Hilary J. Vernon
Elite in Methylmalonic Acidemia

Dr. Hilary J. Vernon

Medical Genetics
Johns Hopkins Medicine
Rubenstein Child Health Building
Baltimore, MD 
Clinical Trials:Currently Recruiting for 1 Trial

Elite in Methylmalonic Acidemia
Johns Hopkins Medicine
Rubenstein Child Health Building
Baltimore, MD 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

Dr. Hilary Vernon is a Professor of Genetic Medicine and pediatrics at the Johns Hopkins University School of Medicine. She is also an attending physician at Kennedy Krieger Institute. Hilary Vernon has expertise in treating inborn errors of metabolism and mitochondrial disorders. She is the director of the Mitochondrial Care Center at The Johns Hopkins Hospital and the Barth Syndrome Interdisciplinary Clinic at the Kennedy Krieger Institute. Her research interests include understanding intermediary metabolism in Barth syndrome and in disorders of branch chain amino acid metabolism. Dr. Vernon also co-directs the Department of Genetic Medicine Clinical Trials Unit, and is the principal investigator on multiple clinical trials for rare diseases. Dr. Vernon received her medical degree and doctorate from Rutgers University, New Brunswick, New Jersey. She completed residencies in genetics and pediatrics at The Johns Hopkins University, and a fellowship in clinical laboratory biochemical genetics at The Johns Hopkins University. Dr. Vernon was recognized with the 2010 Francis F. Schwentker Award for Excellence in Research at Johns Hopkins University and the 2011 James B. Sidbury Jr. Fellowship in Biochemical Genetics at Johns Hopkins University.

Dr. Vernon is rated as an Elite provider by MediFind in the treatment of Methylmalonic Acidemia. Her top areas of expertise are Methylmalonic Acidemia, Propionic Acidemia, Infantile Neutropenia, Progressive External Ophthalmoplegia, and Gastrostomy.

Her clinical research consists of co-authoring 87 peer reviewed articles and participating in 3 clinical trials. MediFind looks at clinical research from the past 15 years. In particular, she has co-authored 6 articles in the study of Methylmalonic Acidemia.

Graduate Institution
Rutgers University Of New Jersey, Molecular Genetics, PhD, 2004
Residency
Johns Hopkins University School of Medicine, Pediatric Genetics, 2010
Specialties
Medical Genetics
Licenses
Pediatrics in MD
Board Certifications
American Board Of Medical Genetics And Genomics
American Board Of Pediatrics
Fellowships
Johns Hopkins University School of Medicine, Biochemical Genetics, 2011
Languages Spoken
English
Spanish
Gender
Female

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
CareFirst
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  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
First Health
  • INSURANCE PLAN
  • MEDICARE PDP
  • PPO
Geisinger
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  • POS
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Health Partners Plans
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
Johns Hopkins Healthcare
  • HMO
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE-MEDICAID PLAN
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
View 6 Less Insurance Carriers -

Locations

Rubenstein Child Health Building
Rubenstein BLDG Lower Level, Baltimore, MD 21287
Call: 443-287-9494

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


3 Clinical Trials

A Global, Phase 1/2, Open-Label, Dose Optimization Study to Evaluate the Safety, Pharmacodynamics, and Pharmacokinetics of mRNA-3927 in Participants With Propionic Acidemia
A Global, Phase 1/2, Open-Label, Dose Optimization Study to Evaluate the Safety, Pharmacodynamics, and Pharmacokinetics of mRNA-3927 in Participants With Propionic Acidemia
Enrollment Status: Recruiting
Publish Date: January 22, 2026
Intervention Type: Biological
Study Drug: mRNA-3927
Study Phase: Phase 1/Phase 2
A Phase 2a Safety, Tolerability, Pharmacokinetic, and Pharmacodynamic Study in Individuals With Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like Episodes (MELAS)
A Phase 2a Safety, Tolerability, Pharmacokinetic, and Pharmacodynamic Study in Individuals With Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like Episodes (MELAS)
Enrollment Status: Terminated
Publish Date: August 29, 2024
Intervention Type: Drug
Study Drug: IW-6463
Study Phase: Phase 2
A Phase 2, Open-label Study to Evaluate the Efficacy and Safety of KB195 in Subjects With A Urea Cycle Disorder With Inadequate Control on Standard of Care
A Phase 2, Open-label Study to Evaluate the Efficacy and Safety of KB195 in Subjects With A Urea Cycle Disorder With Inadequate Control on Standard of Care
Enrollment Status: Terminated
Publish Date: January 25, 2022
Intervention Type: Drug
Study Drug: KB195
Study Phase: Phase 2
View 2 Less Clinical Trial

85 Total Publications

Maternal cobalamin deficiency causing infantile seizures and developmental regression.
Maternal cobalamin deficiency causing infantile seizures and developmental regression.
Journal: BMJ case reports
Published: November 12, 2025
View All 85 Publications
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Elite in Methylmalonic Acidemia
Dr. Charles P. Venditti
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9000 Rockville Pike National Institutes Of Health, Building 49 Rm 4a18, 
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 (34.8 miles away)
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Languages Spoken:
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Charles Venditti is a Medical Genetics provider in Bethesda, Maryland. Dr. Venditti is rated as a Distinguished provider by MediFind in the treatment of Methylmalonic Acidemia. His top areas of expertise are Methylmalonic Acidemia, Propionic Acidemia, Homocystinuria, and Niemann-Pick Disease.

Ada Hamosh
Distinguished in Methylmalonic Acidemia
Dr. Ada Hamosh
Medical Genetics | Pediatrics
Distinguished in Methylmalonic Acidemia
Dr. Ada Hamosh
Medical Genetics | Pediatrics

Rubenstein Child Health Building

200 North Wolfe Street, Rubenstein BLDG Lower Level, Rubenstein BLDG Lower Level, 
Baltimore, MD 
 (1.1 miles away)
443-287-9494
Languages Spoken:
English
See accepted insurances

Dr. Ada Hamosh is the Dr. Frank V. Sutland Professor of Pediatric Genetics in the Departments of Genetic Medicine and Pediatrics. Since 2002, she has served as clinical director of the McKusick-Nathans Institute of Genetic Medicine, now Department of Genetic Medicine and scientific director of the Online Mendelian Inheritance in Man® (OMIM), a catalog of more than 16,800 human genes and genetic disorders created by Dr. Victor A. McKusick. Her research centers the molecular basis of Mendelian disorders, the integration of genetics into clinical practice and the diagnosis and management of inborn errors of metabolism. Dr. Hamosh earned a bachelor’s degree in biology from Wesleyan University, a medical degree from Georgetown University School of Medicine and a master’s of public health from Johns Hopkins University School of Public Health. She later completed a fellowship in medical and biochemical genetics from the Johns Hopkins School of Medicine, before joining the Johns Hopkins faculty in 1992. Dr. Hamosh began her genetics career focusing on cystic fibrosis, serving as coordinator of the International Cystic Fibrosis Genotype-Phenotype Consortium. She served as chair of the Maryland State Advisory Council for Hereditary & Congenital Disorders from 2001-2009, during which time she also served on the executive committee of the Genetic Counseling Training Program, run by Johns Hopkins University and the National Human Genome Research Institute. Dr. Hamosh has authored more than 128 publications on a variety of topics. In addition, she is a member of 16 professional associations and advisory committees including the American Society of Human Genetics, the Steering Committee of the Global Alliance for Genomics and Health, and the executive board of the Human Genome Organization, of which she will be President from 2023-2025. Dr. Hamosh was recognized in Baltimore magazine as one of the region’s top doctors in 2013, and 2016-2020. Dr. Hamosh is rated as a Distinguished provider by MediFind in the treatment of Methylmalonic Acidemia. Her top areas of expertise are Methylmalonic Acidemia, Maple Syrup Urine Disease, Ornithine Transcarbamylase Deficiency, Phenylketonuria (PKU), and Deep Brain Stimulation.

Advanced in Methylmalonic Acidemia
Dr. Jamie L. Fraser
Medical Genetics | Pediatrics
Advanced in Methylmalonic Acidemia
Dr. Jamie L. Fraser
Medical Genetics | Pediatrics
111 Michigan Ave Nw, Division Of Genetics And Metabolism, 
Washington, DC 
 (34.0 miles away)
202-476-5000
Languages Spoken:
English
See accepted insurances

Jamie Fraser is a Medical Genetics specialist and a Pediatrics provider in Washington, Washington, D.c.. Dr. Fraser is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia. Her top areas of expertise are Methylmalonic Acidemia, Leukodystrophy, Pyruvate Decarboxylase Deficiency, Pyruvate Dehydrogenase Deficiency, and Gastrostomy.

VIEW MORE METHYLMALONIC ACIDEMIA DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Vernon's expertise for a condition
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  • Elite
  • Methylmalonic Acidemia
    Dr. Vernon is
    Elite
    . Learn about Methylmalonic Acidemia.
    See more Methylmalonic Acidemia experts
  • Distinguished
  • Propionic Acidemia
    Dr. Vernon is
    Distinguished
    . Learn about Propionic Acidemia.
    See more Propionic Acidemia experts
  • Advanced
  • Beta-Ketothiolase Deficiency
    Dr. Vernon is
    Advanced
    . Learn about Beta-Ketothiolase Deficiency.
    See more Beta-Ketothiolase Deficiency experts
  • Coenzyme Q Cytochrome C Reductase Deficiency
    Dr. Vernon is
    Advanced
    . Learn about Coenzyme Q Cytochrome C Reductase Deficiency.
    See more Coenzyme Q Cytochrome C Reductase Deficiency experts
  • Delayed Growth
    Dr. Vernon is
    Advanced
    . Learn about Delayed Growth.
    See more Delayed Growth experts
  • Inborn Amino Acid Metabolism Disorder
    Dr. Vernon is
    Advanced
    . Learn about Inborn Amino Acid Metabolism Disorder.
    See more Inborn Amino Acid Metabolism Disorder experts
  • Inborn Renal Aminoaciduria
    Dr. Vernon is
    Advanced
    . Learn about Inborn Renal Aminoaciduria.
    See more Inborn Renal Aminoaciduria experts
  • Infantile Neutropenia
    Dr. Vernon is
    Advanced
    . Learn about Infantile Neutropenia.
    See more Infantile Neutropenia experts
View All 10 Advanced Conditions
  • Experienced
  • 15q11.2 Microdeletion
    Dr. Vernon is
    Experienced
    . Learn about 15q11.2 Microdeletion.
    See more 15q11.2 Microdeletion experts
  • 3p Deletion Syndrome
    Dr. Vernon is
    Experienced
    . Learn about 3p Deletion Syndrome.
    See more 3p Deletion Syndrome experts
  • Achalasia Microcephaly Syndrome
    Dr. Vernon is
    Experienced
    . Learn about Achalasia Microcephaly Syndrome.
    See more Achalasia Microcephaly Syndrome experts
  • Albinism
    Dr. Vernon is
    Experienced
    . Learn about Albinism.
    See more Albinism experts
  • Alkaptonuria
    Dr. Vernon is
    Experienced
    . Learn about Alkaptonuria.
    See more Alkaptonuria experts
  • Autism Spectrum Disorder
    Dr. Vernon is
    Experienced
    . Learn about Autism Spectrum Disorder.
    See more Autism Spectrum Disorder experts
View All 49 Experienced Conditions
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