Matthew Williams, M.D.


3020 Children's Way
MC 5004
San Diego, CA 92123




Rady Children's Specialists of San Diego

Medical Group / IPA

Rady Children's Specialists

Medical School

University of Colorado School of Medicine


UC San Diego


Childrens Hospital of Boston, UC San Diego

Board Certifications

Pediatric Cardiology, Pediatrics




Dr. Matthew Williams is the director of cardiac pacing at Rady Children's Hospital-San Diego and a clinical assistant professor at UC San Diego School of Medicine.

Dr. Williams earned his Bachelor of Science in neuroscience at Brigham Young University and his medical degree at the University of Colorado School of Medicine. After completing a residency in pediatrics and a fellowship in pediatric cardiology at Rady Children's / UC San Diego, he completed a fellowship in pediatric and congenital electrophysiology at Boston Children's Hospital / Harvard Medical School.

Dr. Williams has clinical and research interests related to the diagnosis and management of cardiac rhythm disturbances from fetal to adult life, including non-invasive and invasive monitoring and diagnostic techniques, antiarrhythmic medications, catheter-based therapies for arrhythmias, heritable arrhythmia syndromes, rhythm disturbances associated with congenital heart disease and pacemaker and ICD implantation and programming.

He is actively involved in mentoring and teaching medical students, residents and fellows in pediatric cardiology, including basic principles of rhythm diagnosis and ECG reading.

Outside of medicine, Dr. Williams enjoys spending time with his family, good books, music, hiking, skiing and the beach.


The Electrocardiogram Is A Poor Diagnostic Tool To Detect Left Ventricular Hypertrophy in Children: A Comparison With Echocardiographic Assessment of Left Ventricular Mass
Bratincsak A, Williams MR, Kimata C, Perry JC

Long-Term Follow-Up Shows Excellent Transmural Atrial Lead Performance In Patients With Complex Congenital Heart Disease
Williams MR, Shepard SM, Boramanand NK, Lamberti JJ, Perry JC

Longitudinal Lipid Screening And Use Of Lipid-Lowering Medications In Pediatric Type 1 Diabetes
Maahs DM, Wadwa RP, McFann K, Nadeau K, Williams MR, Eckel RH, Klingensmith GJ