The 20 Best RASopathies Doctors in Canada

Find the Top RASopathies Experts and Specialists

Last Updated: 11/08/2026

Save doctors for later
Sign Up
Not sure about your diagnosis?
Check Your Symptoms
Already have a doctor?
Find A Second Opinion

MediFind found 68 doctor with experience in RASopathies near Canada. Of these, 64 are Experienced, 3 are Advanced and 1 are Distinguished.

Location
LocationClose
68 providers found
    Distinguished in RASopathies
    Distinguished in RASopathies
    Referral may be required
    Montreal, QC, CA 

    Gregor Andelfinger practices practicing medicine in Montreal, Canada. Mr. Andelfinger is rated as a Distinguished expert by MediFind in the treatment of RASopathies. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses RASopathies, Bicuspid Aortic Valve, Costello Syndrome, and Noonan Syndrome.

    Advanced in RASopathies
    Advanced in RASopathies
    Referral may be required
    Hamilton, ON, CA 

    Susan Zeesman practices practicing medicine in Hamilton, Canada. Ms. Zeesman is rated as an Advanced expert by MediFind in the treatment of RASopathies. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses RASopathies, Cortical Dysplasia, Achalasia Microcephaly Syndrome, and Microcephaly.

    Advanced in RASopathies
    Advanced in RASopathies
    Referral may be required
    Vancouver, BC, CA 

    Caitlin Chang practices practicing medicine in Vancouver, Canada. Ms. Chang is rated as an Advanced expert by MediFind in the treatment of RASopathies. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Autosomal Cleft Palate, RASopathies, Blepharocheilodontic Syndrome, and Epidermal Nevus.

    Are you looking for a specific type of RASopathies?

    Common conditions include: Cardiofaciocutaneous Syndrome, Cardiomyopathic Lentiginosis, Costello Syndrome, Legius Syndrome, Noonan Syndrome

    Learn about our expert tiers
    Advanced in RASopathies
    Advanced in RASopathies
    Referral may be required
    Toronto, ON, CA 

    Uri Tabori practices practicing medicine in Toronto, Canada. Mr. Tabori is rated as an Advanced expert by MediFind in the treatment of RASopathies. He is also highly rated in 31 other conditions, according to our data. His clinical expertise encompasses Glioma, Gliomatosis Cerebri, Choroid Plexus Carcinoma, and Cerebral Ventricle Cancer.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    200 Elizabeth St, 
    Toronto, CA 

    Filio Billia practices practicing medicine in Toronto, Canada. Ms. Billia is rated as an Experienced expert by MediFind in the treatment of RASopathies. She is also highly rated in 10 other conditions, according to our data. Her clinical expertise encompasses Cardiogenic Shock, Heart Failure, Cardiomyopathy Due to Anthracyclines, Heart Transplant, and Lung Transplant.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required

    Alberta Health Services

    Edmonton, AB, CA 

    Peter Kannu practices practicing medicine in Edmonton, Canada. Mr. Kannu is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Fibrodysplasia Ossificans Progressiva, Spondyloepimetaphyseal Dysplasia Joint Laxity, Achondroplasia, and Cafe-Au-Lait Spots.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Calgary, AB, CA 

    Renee Perrier practices practicing medicine in Calgary, Canada. Ms. Perrier is rated as an Experienced expert by MediFind in the treatment of RASopathies. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Fryns Syndrome, Intestinal Pseudo-Obstruction, Peeling Skin Syndrome, and Mosaicism.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Montreal, QC, CA 

    Christopher Marquis practices practicing medicine in Montreal, Canada. Mr. Marquis is rated as an Experienced expert by MediFind in the treatment of RASopathies. His clinical expertise encompasses Linear Nevus Sebaceous Syndrome, RASopathies, Cardiofaciocutaneous Syndrome, and Noonan Syndrome.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Mount Sinai Hospital, 
    Toronto, ON, CA 

    Susan Blaser practices practicing medicine in Toronto, Canada. Ms. Blaser is rated as an Experienced expert by MediFind in the treatment of RASopathies. She is also highly rated in 22 other conditions, according to our data. Her clinical expertise encompasses Orbital Cellulitis, Cerebelloparenchymal Disorder 3, Oculocerebrocutaneous Syndrome, and X-Linked Chondrodysplasia Punctata 2.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    555 University Ave, M5G 1X8, 
    Toronto, ON, CA 

    Mary-louise Greer practices practicing medicine in Toronto, Canada. Ms. Greer is rated as an Experienced expert by MediFind in the treatment of RASopathies. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Li-Fraumeni Syndrome, Crohn's Disease, DICER1 Syndrome, Viral Gastroenteritis, and Small Bowel Resection.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Toronto, ON, CA 

    Robert Siddaway practices practicing medicine in Toronto, Canada. Mr. Siddaway is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Brain Tumor, Glioma, Gliomatosis Cerebri, and Noonan Syndrome.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Brampton, ON, CA 

    Brandon Sheffield practices practicing medicine in Brampton, Canada. Mr. Sheffield is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Lung Cancer, Non-Small Cell Lung Cancer (NSCLC), Pancreatic Ductal Adenocarcinoma, Costello Syndrome, and Tissue Biopsy.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Vancouver, BC, CA 

    Millan Patel practices practicing medicine in Vancouver, Canada. Mr. Patel is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Marden-Walker Syndrome, Split Hand Foot Malformation, Ectodermal Dysplasias, and Clouston Syndrome.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required

    Mount Sinai Hospital

    ON, CA 

    David Chitayat practices practicing medicine in Canada. Mr. Chitayat is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 43 other conditions, according to our data. His clinical expertise encompasses Symphalangism Distal, Fetal Akinesia Sequence, Cortical Dysplasia, and Arthrogryposis Multiplex Congenita.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Ottawa, ON, CA 

    Judith Allanson practices practicing medicine in Ottawa, Canada. Ms. Allanson is rated as an Experienced expert by MediFind in the treatment of RASopathies. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Blepharophimosis, Floating-Harbor Syndrome, Cardiofaciocutaneous Syndrome, and Ectodermal Dysplasias.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Quebec, QC, CA 

    Eric Dumont practices practicing medicine in Quebec, Canada. Mr. Dumont is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Aortic Valve Stenosis, Aortic Regurgitation, Heart Block, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    101 College Street, M5G 1×5, 
    Toronto, ON, CA 

    Oliver Kent practices practicing medicine in Toronto, Canada. Mr. Kent is rated as an Experienced expert by MediFind in the treatment of RASopathies. His clinical expertise encompasses Pancreatic Cancer, RASopathies, and Metastatic Brain Tumor.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Mount Sinai Hospital, 
    Toronto, ON, CA 

    Ebba Alkhunaizi practices practicing medicine in Toronto, Canada. Ms. Alkhunaizi is rated as an Experienced expert by MediFind in the treatment of RASopathies. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Fetal Akinesia Sequence, Floating-Harbor Syndrome, Dubowitz Syndrome, and Spondylocostal Dysostosis.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Toronto, ON, CA 

    Kirsten Farncombe practices practicing medicine in Toronto, Canada. Ms. Farncombe is rated as an Experienced expert by MediFind in the treatment of RASopathies. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Li-Fraumeni Syndrome, Von Hippel-Lindau (VHL) Syndrome, Giant Mammary Hamartoma, and Noonan Syndrome.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required
    Toronto, ON, CA 

    Anita Villani practices practicing medicine in Toronto, Canada. Ms. Villani is rated as an Experienced expert by MediFind in the treatment of RASopathies. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Li-Fraumeni Syndrome, DICER1 Syndrome, Turcot Syndrome, and Rommen Mueller Sybert Syndrome.

    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 1-20 of 68

    Last Updated: 11/08/2026

    What is the definition of RASopathies?

    RASopathies are a group of rare syndromes causes by mutations in the genes that make proteins for the Ras/MAPK cell signaling pathway. This pathway controls cell functions such as cell growth, cell maturation, and cell death. There are several types of RASopathy syndromes, including cardiofaciocutaneous syndrome, Costello syndrome, Legius syndrome, neurofibromatosis type 1, Noonan syndrome, and capillary malformation-arteriovenous malformation syndrome.

    When should I see a RASopathies doctor in Canada?

    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 RASopathies doctor in Canada?

    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 RASopathies doctor in Canada?

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

    RASopathies doctor near New York, NY
    RASopathies doctor near Los Angeles, CA
    RASopathies doctor near Chicago, IL
    RASopathies doctor near Houston, TX
    RASopathies doctor near Phoenix, AZ
    RASopathies doctor near Philadelphia, PA
    RASopathies doctor near Atlanta, GA
    RASopathies doctor near Boston, MA
    RASopathies doctor near Dallas, TX
    RASopathies doctor near San Jose, CA

    How does MediFind rank RASopathies doctors in Canada?

    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 RASopathies doctors in Canada?

    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 RASopathies doctor in Canada?

    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 RASopathies doctor search results page. 

    Why is it important to get a second opinion from a different RASopathies 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 RASopathies doctor in Canada?

    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 RASopathies 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 RASopathies 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 RASopathies doctors in Canada?

    Look for the filter feature on the left side of the RASopathies 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 RASopathies doctor that offers video calls?

    Look for the filter feature on the left-side of the RASopathies 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 

    Read more about our Content Policy. 

    Recommended has been selected.