Mary C. Niu
( out of 13 reviews )

Mary C. Niu, MD

Languages spoken: English

Mary C, Niu, M.D., is a member of the Division of Pediatric Cardiology at the University of Utah School of Medicine and Primary Children´s Hospital. Her subspecialty is in pediatric cardiology and electrophysiology. She sees patients with all forms of congenital heart disease from infancy through late adolescence, with a focus on heart rhythm disorders. She performs intracardiac ablations of abnormal heart rhythms and implants cardiac rhythm intervention devices such as pacemakers and automatic internal cardioverter defibrillators (AICD).

Specialties

Board Certification

American Board of Pediatrics (Sub: Pediatric Cardiology)
American Board of Pediatrics (Pediatrics)

Patient Rating

4.9 /5
( out of 13 reviews )

The patient rating score is an average of all responses on our patient experience survey. The rating averages scores for all questions about care from our providers. The scale on which responses are measured is 1 to 5 with 5 being the best score.

Mary C, Niu, M.D., is a member of the Division of Pediatric Cardiology at the University of Utah School of Medicine and Primary Children´s Hospital. Her subspecialty is in pediatric cardiology and electrophysiology. She sees patients with all forms of congenital heart disease from infancy through late adolescence, with a focus on heart rhythm disorders. She performs intracardiac ablations of abnormal heart rhythms and implants cardiac rhythm intervention devices such as pacemakers and automatic internal cardioverter defibrillators (AICD).

Board Certification and Academic Information

Academic Departments Pediatrics -Professor (Clinical)
Academic Divisions Cardiology
Board Certification
American Board of Pediatrics (Sub: Pediatric Cardiology)
American Board of Pediatrics (Pediatrics)

Education history

Undergraduate International Relations - Stanford University B.A.
Professional Medical Medicine - Emory University School of Medicine M.D.
Residency General Pediatrics - Johns Hopkins Children's Hospital Resident
Fellowship Pediatric Cardiology - Baylor College of Medicine / Texas Children¿s Hospital Fellow
Fellowship Pediatric Electrophysiology - Baylor College of Medicine / Texas Children¿s Hospital Advanced Fellow
Graduate Training Clinical Investigation - University of Utah M.S.C.I

Selected Publications

Journal Article

  1. Amula V, Radman M, Loomba RS, Kwiatkowski DM, Beshish A, Flores S, Bakar AM, Capone CA, Suguna Narasimhulu S, Pizzuto MF, Karki KB, Cashen K, Niu MC, Mastropietro CW, and the Collaborative Research from the Pediatric Cardiac Intensive Care Society (CoRe-PCICS) Investigators (2026). Electrocardiographic Changes at Presentation and Over Time in Children with Anomalous Left Coronary Artery from the Pulmonary Artery: A Multicenter Analysis. Pediatric cardiology, 47(3), 1270-1278.
  2. Newlon CA, Niu MC, Binka E, Boucek DM, Ou Z, Etheridge SP, Pilcher TA, Martin MH, Gray RG, Asaki S (2026). Children are Less Likely Than Adults to Develop Complete Heart Block Following TAVR. Pediatric cardiology, 47(3), 1169-1177.
  3. Headrick A*, Ou Z, Asaki SY, Etheridge SP, Hammond B, Gakenheimer-Smith L*, Pilcher T, Niu (2024). Intracardiac echocardiography in paediatric and congenital cardiac ablation shortens procedure duration and improves success without complications. Europace, 26(2),
  4. Marrone TN, Amula V, Niu MC, Ou Z, Griffiths E (2024). ECG Abnormalities, Diastolic Blood Pressure, and Adverse Events After Systemic to Pulmonary Artery Shunt in Infants with Congenital Heart Disease. Pediatric cardiology,
  5. Barfuss SB*, Samayoa JC*, Etheridge SP, Pilcher TA, Asaki SY, Ou Z, Boucek DM, Martin MH, Gray RG, Niu M (2023). Ventricular arrhythmias following balloon-expandable transcatheter pulmonary valve replacement in the native right ventricular outflow tract. Catheterization and cardiovascular interventions,
  6. Culleton S*, Niu M, Alexander M, McNally JS, Yuan C, Parker D, Baradaran (2023). Extracranial carotid artery atherosclerotic plaque and APOE polymorphisms: a systematic review and meta-analysis. Frontiers in cardiovascular medicine, 10, 1155916.
  7. Gakenheimer-Smith L*, Ou Z, Kuang J, Moore JP, Burrows A, Kovach J, Dechert B, Beach CM, Ayers M, Tan RB, Mostafavifar M, Mah DY, Conner TM, Turpin S, Avasarala K, Shah MJ, Webster G, Posey J, Etheridge SP, Binka E, Niu M, Asaki SY, Lambert LM, Pilcher T (2023). Multicenter retrospective evaluation of magnetic resonance imaging in pediatric and congenital heart disease patients with cardiac implantable electronic devices. Heart rhythm, 20(12), 1752-1758.
  8. Newlon C*, Asaki SY, Pilcher TA, Ou Z, Etheridge SP, Niu M (2022). The high-density grid catheter: A safe adjunctive tool in pediatric and complex congenital heart disease patients. Journal of cardiovascular electrophysiology, 33(11), 2344-2350.
  9. Cain N, Saul JP, Gongwer R, Trachtenberg F, Czosek RJ, Kim JJ, Kaltman JR, LaPage MJ, Janson CM, Singh AK, Hill AC, Landstrom AP, Thacker D, Niu MC, DeWitt ES, Bulic A, Silver ES, Whitehill RD, Decker J, Newburger JW (2022). Relation of Norwood Shunt Type and Frequency of Arrhythmias at 6 Years (from the Single Ventricle Reconstruction Trial). The American journal of cardiology, 169, 107-112.
  10. El Assaad I, Hammond BH, Aziz PF, Niu, MC and Participating Members of the Pediatric and Congenital Electrophysiology Society (2022). Anticoagulation management and risk of thromboembolism in healthy youth with atrial fibrillation: Data from a multi-institutional PACES collaborative registry. Heart rhythm, 19(11), 1916-1917.
  11. Writing Committee Members, Silka MJ, Shah MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Corcia MCG, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubu¿ P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Bergen NHV, Wackel P (2022). 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Executive Summary. Annals of pediatric cardiology, 15(3), 323-346.
  12. El Assaad I, Hammond BH, Kost LD, Worley S, Janson CM, Sherwin ED, Stephenson EA, Johnsrude CL, Niu M, Shetty I, Lawrence D, McCanta AC, Balaji S, Sanatani S, Fish F, Webster G, Aziz P (2021). Management and outcomes of atrial fibrillation in 241 healthy children and young adults: Revisiting "lone" atrial fibrillation-A multi-institutional PACES collaborative study. Heart rhythm, 18(11), 1815-1822.
  13. Silka MJ, Shah MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannakeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubu¿ P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Von Bergen NH, Wackel PL, Document Reviewers: Philip M. Chang, Fabrizio Drago, Anne M. Dubin, Susan P. Etheridge, Apichai Kongpatanayothin, Jose Manuel Moltedo, Ashish A. Nabar and George F. Van Hare (2021). 2021 PACES expert consensus statement on the indications and management of cardiovascular implantable electronic devices in pediatric patients: executive summary. Cardiology in the young, 31(11), 1717-1737.
  14. Writing Committee Members., Shah MJ, Silka MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubu¿ P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Bergen NHV, Wackel P (2021). 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients. Heart rhythm, 18(11), 1888-1924.
  15. Writing Committee Members., Silka MJ, Shah MJ, Avari Silva JN, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubu¿ P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Von Bergen NH, Wackel PL, Document Reviewers (2021). 2021 PACES expert consensus statement on the indications and management of cardiovascular implantable electronic devices in pediatric patients: Executive summary. Indian pacing and electrophysiology journal, 21(6), 349-366.
  16. Writing Committee Members., Shah MJ, Silka MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubu¿ P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Bergen NHV, Wackel P (2021). 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Developed in collaboration with and endorsed by the Heart Rhythm Society (HRS), the American College of Cardiology (ACC), the American Heart Association (AHA), and the Association for European Paediatric and Congenital Cardiology (AEPC) Endorsed by the Asia Pacific Heart Rhythm Society (APHRS), the Indian Heart Rhythm Society (IHRS), and the Latin American Heart Rhythm Society (LAHRS). JACC. Clinical electrophysiology, 7(11), 1437-1472.
  17. Shah MJ, Silka MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubu¿ P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Von Bergen NH, Wackel PL, Document Reviewers: Philip M. Chang, Fabrizio Drago, Anne M. Dubin, Susan P. Etheridge, Apichai Kongpatanayothin, Jose Manuel Moltedo, Ashish A. Nabar and George F. Van Hare (2021). 2021 PACES expert consensus statement on the indications and management of cardiovascular implantable electronic devices in pediatric patients. Cardiology in the young, 31(11), 1738-1769.
  18. Writing Committee Members., Silka MJ, Shah MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubu¿ P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Von Bergen NH, Wackel P (2021). 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Executive Summary. Heart rhythm, 18(11), 1925-1950.
  19. Writing Committee Members., Shah MJ, Silka MJ, Avari Silva JN, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubu¿ P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Von Bergen NH, Wackel PL, Document Reviewers (2021). 2021 PACES expert consensus statement on the indications and management of cardiovascular implantable electronic devices in pediatric patients. Indian pacing and electrophysiology journal, 21(6), 367-393.
  20. Pruitt CR*, Menon S, Lal AK, Eckhauser AW, Ou Z, Presson A, Miller T, Niu (2021). Usefulness of Left Ventricular Myocardial Deformation in Children Hospitalized for Acute Myocarditis who Develop Arrhythmias. The American journal of cardiology, 152, 113-119.
  21. Gakenheimer-Smith L*, Etheridge SP, Niu MC, Ou Z, Presson AP, Whitaker P, Su J, Puchalski MD, Asaki SY, Pilcher (2020). MRI in pediatric and congenital heart disease patients with CIEDs and epicardial or abandoned leads. Pacing and clinical electrophysiology, 43(8), 797-804.
  22. Howard TS*, Niu MC, Morris SA, Valdes SO, Follansbee CW, Pignatelli RH, Miyake CY, Wang Y, Kim J (2020). Right Ventricular Pacing After Ventricular Septal Defect Closure Is Associated With Development of Cardiac Dysfunction. JACC. Clinical electrophysiology, 6(3), 348-350.
  23. Mir A, Niu M, Yamada M*, Overholt (2017). Hypoplastic left heart syndrome with coronary-cameral fistulas: Echocardiographic demonstration of coronary artery steal and successful interventional treatment. Annals of pediatric cardiology, 10(3), 306-309.

Review

  1. Niu MC, Spentzou G, Newlon C (2025). Arrhythmias in Congenital Heart Disease: Heterotaxy Syndrome. Cardiac electrophysiology clinics, 17(4), 591-603.
  2. Ebrahim MA, Pham TD, Niu MC, Etheridge SP, Tristani-Firouzi M, Miyake C (2024). Pediatric and Familial Genetic Arrhythmia Syndromes: Evaluation of Bidirectional Ventricular Tachycardia-Differential Diagnosis. Cardiac electrophysiology clinics, 16(2), 203-210.
  3. Niu MC, Etheridge SP, Tristani-Firouzi M, Miyake C (2024). Pediatric and Familial Genetic Arrhythmia Syndromes-Evaluation of Prolonged QTc-Differential Diagnosis and what You Need to Know. Cardiac electrophysiology clinics, 16(2), 195-202.
  4. Etheridge SP, Gakenheimer-Smith L*, Asaki SY, Niu (2023). Asymptomatic Wolff-Parkinson-White Syndrome: An Ounce of Prevention Is Worth the Risk of Cure. Current cardiology reports, 25(6), 543-551.
  5. Etheridge SP, Niu M (2021). Calmodulinopathies: throwing back the veil on the newest life-threatening genetic arrhythmia syndrome. Current opinion in cardiology, 36(1), 61-66.

Case Report

  1. Taliercio V, Wilcox A, Cole S, Daboub JF, Morales Moreno JE, Andrews KG, Asaki SY, Pilcher TA, Tristani-Firouzi M, Niu MC, Viskochil D, Hammond (2026). Resolution of Refractory Multifocal Atrial Tachycardia in Costello Syndrome Using Trametinib: A Case Supporting MEK Inhibitors as Targeted, Specific Antiarrhythmic. American journal of medical genetics. Part A,
  2. Ebrahim MA, Pham TD, Niu MC, Etheridge SP, Tristani-Firouzi M, Miyake C (2026). Pediatric and Familial Genetic Arrhythmia Syndromes: Evaluation of Bidirectional Ventricular Tachycardia-Differential Diagnosis. Heart failure clinics, 22(1), 89-96.
  3. Headrick A*, Newlon C*, Etheridge SP, Asaki SY, Pilcher T, Niu (2024). Duodromic tachycardia: A case report of a rare presentation of wide complex supraventricular tachycardia. HeartRhythm case reports,
  4. Cason RK*, Ponniah UP, Makil ES, Niu M (2020). Atypical recurrent Kawasaki disease with retropharyngeal involvement: A case study and literature review. Annals of pediatric cardiology, 13(3), 244-247.

Editorial

  1. Niu MC, Pilcher TA, Etheridge S (2024). Before it is too late: pre-emptive ablation strategies in tetralogy of Fallot. Europace, 26(3),
  2. Etheridge SP, Niu M (2021). Electrophysiologic Consequences and Sudden Death in Myotonic Dystrophy: Beyond the ECG and Toward Precision Medicine. JACC. Clinical electrophysiology, 7(8), 1049-1051.
  3. Niu MC, Etheridge S (2019). ECG screening in the United States: Are we there yet?. Heart rhythm,