The 20 Best Methylmalonic Acidemia Doctors in The United States

Find the Top Methylmalonic Acidemia Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 309 doctor with experience in Methylmalonic Acidemia near The United States. Of these, 229 are Experienced, 71 are Advanced, 5 are Distinguished and 4 are Elite.

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309 providers found
    Elite in Methylmalonic Acidemia
    Medical Genetics
    Elite in Methylmalonic Acidemia
    Medical Genetics

    Rubenstein Child Health Building

    Baltimore, MD 
    Languages Spoken:
    English, Spanish

    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. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Methylmalonic Acidemia, Propionic Acidemia, Infantile Neutropenia, and Progressive External Ophthalmoplegia. Dr. Vernon is board certified in American Board Of Medical Genetics And Genomics and American Board Of Pediatrics.

    Elite in Methylmalonic Acidemia
    Medical Genetics
    Elite in Methylmalonic Acidemia
    Medical Genetics
    9000 Rockville Pike National Institutes Of Health, Building 49 Rm 4a18, 
    Bethesda, MD 
    Languages Spoken:
    English

    Charles Venditti is a Medical Genetics provider practicing medicine in Bethesda, Maryland. Dr. Venditti is rated as an Elite provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Methylmalonic Acidemia, Propionic Acidemia, Homocystinuria, and Niemann-Pick Disease.

    Elite in Methylmalonic Acidemia
    Medical Genetics | Pediatrics
    Elite in Methylmalonic Acidemia
    Medical Genetics | Pediatrics
    200 Hawkins Dr, 
    Iowa City, IA 
    Languages Spoken:
    English

    Oleg Shchelochkov is a Medical Genetics specialist and a Pediatrics provider practicing medicine in Iowa City, Iowa. Dr. Shchelochkov is rated as an Elite provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Propionic Acidemia, Argininosuccinic Aciduria, Methylmalonic Acidemia, and Urea Cycle Disorders (UCD).

    Learn about our expert tiers
    Elite in Methylmalonic Acidemia
    Medical Genetics | Pediatrics
    Elite in Methylmalonic Acidemia
    Medical Genetics | Pediatrics

    Lpch Medical Group Div Of Lucile

    725 Welch Rd, 
    Palo Alto, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Gregory Enns is a Medical Genetics specialist and a Pediatrics provider practicing medicine in Palo Alto, California. Dr. Enns is rated as an Elite provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 53 other conditions, according to our data. His clinical expertise encompasses Urea Cycle Disorders (UCD), Methylmalonic Acidemia, Arginase Deficiency, and Very Long-Chain Acyl-CoA Dehydrogenase (VLCAD) Deficiency. Dr. Enns is currently accepting new patients.

    Distinguished in Methylmalonic Acidemia
    Medical Genetics | Pediatrics
    Distinguished in Methylmalonic Acidemia
    Medical Genetics | Pediatrics

    Rubenstein Child Health Building

    200 North Wolfe Street, Rubenstein BLDG Lower Level, Rubenstein BLDG Lower Level, 
    Baltimore, MD 
    Languages Spoken:
    English

    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. She is also highly rated in 28 other conditions, according to our data. Her clinical expertise encompasses Methylmalonic Acidemia, Maple Syrup Urine Disease, Ornithine Transcarbamylase Deficiency, Phenylketonuria (PKU), and Deep Brain Stimulation. Dr. Hamosh is board certified in American Board Of Medical Genetics And Genomics.

    Experienced in Methylmalonic Acidemia
    Experienced in Methylmalonic Acidemia

    ETSU Physicians & Associates- Pediatrics

    325 N State Of Franklin Rd, 
    Johnson City, TN 
    Languages Spoken:
    English

    . Dr. Russi is rated as an Experienced provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 125 other conditions, according to our data. His clinical expertise encompasses Increased Head Circumference, Ehlers-Danlos Syndrome (EDS), Chromosome 8p Deletion, and Chromosome 6q Duplication. Dr. Russi is board certified in American Board Of Pediatrics and American Board Of Medical Genetics.

    Experienced in Methylmalonic Acidemia
    Experienced in Methylmalonic Acidemia

    Vanderbilt Medical Group- Teleneurology

    1161 21st Ave South, A-0118 Medical Center North, 
    Nashville, TN 
    Languages Spoken:
    English
    Offers Telehealth

    . Dr. Young is rated as an Experienced provider by MediFind in the treatment of Methylmalonic Acidemia. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Chorea, Movement Disorders, Parkinson's Disease, and Essential Tremor. Dr. Young is board certified in  .

    Advanced in Methylmalonic Acidemia
    Advanced in Methylmalonic Acidemia

    Georgia Neurology, LLC

    513 Great Oaks Drive, Suite B, 
    Monroe, GA 
    Experience:
    34+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Adeel Rahman is a Neurologist practicing medicine in Monroe, Georgia. He has been practicing medicine for over 34 years. Dr. Rahman is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Memory Loss, Dravet Syndrome, Seizures, and Autosomal Dominant Nocturnal Frontal Lobe Epilepsy (ADNFLE). Dr. Rahman is board certified in American Board Of Psychiatry & Neurology, Neurology - 2005. Dr. Rahman is currently accepting new patients.

    Experienced in Methylmalonic Acidemia
    Medical Genetics
    Experienced in Methylmalonic Acidemia
    Medical Genetics

    St. Christopher's Pediatric Associates Genetics - E. Erie Avenue

    160 E Erie Ave, 
    Philadelphia, PA 
    Languages Spoken:
    English

    . Dr. Perszyk is rated as an Experienced provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Succinyl-CoA:3-Ketoacid CoA Transferase Deficiency, Maternal Hyperphenylalaninemia, Dihydropteridine Reductase Deficiency, and Mucolipidosis 3. Dr. Perszyk is board certified in American Board Of Medical Genetics And Genomics.

    Experienced in Methylmalonic Acidemia
    Family Medicine
    Experienced in Methylmalonic Acidemia
    Family Medicine

    BHMA Wound Care

    16000 Johnston Memorial Dr, Ste 313, 
    Abingdon, VA 
    Languages Spoken:
    English

    . Dr. Wess is rated as an Experienced provider by MediFind in the treatment of Methylmalonic Acidemia. His clinical expertise encompasses Type 2 Diabetes (T2D), Hypertension, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Wess is board certified in Am Os Bd Family Practice.

    Distinguished in Methylmalonic Acidemia
    Family Medicine
    Distinguished in Methylmalonic Acidemia
    Family Medicine

    Yorick Wijting PT

    9460 N Name Uno Ste 250, 
    Gilroy, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Peter Coelho is a primary care provider, practicing in Family Medicine in Gilroy, California. Dr. Coelho is rated as a Distinguished provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Methylmalonic Acidemia, Methylmalonyl Coenzyme A Mutase Deficiency, Enlarged Liver, and Visceromegaly.

    Distinguished in Methylmalonic Acidemia
    Distinguished in Methylmalonic Acidemia

    Nirmala Aryal M.D. PLLC

    9150 W Indian School Rd Ste 107, 
    Phoenix, AZ 
    Languages Spoken:
    English
    Offers Telehealth

    Nirmala Aryal is a Neurologist practicing medicine in Phoenix, Arizona. Dr. Aryal is rated as a Distinguished provider by MediFind in the treatment of Methylmalonic Acidemia. She is also highly rated in 30 other conditions, according to our data. Her clinical expertise encompasses Transient Ischemic Attack (TIA), Migraine, Methylmalonic Acidemia, and Methylmalonic Acidemia with Homocystinuria.

    Distinguished in Methylmalonic Acidemia
    Medical Genetics
    Distinguished in Methylmalonic Acidemia
    Medical Genetics

    USC Care Medical Group Inc

    1500 San Pablo St, 
    Los Angeles, CA 
    Languages Spoken:
    English

    Shoji Yano is a Medical Genetics provider practicing medicine in Los Angeles, California. Dr. Yano is rated as a Distinguished provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Phenylketonuria (PKU), Infantile Refsum Disease, Methylmalonic Acidemia, and Maternal Hyperphenylalaninemia.

    Distinguished in Methylmalonic Acidemia
    Medical Genetics
    Distinguished in Methylmalonic Acidemia
    Medical Genetics
    3375 Hillview Ave, Room 2101, 
    Palo Alto, CA 
    Languages Spoken:
    English

    Tina Cowan is a Medical Genetics provider practicing medicine in Palo Alto, California. Dr. Cowan is rated as a Distinguished provider by MediFind in the treatment of Methylmalonic Acidemia. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Methylmalonic Acidemia, Biotinidase Deficiency, Homocystinuria, and Urea Cycle Disorders (UCD).

    Advanced in Methylmalonic Acidemia
    Medical Genetics | Pediatrics
    Advanced in Methylmalonic Acidemia
    Medical Genetics | Pediatrics

    UT Southwestern - Pediatrics

    5323 Harry Hines Blvd, 
    Dallas, TX 
    Languages Spoken:
    English, Spanish

    Luis Umana is a Medical Genetics specialist and a Pediatrics provider practicing medicine in Dallas, Texas. Dr. Umana is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 177 other conditions, according to our data. His clinical expertise encompasses Classic Galactosemia, Very Long-Chain Acyl-CoA Dehydrogenase (VLCAD) Deficiency, Biotinidase Deficiency, and Argininosuccinic Aciduria.

    Advanced in Methylmalonic Acidemia
    Internal Medicine
    Advanced in Methylmalonic Acidemia
    Internal Medicine

    Vallur Thirumavalavan, MD

    1553 State Route 27 Ste 2300, 
    Somerset, NJ 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Vallur Thirumavalavan is a primary care provider, practicing in Internal Medicine in Somerset, New Jersey. Dr. Thirumavalavan is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Methylmalonic Acidemia, Methylmalonyl Coenzyme A Mutase Deficiency, Cirrhosis, Gastrostomy, and Endoscopy. Dr. Thirumavalavan is currently accepting new patients.

    Advanced in Methylmalonic Acidemia
    Medical Genetics | Pediatrics
    Advanced in Methylmalonic Acidemia
    Medical Genetics | Pediatrics

    UT Southwestern - Pediatrics

    5323 Harry Hines Blvd, 
    Dallas, TX 
    Languages Spoken:
    English

    Garrett Gotway is a Medical Genetics specialist and a Pediatrics provider practicing medicine in Dallas, Texas. Dr. Gotway is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 132 other conditions, according to our data. His clinical expertise encompasses Caudal Duplication, 2q37 Deletion Syndrome, 47 XYY Syndrome, and Marshall Syndrome.

    Advanced in Methylmalonic Acidemia
    Medical Genetics
    Advanced in Methylmalonic Acidemia
    Medical Genetics
    1201 West La Veta Avenue, 
    Orange, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Richard Chang is a Medical Genetics provider practicing medicine in Orange, California. Dr. Chang is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 156 other conditions, according to our data. His clinical expertise encompasses Phenylketonuria (PKU), Maternal Hyperphenylalaninemia, Arginase Deficiency, and Urea Cycle Disorders (UCD). Dr. Chang is currently accepting new patients.

    Advanced in Methylmalonic Acidemia
    Internal Medicine
    Advanced in Methylmalonic Acidemia
    Internal Medicine

    Danny And Gail Jones Primary Care

    650 McHenry Rd Ste 3200, 
    Aberdeen, MD 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Robert Rapp is a primary care provider, practicing in Internal Medicine in Aberdeen, Maryland. Dr. Rapp is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Lung Metastases, Type 2 Diabetes (T2D), Methylmalonyl Coenzyme A Mutase Deficiency, and Methylmalonic Acidemia. Dr. Rapp is currently accepting new patients.

    Advanced in Methylmalonic Acidemia
    Medical Genetics
    Advanced in Methylmalonic Acidemia
    Medical Genetics

    UT Southwestern - Pediatric Genetics

    1935 Medical District Dr, 
    Dallas, TX 
    Languages Spoken:
    English, Spanish

    Laura Mackay is a Medical Genetics provider practicing medicine in Dallas, Texas. Dr. Mackay is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia. She is also highly rated in 132 other conditions, according to our data. Her clinical expertise encompasses Isovaleric Acidemia, Beta-Ketothiolase Deficiency, Biotinidase Deficiency, and Adrenoleukodystrophy (ALD).

    Showing 1-20 of 309

    Last Updated: 04/28/2026

    What is the definition of Methylmalonic Acidemia?

    Methylmalonic acidemia is a condition in which the body cannot break down certain proteins and fats. The result is a buildup of a substance called methylmalonic acid in the blood. This condition is passed down through families.

    It is one of several conditions called an "inborn error of metabolism."

    When should I see a Methylmalonic Acidemia doctor in The United States?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing a Methylmalonic Acidemia doctor in The United States?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank Methylmalonic Acidemia doctors in The United States?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Methylmalonic Acidemia doctors in The United States?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with a Methylmalonic Acidemia doctor in The United States?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Methylmalonic Acidemia doctor search results page. 

    Why is it important to get a second opinion from a different Methylmalonic Acidemia doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with a Methylmalonic Acidemia doctor in The United States?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Methylmalonic Acidemia doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Methylmalonic Acidemia doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Methylmalonic Acidemia doctors in The United States?

    Look for the filter feature on the left side of the Methylmalonic Acidemia doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find a Methylmalonic Acidemia doctor that offers video calls?

    Look for the filter feature on the left-side of the Methylmalonic Acidemia doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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