Matthew Alan Hornick, MD
Assistant Professor of Surgery (Pediatrics)Cards
About
Titles
Assistant Professor of Surgery (Pediatrics)
Biography
Matthew Hornick, MD is a pediatric surgeon who treats a broad array of conditions in patients ranging in age from newborns to young adults. He feels very fortunate to have the opportunity to treat surgical problems in children, and as a father of two boys, understands that there is nothing more important to parents than their kids’ health and well-being. His primary goal is to provide his patients with the same level of care that he would want and expect for his own children.
Dr. Hornick earned his medical degree at Yale and completed his General Surgery training at the Hospital of the University of Pennsylvania. As a research fellow at the Children’s Hospital of Philadelphia, he contributed to the development of an “artificial placenta” model to support extremely premature babies. Following residency, he completed clinical fellowship in Pediatric Surgery at Children’s Hospital of Philadelphia.
Appointments
Pediatric Surgery
Assistant ProfessorPrimary
Other Departments & Organizations
- General Pediatric & Thoracic Surgery
- Pediatric Surgery
- Pediatric Surgery
- Surgery
- Yale Medicine
Education & Training
- Fellowship
- Children's Hospital of Philadelphia (2020)
- Residency
- Hospital of the University of Pennsylvania (2018)
- MD
- Yale School of Medicine
Research
Publications
2025
Preferences for Inguinal Hernia Repair in Infants: A Survey of the Eastern Pediatric Surgery Network
Hellmann Z, Knod J, Kulaylat A, Griggs C, DeFazio J, Scholz S, Alemayehu H, Robinson J, Kunisaki S, Hornick M, Collaborators E, Allukian M, Chandler N, Feng C, Finck C, Gander J, Lipskar A, McLean S, Middlesworth W, Nandivada P, Rangel S, Robertson J, Russell R, Slidell M, Taylor J, Tracy E. Preferences for Inguinal Hernia Repair in Infants: A Survey of the Eastern Pediatric Surgery Network. Journal Of Surgical Research 2025, 306: 188-196. PMID: 39793305, DOI: 10.1016/j.jss.2024.12.012.Peer-Reviewed Original ResearchConceptsLaparoscopic inguinal hernia repairInguinal hernia repairPediatric surgeonsHernia repairCompare long-term outcomesStandard open techniqueLong-term outcomesLate-career surgeonsSurgical practice patternsEarly-career surgeonsMid-career surgeonsSurveyed pediatric surgeonsChi-square testLaparoscopic approachOpen techniqueSurgeon preferenceContralateral sidePatient populationInfantsPractice patternsTechnical easeSurgeonsT-testRepairHernia
2024
Unplanned Readmission Rate Before Interval Appendectomy After Nonoperative Management of Complicated Appendicitis.
Hellmann Z, Rehman S, Hornick M, Solomon D. Unplanned Readmission Rate Before Interval Appendectomy After Nonoperative Management of Complicated Appendicitis. Journal Of The American College Of Surgeons 2024 PMID: 39655815, DOI: 10.1097/xcs.0000000000001255.Peer-Reviewed Original ResearchNonoperative management of complicated appendicitisManagement of complicated appendicitisPediatric Health Information SystemComplicated appendicitisNonoperative managementInterval appendectomyIndex admissionRecurrent appendicitisReadmission ratesRisk of recurrent appendicitisKaplan-Meier survival analysisKaplan-Meier analysisConsecutive daysICD-10 diagnosis codesReceiving antibioticsAppendectomyAppendicitisClinical equipoisePatientsSurvival analysisNatural historyDay patientsDiagnosis codesAdmissionICD-10Unnecessary Scans Lead to Unnecessary Re-scans: Evaluating Clinical Management of Low and Intermediate Risk Pediatric Traumatic Brain Injuries
Rivero R, Curran I, Hellmann Z, Carroll M, Hornick M, Solomon D, DiLuna M, Morrell P, Christison-Lagay E. Unnecessary Scans Lead to Unnecessary Re-scans: Evaluating Clinical Management of Low and Intermediate Risk Pediatric Traumatic Brain Injuries. Journal Of Pediatric Surgery 2024, 60: 162097. PMID: 39693726, DOI: 10.1016/j.jpedsurg.2024.162097.Peer-Reviewed Original ResearchPediatric Emergency Care Applied Research NetworkPECARN guidelinesPediatric Emergency Care Applied Research Network criteriaClinically important traumatic brain injuryComputed tomographyRisk patientsCross-sectional imagingIntermediate risk group patientsHead traumaIntracranial injuryIntermediate risk patientsRisk group patientsLow-risk injuriesLow-risk patientsRetrospective cohort studyClinically significant progressionEvaluate clinical managementIncreased hospital costsMild head traumaPenetrating head traumaLength of stayTraumatic brain injuryNon-accidental traumaBrain injuryRetrospective reviewMassive thymic hyperplasia in a toddler masquerading as a loculated pleural effusion: A case report
Zolfaghari E, Shaughnessy M, Wu H, Caty M, Christison-Lagay E, Hornick M. Massive thymic hyperplasia in a toddler masquerading as a loculated pleural effusion: A case report. Journal Of Pediatric Surgery Case Reports 2024, 110: 102885. DOI: 10.1016/j.epsc.2024.102885.Peer-Reviewed Original ResearchMassive thymic hyperplasiaChest X-rayThymic hyperplasiaCase reportComputed tomographyDifferential diagnosis of pediatric patientsSurveillance chest x-raysDiagnosis of pediatric patientsTrue thymic hyperplasiaRecurrent respiratory distressPost-operative coursePercutaneous core biopsyLoculated pleural effusionHistory of multiple admissionsPersistent respiratory symptomsSurgical resectionCore biopsyParapneumonic effusionPediatric patientsAbnormal findingsPleural effusionRight thoracotomyRare conditionRight hemithoraxSuspected pneumoniaA Data-Driven Approach to Inguinal Hernia Repairs in Infants and Children
Hellmann Z, Shaughnessy M, Hornick M, Cowles R, Solomon D. A Data-Driven Approach to Inguinal Hernia Repairs in Infants and Children. Journal Of Laparoendoscopic & Advanced Surgical Techniques 2024, 34: 1128-1133. PMID: 39514238, DOI: 10.1089/lap.2024.0101.Peer-Reviewed Original ResearchInguinal hernia repairLaparoscopic inguinal hernia repairMetachronous contralateral herniaHernia repairOpen repairContralateral herniaCurrent Procedural TerminologyLaparoscopic repairRepair of bilateral herniasUnilateral inguinal hernia repairPediatric Health Information System databaseContralateral processus vaginalisPrimary laparoscopic repairHealth Information System databaseInfants 6 monthsPatients 6 monthsAssociated with lower ratesICD-10 procedure codeBilateral repairBilateral herniasProcessus vaginalisSurgical repairPatients 0Laparoscopic techniqueRecurrent herniaWeight Nadir and Long-Term Weight Outcomes After Laparoscopic Sleeve Gastrectomy in a Diverse Cohort of Adolescents and Young Adults
Hornick M, Chao G, Ying L, Nadzam G, Duffy A, Ghiassi S, Graetz E, Gibbs K, Morton J. Weight Nadir and Long-Term Weight Outcomes After Laparoscopic Sleeve Gastrectomy in a Diverse Cohort of Adolescents and Young Adults. Obesity Surgery 2024, 34: 2965-2973. PMID: 38935262, DOI: 10.1007/s11695-024-07374-3.Peer-Reviewed Original ResearchPreoperative weightSleeve gastrectomyWeight nadirWeight outcomesIntroductionLaparoscopic sleeve gastrectomyLaparoscopic sleeve gastrectomyGroup of patientsWeight loss strategiesYoung adultsDiverse group of patientsCohort of adolescentsLongitudinal weight dataBariatric proceduresFollow-upNon-Hispanic blacksLoss strategiesMedical recordsPatientsTWLLSGWeight dataWeight recurrenceDiverse cohortGastrectomyWeight change
2023
General Interest Letter to the Editor on “Laparoscopy is Increasingly Used for Pediatric Inguinal Hernia Repair”
Hellmann Z, Solomon D, Shaughnessy M, Cowles R, Hornick M. General Interest Letter to the Editor on “Laparoscopy is Increasingly Used for Pediatric Inguinal Hernia Repair”. Journal Of Pediatric Surgery 2023, 59: 347-348. PMID: 37788969, DOI: 10.1016/j.jpedsurg.2023.09.001.Peer-Reviewed Original ResearchDecreased Bone Density and Strength in Young People After Bariatric Surgery: How Much Matters?
Hornick M, Van Name M. Decreased Bone Density and Strength in Young People After Bariatric Surgery: How Much Matters? Journal Of Bone And Mineral Research 2023, 38: 931-932. PMID: 37314023, DOI: 10.1002/jbmr.4831.Commentaries, Editorials and Letters
2021
Giant retroperitoneal teratoma in an asymptomatic 6-month-old
Guerra M, Gisriel S, Christison-Lagay E, Hornick M. Giant retroperitoneal teratoma in an asymptomatic 6-month-old. Journal Of Pediatric Surgery Case Reports 2021, 65: 101768. DOI: 10.1016/j.epsc.2020.101768.Peer-Reviewed Original Research
2020
Management of Pneumatosis Intestinalis beyond the Neonatal Period
Abramov A, De Bie F, Hwang R, Hornick M, Allukian M, Nace G. Management of Pneumatosis Intestinalis beyond the Neonatal Period. Journal Of The American College Of Surgeons 2020, 231: e180. DOI: 10.1016/j.jamcollsurg.2020.08.475.Peer-Reviewed Original Research
Clinical Care
Overview
Matthew Hornick, MD, is a pediatric surgeon who treats a broad array of conditions in patients ranging in age from newborns to young adults. He feels very fortunate to have the opportunity to treat surgical problems in children, and as a father of two boys, understands that there is nothing more important to parents than their children’s health and well-being. His primary goal is to provide his patients with the same level of care that he would want and expect for his own children.
Dr. Hornick earned his medical degree at Yale and completed his General Surgery training at the Hospital of the University of Pennsylvania. As a research fellow at the Children’s Hospital of Philadelphia, he contributed to the development of an “artificial placenta” model to support extremely premature babies. Following residency, he completed his clinical fellowship in Pediatric Surgery at Children’s Hospital of Philadelphia.
Clinical Specialties
Fact Sheets
Pediatric Congenital Heart Surgery
Learn More on Yale MedicinePediatric Cancer Surgery
Learn More on Yale MedicineWide-Awake Needle Arthroscopy
Learn More on Yale MedicineAnesthesia for Hernia Repair
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Pediatric Surgery
330 Cedar Street
New Haven, CT 06510
United States
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