Ada Hamosh
Distinguished in Methylmalonic Acidemia

Dr. Ada Hamosh

Medical Genetics | Pediatrics
Johns Hopkins Medicine
Rubenstein Child Health Building
200 North Wolfe Street, Rubenstein BLDG Lower Level, Rubenstein BLDG Lower Level, 
Baltimore, MD 

Distinguished in Methylmalonic Acidemia
Johns Hopkins Medicine
Rubenstein Child Health Building
200 North Wolfe Street, Rubenstein BLDG Lower Level, Rubenstein BLDG Lower Level, 
Baltimore, MD 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

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.

Her clinical research consists of co-authoring 83 peer reviewed articles and participating in 1 clinical trial. MediFind looks at clinical research from the past 15 years. In particular, she has co-authored 2 articles in the study of Methylmalonic Acidemia.

Graduate Institution
Johns Hopkins Bloomberg School Of Public Health, Epidemiology, MPH, 1989
Residency
Johns Hopkins University School of Medicine, Pediatrics, 1988
Specialties
Medical Genetics
Pediatrics
Licenses
Pediatrics in MD
Board Certifications
American Board Of Medical Genetics And Genomics
Fellowships
Johns Hopkins University School of Medicine, Biochemical Genetics, 1992
Hospital Affiliations
The Johns Hopkins Hospital
Languages Spoken
English
Gender
Female

Insurance

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Aetna
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Locations

Rubenstein Child Health Building
200 North Wolfe Street, Rubenstein BLDG Lower Level, 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.


1 Clinical Trials

MPS VI Clinical Surveillance Program (CSP)
MPS VI Clinical Surveillance Program (CSP)
Enrollment Status: Completed
Publish Date: April 05, 2021

83 Total Publications

The HUGO Clinical Genomics & Genomic Medicine Education Survey: clinicians globally need and want genomic medicine training.
The HUGO Clinical Genomics & Genomic Medicine Education Survey: clinicians globally need and want genomic medicine training.
Journal: Human genomics
Published: August 24, 2025
View All 83 Publications
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Hilary J. Vernon
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Distinguished in Methylmalonic Acidemia
Dr. Hilary J. Vernon
Medical Genetics

Rubenstein Child Health Building

Baltimore, MD 
 (1.0 miles away)
443-287-9494
Languages Spoken:
English, Spanish
See accepted insurances

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 a Distinguished 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.

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 
 (34.1 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. Hamosh's expertise for a condition
ConditionClose
    • Distinguished
    • Maple Syrup Urine Disease
      Dr. Hamosh is
      Distinguished
      . Learn about Maple Syrup Urine Disease.
      See more Maple Syrup Urine Disease experts
    • Methylmalonic Acidemia
      Dr. Hamosh is
      Distinguished
      . Learn about Methylmalonic Acidemia.
      See more Methylmalonic Acidemia experts
    • Ornithine Transcarbamylase Deficiency
      Dr. Hamosh is
      Distinguished
      . Learn about Ornithine Transcarbamylase Deficiency.
      See more Ornithine Transcarbamylase Deficiency experts
    • Advanced
    • Acrofacial Dysostosis Rodriguez Type
      Dr. Hamosh is
      Advanced
      . Learn about Acrofacial Dysostosis Rodriguez Type.
      See more Acrofacial Dysostosis Rodriguez Type experts
    • Acrofrontofacionasal Dysostosis Syndrome
      Dr. Hamosh is
      Advanced
      . Learn about Acrofrontofacionasal Dysostosis Syndrome.
      See more Acrofrontofacionasal Dysostosis Syndrome experts
    • Blepharophimosis
      Dr. Hamosh is
      Advanced
      . Learn about Blepharophimosis.
      See more Blepharophimosis experts
    • Carbamoyl Phosphate Synthetase 1 Deficiency
      Dr. Hamosh is
      Advanced
      . Learn about Carbamoyl Phosphate Synthetase 1 Deficiency.
      See more Carbamoyl Phosphate Synthetase 1 Deficiency experts
    • Citrullinemia
      Dr. Hamosh is
      Advanced
      . Learn about Citrullinemia.
      See more Citrullinemia experts
    • Crouzon Syndrome
      Dr. Hamosh is
      Advanced
      . Learn about Crouzon Syndrome.
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    View All 25 Advanced Conditions
    • Experienced
    • 3-Hydroxy-3-Methylglutaryl-CoA Lyase Deficiency
      Dr. Hamosh is
      Experienced
      . Learn about 3-Hydroxy-3-Methylglutaryl-CoA Lyase Deficiency.
      See more 3-Hydroxy-3-Methylglutaryl-CoA Lyase Deficiency experts
    • Achalasia Microcephaly Syndrome
      Dr. Hamosh is
      Experienced
      . Learn about Achalasia Microcephaly Syndrome.
      See more Achalasia Microcephaly Syndrome experts
    • Aniridia
      Dr. Hamosh is
      Experienced
      . Learn about Aniridia.
      See more Aniridia experts
    • Arginase Deficiency
      Dr. Hamosh is
      Experienced
      . Learn about Arginase Deficiency.
      See more Arginase Deficiency experts
    • Argininosuccinic Aciduria
      Dr. Hamosh is
      Experienced
      . Learn about Argininosuccinic Aciduria.
      See more Argininosuccinic Aciduria experts
    • Autism Spectrum Disorder
      Dr. Hamosh is
      Experienced
      . Learn about Autism Spectrum Disorder.
      See more Autism Spectrum Disorder experts
    View All 40 Experienced Conditions
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