The 20 Best Guanidinoacetate Methyltransferase Deficiency Doctors Near Me in Ontario, CA

Find the Top Guanidinoacetate Methyltransferase Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 12 doctor with experience in Guanidinoacetate Methyltransferase Deficiency near Ontario, CA. Of these, 6 are Experienced, 4 are Distinguished and 2 are Advanced.

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12 providers found
    Distinguished in Guanidinoacetate Methyltransferase Deficiency

    Saadet Mahmutoglu-Mercimek
    Distinguished in Guanidinoacetate Methyltransferase Deficiency

    Saadet Mahmutoglu-Mercimek
    Toronto, ON, CA 

    Saadet Mahmutoglu-Mercimek practices practicing medicine in Toronto, Canada. Mahmutoglu-Mercimek is rated as a Distinguished expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. They are also highly rated in 3 other conditions, according to our data. Their clinical expertise encompasses Guanidinoacetate Methyltransferase Deficiency, Epilepsy in Children, Homocystinuria due to MTHFR Deficiency, and X-Linked Creatine Deficiency.

    Distinguished in Guanidinoacetate Methyltransferase Deficiency

    Andreas C. Schulze
    Distinguished in Guanidinoacetate Methyltransferase Deficiency

    Andreas C. Schulze
    555 University Ave, M5G 1X8, 
    Toronto, ON, CA 

    Andreas Schulze practices practicing medicine in Toronto, Canada. Mr. Schulze is rated as a Distinguished expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Arginase Deficiency, Urea Cycle Disorders (UCD), Guanidinoacetate Methyltransferase Deficiency, and X-Linked Creatine Deficiency.

    Distinguished in Guanidinoacetate Methyltransferase Deficiency

    Ilona Tkachyova
    Distinguished in Guanidinoacetate Methyltransferase Deficiency

    Ilona Tkachyova
    Toronto, ON, CA 

    Ilona Tkachyova practices practicing medicine in Toronto, Canada. Ms. Tkachyova is rated as a Distinguished expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Guanidinoacetate Methyltransferase Deficiency, X-Linked Creatine Deficiency, and Mucopolysaccharidoses (MPS).

    Learn about our expert tiers
    Distinguished in Guanidinoacetate Methyltransferase Deficiency

    Michael B. Tropak
    Distinguished in Guanidinoacetate Methyltransferase Deficiency

    Michael B. Tropak
    Toronto, ON, CA 

    Michael Tropak practices practicing medicine in Toronto, Canada. Mr. Tropak is rated as a Distinguished expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Guanidinoacetate Methyltransferase Deficiency, Gangliosidosis, Tay-Sachs Disease, and Microcephaly Deafness Syndrome.

    Advanced in Guanidinoacetate Methyltransferase Deficiency

    Alex Y. Lee
    Advanced in Guanidinoacetate Methyltransferase Deficiency

    Alex Y. Lee
    Ottawa, ON, CA 

    Alex Lee practices practicing medicine in Ottawa, Canada. Mr. Lee is rated as an Advanced expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Guanidinoacetate Methyltransferase Deficiency, Cholecystitis, Gallbladder Cancer, Cervical Cancer, and Pancreaticoduodenectomy.

    Advanced in Guanidinoacetate Methyltransferase Deficiency

    Beth K. Potter
    Advanced in Guanidinoacetate Methyltransferase Deficiency

    Beth K. Potter
    600 Peter Morand Crescent, 
    Ottawa, ON, CA 

    Beth Potter practices practicing medicine in Ottawa, Canada. Ms. Potter is rated as an Advanced expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Medium-Chain Acyl-CoA Dehydrogenase Deficiency, Phenylketonuria (PKU), Guanidinoacetate Methyltransferase Deficiency, and X-Linked Creatine Deficiency.

    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Ankit Sinha
    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Ankit Sinha
    Toronto, ON, CA 

    Ankit Sinha practices practicing medicine in Toronto, Canada. Mr. Sinha is rated as an Experienced expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Cerebral Hypoxia, Guanidinoacetate Methyltransferase Deficiency, Ovarian Cancer, and Scalded Skin Syndrome.

    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Matthijs C. Van Eede
    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Matthijs C. Van Eede
    25 Orde Street, 
    Toronto, ON, CA 

    Matthijs Van Eede practices practicing medicine in Toronto, Canada. Mr. Van Eede is rated as an Experienced expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. His clinical expertise encompasses Guanidinoacetate Methyltransferase Deficiency, Autism Spectrum Disorder, and Delayed Growth.

    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Jagdeep S. Walia
    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Jagdeep S. Walia
    Kingston, ON, CA 

    Jagdeep Walia practices practicing medicine in Kingston, Canada. Mr. Walia is rated as an Experienced expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Sandhoff Disease, Tay-Sachs Disease, Gangliosidosis, and Medium-Chain Acyl-CoA Dehydrogenase Deficiency.

    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Melissa Mitchell
    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Melissa Mitchell
    Kingston, ON, CA 

    Melissa Mitchell practices practicing medicine in Kingston, Canada. Ms. Mitchell is rated as an Experienced expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Tay-Sachs Disease, Gangliosidosis, Sandhoff Disease, and Cerebral Hypoxia.

    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Mark Henkelman
    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Mark Henkelman
    Toronto, ON, CA 

    Mark Henkelman practices practicing medicine in Toronto, Canada. Mr. Henkelman is rated as an Experienced expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. His clinical expertise encompasses Guanidinoacetate Methyltransferase Deficiency and Autism Spectrum Disorder.

    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Robin Z. Hayeems
    Experienced in Guanidinoacetate Methyltransferase Deficiency

    Robin Z. Hayeems
    Toronto, ON, CA 

    Robin Hayeems practices practicing medicine in Toronto, Canada. Hayeems is rated as an Experienced expert by MediFind in the treatment of Guanidinoacetate Methyltransferase Deficiency. They are also highly rated in 3 other conditions, according to our data. Their clinical expertise encompasses Transient Familial Hyperbilirubinemia, Newborn Jaundice, Cystic Fibrosis, and Guanidinoacetate Methyltransferase Deficiency.

    While we make every effort to provide the best results possible, data is currently limited outside of the United States. Doctors listed may include both clinicians and researchers, and individuals relocate frequently. We recommend contacting doctors directly to confirm their location and areas of focus. Contact information is provided when available. Learn more about our expert tiers.
    Showing 1-12 of 12

    Last Updated: 04/28/2026

    What is the definition of Guanidinoacetate Methyltransferase Deficiency?

    Guanidinoacetate methyltransferase deficiency is an inherited disorder that primarily affects the brain and muscles. Without early treatment, people with this disorder have neurological problems that are usually severe. These problems include intellectual disability, speech development limited to a few words, and recurrent seizures (epilepsy). Affected individuals may also exhibit autistic behaviors that affect communication and social interaction or self-injurious behaviors such as head-banging. Other features of this disorder can include involuntary movements (extrapyramidal dysfunction) such as tremors or facial tics.

    When should I see a Guanidinoacetate Methyltransferase Deficiency doctor in Ontario, CA?

    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 Guanidinoacetate Methyltransferase Deficiency doctor in Ontario, CA?

    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 do I find the best Guanidinoacetate Methyltransferase Deficiency doctor in Ontario, CA?

    You can find a Guanidinoacetate Methyltransferase Deficiency doctor in any of the 10 largest U.S. cities by clicking below:

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    How does MediFind rank Guanidinoacetate Methyltransferase Deficiency doctors in Ontario, CA?

    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 Guanidinoacetate Methyltransferase Deficiency doctors in Ontario, CA?

    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 Guanidinoacetate Methyltransferase Deficiency doctor in Ontario, CA?

    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 Guanidinoacetate Methyltransferase Deficiency doctor search results page. 

    Why is it important to get a second opinion from a different Guanidinoacetate Methyltransferase Deficiency 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 Guanidinoacetate Methyltransferase Deficiency doctor in Ontario, CA?

    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 Guanidinoacetate Methyltransferase Deficiency 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 Guanidinoacetate Methyltransferase Deficiency 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 Guanidinoacetate Methyltransferase Deficiency doctors in Ontario, CA?

    Look for the filter feature on the left side of the Guanidinoacetate Methyltransferase Deficiency 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 Guanidinoacetate Methyltransferase Deficiency doctor that offers video calls?

    Look for the filter feature on the left-side of the Guanidinoacetate Methyltransferase Deficiency 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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