M. Joan Costello, CPNP-PC

Bethany Ishmael

Started with Practice:

  • May 2019


  • Vanderbilt University – Bachelor of Science in Nursing


  • St. Louis University – Master of Science in Cardiovascular Nursing

Post Masters:

  • St. Louis University – Pediatric Nurse Practitioner

Memberships / Honoria:

  • Alpha Lambda Delta
  • Sigma Theta Tau

Brief Bio:

Joan is a board certified pediatric nurse practitioner specializing in Primary Care. She brings over 40 years of experience in the pediatric field as both a nurse and nurse practitioner. Her experience ranges from Pediatric Intensive Care Unit and Emergency Department to Primary Care. Joan has devoted her entire career to the care of children and their families. She is a strong proponent of family centered care and believes firmly in the philosophy, “if you dream it, you can do it” (Walt Disney)! She wants to encourage every child to dream and reach for their fullest potential as happy, confident, resilient, caring, productive members of their families and societies.

Contact Us

If you have a medical question, interested in your child's lab results, or need a copy of your child's vaccines use our secure and confidential Patient Portal. If you are not registered for an account please call our staff at 972-932-1319 and give them your current email address so that we may extend an invitation to you.

With a Follow My Health Portal Account you can also manage your health information and communicate with your provider in a secure, online environment. Please visit the Patient Portal button at the top of the screen for more details.

Our Location 

Office Hours
Monday - Friday 7:30 AM - 4:30 PM
Saturday & Sunday Closed (see below)
After Hours
Children's Medical Clinics's has an on call provider for your after hours needs.
Monday - Friday 5:00 PM - 8:00 PM
Saturday & Sunday 9:00 AM - 12:00 PM