Photo of Peter S. Hesslein

Peter S. Hesslein, M.D.

Pediatric Cardiologist

Pediatric Cardiology

Accepting New Patients


Professional Statement

Dr. Hesslein specializes in electrophysiology, the study and treatment of heart rate and rhythm disturbances, utilizing the latest techniques and procedures, including three-dimensional mapping and catheter ablation. He also implants pacemaker and defibrillators, when needed, to regulate the heartbeat. He is a member of the American Heart Association, The Pediatric and Congenital Electrophysiology Society, the Royal College of Physicians and Surgeons of Canada, and the Heart Rhythm Society.

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Accepts 1 Insurance Plan

Please contact the practice directly to confirm your health plan is accepted
  • Medicare


Baylor College of Medicine
medical school
Northwestern University, Childrens Memorial Hospital
Texas Childrens Hospital
fellowship, Pediatric Cardiology and Electrophysiology

Board Certifications

American Board of Pediatrics
Pediatric Cardiology
American Board of Pediatrics

Clinical Interests

  • Amyloidosis
  • Anomalies Of Aorta
  • Anomalous Coronary Artery
  • Aortic Bifurcation Syndrome
  • Aortic Coarctation
  • Aortic Valve Disorder
  • Arrhythmia
  • Asymmetric Septal Hypertrophy
  • Atrial Fibrillation
  • Atrial Flutter
  • Atrioventricular Septal Defect
  • Autoimmune Pericarditis
  • Barth Syndrome
  • Beriberi
  • Blue Lips
  • Cardiac Angina
  • Cardiac Genetics
  • Cardiac Insufficiency
  • Cardiac Sarcoma
  • Cardiomegaly
  • Cardiomyopathy
  • Chest Pain
  • Common Aortopulmonary Trunk
  • Common Ventricle
  • Congenital Anomaly Of Aortic Arch
  • Congenital Anomaly Of Coronary Artery
  • Congenital Anomaly Of Great Veins
  • Congenital Atresia Of Pulmonary Valve
  • Congenital Heart Disease
  • Congenital Infundibular Stenosis
  • Congenital Insufficiency Of Aortic Valve
  • Congenital Mitral Valve Regurgitation
  • Congenital Pulmonary Valve Abnormality
  • Congenital Stenosis Of Aortic Valve
  • Congenital Stenosis Of Mitral Valve
  • Congenital Stenosis Of Pulmonary Valve
  • Congenital Subaortic Stenosis
  • Congenital Tricuspid Atresia
  • Congenitally Corrected Transposition Of The Great Arteries
  • Cor Biloculare
  • Cor Triatriatum
  • Coronary Artery Anomaly
  • Coronary Artery Fistula
  • Cyanotic Heart Disease
  • Dextrocardia
  • Double Aortic Arch
  • Double Outlet Right Ventricle
  • Ebstein Anomaly
  • Eisenmenger Syndrome
  • Endocardial Cushion Defect
  • Familial Arrhythmia
  • Family History Heart Disease
  • Fetal Arrhythmia
  • Fetal Cardiomyopathy
  • Fetal Congenital Heart Disease
  • Giant Cell Myocarditis
  • Heart Anomaly
  • Heart Murmur
  • Heart Problems
  • Heart Racing
  • Hemitruncus
  • Hypoplastic Left Heart Syndrome
  • Infiltrative Disorders Of The Heart
  • Interrupted Aortic Arch
  • Kawasaki Syndrome
  • Maternal Valvular Disease
  • Mitral Valve Prolapse
  • Myocarditis
  • Obstructive Anomalies Of Heart
  • Overriding Aorta
  • Palpitations
  • Paroxysmal Supraventricular Tachycardia
  • Paroxysmal Tachycardia
  • Paroxysmal Ventricular Tachycardia
  • Partial Anomalous Pulmonary Venous Connection
  • Patent Ductus Arteriosus
  • Patent Foramen Ovale
  • Pericarditis
  • Peripheral Pulmonary Stenosis
  • Persistent Ostium Primum
  • Pulmonary Arteriovenous Malformation
  • Pulmonary Artery Coarctation And Atresia
  • Rhythm Disorder
  • Right Ventricular Hypertrophy
  • Septal Defect
  • Sick Sinus Syndrome
  • Single Ventricle Defect
  • Subaortic Stenosis
  • Supraventricular Tachycardia
  • Syncope
  • Tachycardia
  • Tetralogy Of Fallot
  • Transposition Of Great Vessels
  • Truncus Arteriosus
  • Truncus Arteriosus Communis
  • Tufted Angioma
  • Vasovagal Syncope
  • Ventricular Fibrillation
  • Ventricular Septal Defects
  • Ventricular Tachycardia
  • Wolff-Parkinson-White Syndrome
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Personal Interests

My wife is a teacher and together we have two grown children and 3 grandchildren. In my free time I enjoy hiking, biking, reading, theater and music.
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Professional Associations

Heart Rhythm Society, Pediatric and Congenital Electrophysiology Society, Royal College of Physicians & Surgeons of Canada
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  • English
  • French
  • Spanish

Practice Locations

Peter S. Hesslein practices at three locations

NorthWest Congenital Heart Care
1229 Madison Street
Swedish Nordstrom Tower
Suite 860

Seattle, WA 98104
NorthWest Congenital Heart Care - Jackson Hall Medical Building
314 Martin Luther King Jr Way
Suite 303

Tacoma, WA 98405
NorthWest Congenital Heart Care
751 Northeast Blakely Drive
Swedish Issaquah Hospital
Suite 5010

Issaquah, WA 98029
Affiliated Facilities
  • Swedish Cherry Hill
  • Swedish Edmonds
  • Swedish First Hill
  • Swedish Issaquah