Cathryn A. McWilliams, MD, FAAP
General Pediatrics
Accepting new patients
Sees newborns through age 18
PennCare for Kids Limerick
View 1 additional location
Make an appointmentCall 610-495-2310
Penn Medicine Provider

About me

Education and training

  • Medical School: Temple University School of Medicine
  • Residency: Walter Reed Military Medical Center

What my patients think about me

Average Rating

425 reviews

Comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Penn Medicine.

December 2025
dr. mcwilliams was patient and thorough
December 2025
she's open, honest, and great.
November 2025
love dr mcwilliams! very thorough! addressed all concerns. conversed with my son and made him feel comfortable.
November 2025
great visit great doctor

Insurance accepted

My Locations

Penn Medicine hospital privileges

  • Hospital of the University of Pennsylvania: On the medical staff, but does not have privileges to treat patients in the hospital.
Dr. McWilliams is a Penn Medicine physician.

Qualifications and experience

Treatments and Conditions