!

  • May 07, 2025

    In general every experience we have there is excellent.

  • May 07, 2025

    In general, everyone we come into contact to at cooks children trophy club is great. We'd love it.

  • May 04, 2025

    Kalie Mullens, NP and all other office staff from front desk to nurses. Everyone is great!

  • May 04, 2025

    Wait times are almost non-existent, they get you on the schedule same day most of the time, are very responsive to questions or concerns, and have wonderful bedside manner. They are the absolute best at Cook children's trophy club!

  • April 29, 2025

    Always a good experience

  • April 29, 2025

    My kids just love kalie!!

  • April 24, 2025

    Everyone is great!

  • April 04, 2025

    Great by the whole staff

  • March 28, 2025

    The NP Kalie was amazing. Very kind and knowledgeable.

  • March 25, 2025

    Everything was quick but thorough and everyone was so kind. We couldn't ask for better care.

  • March 25, 2025

    We love the trophy club office! Everyone from front desk staff to the doctors and NPs are fantastic. We couldn't ask for better care!

  • March 07, 2025

    Kalie is amazing every single time!

  • March 07, 2025

    Always listening to every symptom and 9 times out of 10 I will walk out with a solution or a plan

  • February 23, 2025

    I sincerely appreciate the newborn entrance! I also noticed the child size toilet in the restroom this visit. These environmental considerations are so kind and very much appreciated. All the providers and staff we have seen have been considerate, attentive and thoughtful in their explanations of our child's care. Thank you!

  • February 07, 2025

    Kalie is such a great PA. [...] loves seeing her, and she's always so positive and kind.

  • January 28, 2025

    Kalie is the best. Since we see Dr. [...] she is a great option when my daughter has female questions she isn't as comfortable asking a male doctor. She makes [...] feel so comfortable. Highly recommend.

  • January 28, 2025

    The whole staff was fast, friendly and genuine. Thank you!

  • January 21, 2025

    The entire staff was excellent!

  • January 21, 2025

    We were early for our appointment. I was prepared to wait. We were taken back right away and left before our appointment time.

  • December 31, 2024

    Everything Is always good

  • December 31, 2024

    Kalie is wonderful! She is patient, efficient, and listens to your (and the child's) concerns.

  • December 29, 2024

    Kalie (Nurse Practitioner) was amazing!

  • December 27, 2024

    Kalie Mullin is exceptional. She is so easy to talk to and so incredibly good with kids. She listens and provides thorough feedback and explanations. We feel so fortunate to have Kalie on our children's care team.

  • December 12, 2024

    Kalie is exceptional at what she does!! We always feel at ease with her. She has such an incredible demeanor, patient care and compassion. Thank you for everything! BEST TEAM

  • December 09, 2024

    Kalie is amazing and so attentive! Even though my daughter is only 4, she made sure to address her first most of the time and asked her if she had any questions about her care, which I love!

Affiliations

  • Cook Children's Physician Network