The 20 Best RASopathies Doctors Near Me in Saint Louis, MO

Find the Top RASopathies Experts and Specialists

Last Updated: 09/19/2026

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MediFind found 100 doctor with experience in RASopathies near Saint Louis, MO. Of these, 93 are Experienced, 5 are Advanced, 1 are Distinguished and 1 are Elite.

Location
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100 providers found
    Elite in RASopathies
    Family Medicine
    Elite in RASopathies
    Family Medicine

    Office

    272 Lamp And Lantern Vlg, 
    Chesterfield, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Amy Roberts is a primary care provider, practicing in Family Medicine in Chesterfield, Missouri. Dr. Roberts is rated as an Elite provider by MediFind in the treatment of RASopathies. She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses RASopathies, Noonan Syndrome, Cardiomyopathic Lentiginosis, Cardiofaciocutaneous Syndrome, and Heart Transplant. Dr. Roberts is currently accepting new patients.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required

    Office

    4500 Forest Park Ave Ste 1B, 
    Saint Louis, MO 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Gregory Zipfel is a Neurosurgery provider practicing medicine in Saint Louis, Missouri. Dr. Zipfel is rated as an Experienced provider by MediFind in the treatment of RASopathies. He is also highly rated in 43 other conditions, according to our data. His clinical expertise encompasses Subarachnoid Hemorrhage, Arteriovenous Malformation, Meningioma, Endovascular Embolization, and Thrombectomy. Dr. Zipfel is currently accepting new patients.

    Experienced in RASopathies
    Family Medicine
    Experienced in RASopathies
    Family Medicine

    Family Care Of Eastern Jackson County

    725 N 7 Hwy Ste A, 
    Blue Springs, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Bruce Scully is a primary care provider, practicing in Family Medicine in Blue Springs, Missouri. Dr. Scully is rated as an Experienced provider by MediFind in the treatment of RASopathies. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Hypertension, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and High Cholesterol. Dr. Scully is currently accepting new patients.

    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
    Distinguished in RASopathies
    Distinguished in RASopathies
    Referral may be required

    Office

    4921 Parkview Pl Ste 6C, 
    Saint Louis, MO 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Michael Chicoine is a Neurosurgery provider practicing medicine in Saint Louis, Missouri. Dr. Chicoine is rated as a Distinguished provider by MediFind in the treatment of RASopathies. He is also highly rated in 72 other conditions, according to our data. His clinical expertise encompasses Meningioma, Pituitary Tumor, Brain Tumor, Endoscopic Transnasal Transsphenoidal Surgery, and Nerve Decompression. Dr. Chicoine is currently accepting new patients.

    Experienced in RASopathies
    Experienced in RASopathies

    SSM Health Medical Group

    1101 Highway K, 
    O Fallon, MO 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Michael Hemmersmeier is a primary care provider, practicing in Family Medicine in O Fallon, Missouri. Dr. Hemmersmeier is rated as an Experienced provider by MediFind in the treatment of RASopathies. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Familial Hypertension, Coronary Heart Disease, Sacroiliac Joint Disease, Hypothyroidism, and Endoscopy. Dr. Hemmersmeier is board certified in Missouri Dept Of Health/Narcotics&Dangerous Drugs , American Board Of Family Medicine , Missouri State Board Of Registration, and Drug Enforcement Administration . Dr. Hemmersmeier is currently accepting new patients.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required

    St. Louis Children's Hospital

    1 Childrens Pl, 
    Saint Louis, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Susan Bayliss is a Pediatrics provider practicing medicine in Saint Louis, Missouri. Dr. Bayliss is rated as an Experienced provider by MediFind in the treatment of RASopathies. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Legius Syndrome, Cardiofaciocutaneous Syndrome, Osteopoikilosis, and Aplasia Cutis Congenita. Dr. Bayliss is currently accepting new patients.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required

    Washington University Workers Compensation Specialists LLC

    969 N Mason Rd, 
    Saint Louis, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Caroline Mann is a Dermatologist practicing medicine in Saint Louis, Missouri. Dr. Mann is rated as an Experienced provider by MediFind in the treatment of RASopathies. She is also highly rated in 19 other conditions, according to our data. Her clinical expertise encompasses Neurocutaneous Melanosis, Epidermal Nevus, Graham-Little-Piccardi-Lassueur Syndrome, and Actinic Keratosis. Dr. Mann is currently accepting new patients.

    Experienced in RASopathies
    Dermatology
    Experienced in RASopathies
    Dermatology
    Referral may be required

    Meramec Dermatology

    3783 Vogel Rd, 
    Arnold, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Karl Staser is a Dermatologist practicing medicine in Arnold, Missouri. Dr. Staser is rated as an Experienced provider by MediFind in the treatment of RASopathies. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Neurocutaneous Melanosis, Epidermal Nevus, Neurofibromatosis, and Neurofibromatosis Type 1 (NF1). Dr. Staser is currently accepting new patients.

    Experienced in RASopathies
    Family Medicine
    Experienced in RASopathies
    Family Medicine

    Northland Family Care

    9151 NE 81st Ter Ste 100, 
    Kansas City, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Steven Nelson is a primary care provider, practicing in Family Medicine in Kansas City, Missouri. Dr. Nelson is rated as an Experienced provider by MediFind in the treatment of RASopathies. He is also highly rated in 48 other conditions, according to our data. His clinical expertise encompasses Empyema, Sinusitis, Glucocorticoid-Remediable Aldosteronism, Ureteroscopy, and Vertebroplasty. Dr. Nelson is currently accepting new patients.

    Experienced in RASopathies
    Dermatology
    Experienced in RASopathies
    Dermatology
    Referral may be required
    1060 Meyer Road, 
    Wentzville, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Omar Jassim is a Dermatologist practicing medicine in Wentzville, Missouri. Dr. Jassim is rated as an Experienced provider by MediFind in the treatment of RASopathies. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Actinic Keratosis, Warts, Seborrheic Keratosis, and Basal Cell Skin Cancer. Dr. Jassim is board certified in American Board Of Pathology/Dermatopathology , American Board Of Dermatology - Micrographic Dermatologic Surgery , Missouri Dept Of Health/Narcotics&Dangerous Drugs , American Board Of Dermatology , Missouri State Board Of Registration, and Drug Enforcement Administration . Dr. Jassim is currently accepting new patients.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required

    Mercy Children's Hospital Springfield

    1235 E Cherokee St, 
    Springfield, MO 
    Languages Spoken:
    English, French, Italian, Spanish
    Accepting New Patients
    Offers Telehealth

    Carmen Ramos-Irizarry is a Pediatric Surgeon practicing medicine in Springfield, Missouri. Dr. Ramos-Irizarry is rated as an Experienced provider by MediFind in the treatment of RASopathies. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Infantile Pyloric Stenosis, Umbilical Hernia, Atresia of Small Intestine, Duodenal Atresia, and Tissue Biopsy. Dr. Ramos-Irizarry is currently accepting new patients.

    Experienced in RASopathies
    Otolaryngology
    Experienced in RASopathies
    Otolaryngology
    Referral may be required

    Ascentist Management

    4880 NE Goodview Circle, 
    Lee's Summit, MO 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Robert Cullen is an Otolaryngologist practicing medicine in Lee's Summit, Missouri. Dr. Cullen is rated as an Experienced provider by MediFind in the treatment of RASopathies. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Infant Hearing Loss, Jones Syndrome, DFNB1, and Cholesteatoma. Dr. Cullen is currently accepting new patients.

    Experienced in RASopathies
    Family Medicine
    Experienced in RASopathies
    Family Medicine

    Clay Platte Family Medicine Clinic

    5501 NW 62nd Ter Ste 100, 
    Kansas City, MO 
    Languages Spoken:
    English, Spanish
    Accepting New Patients

    Nathan Granger is a primary care provider, practicing in Family Medicine in Kansas City, Missouri. Dr. Granger is rated as an Experienced provider by MediFind in the treatment of RASopathies. He is also highly rated in 62 other conditions, according to our data. His clinical expertise encompasses Sitosterolemia, High Cholesterol, Familial Hypertriglyceridemia, and Type 2 Diabetes (T2D). Dr. Granger is currently accepting new patients.

    Experienced in RASopathies
    Experienced in RASopathies
    Referral may be required

    Children's Mercy-Pediatric Care North

    8781 N Platte Purchase Dr, 
    Kansas City, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Ermalyn Kubart is a Pediatrics provider practicing medicine in Kansas City, Missouri. Dr. Kubart is rated as an Experienced provider by MediFind in the treatment of RASopathies. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Obesity in Children, Autism Spectrum Disorder, Herpangina, and Croup. Dr. Kubart is currently accepting new patients.

    Experienced in RASopathies
    Family Medicine
    Experienced in RASopathies
    Family Medicine

    Clay Platte Family Medicine Clinic

    5501 NW 62nd Ter Ste 100, 
    Kansas City, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Duana Meseyton is a primary care provider, practicing in Family Medicine in Kansas City, Missouri. Dr. Meseyton is rated as an Experienced provider by MediFind in the treatment of RASopathies. She is also highly rated in 52 other conditions, according to our data. Her clinical expertise encompasses Vitamin D Deficiency, Generalized Anxiety Disorder (GAD), Seasonal Affective Disorder (SAD), and Multiple Carboxylase Deficiency. Dr. Meseyton is currently accepting new patients.

    Advanced in RASopathies
    Advanced in RASopathies
    Referral may be required

    Washington University

    660 S Euclid Ave, 
    Saint Louis, MO 
    Languages Spoken:
    English, Arabic
    Accepting New Patients

    George Ansstas is a Hematologist practicing medicine in Saint Louis, Missouri. Dr. Ansstas is rated as an Advanced provider by MediFind in the treatment of RASopathies. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Pediatric Low-Grade Glioma (pLGG), Metastatic Uveal Melanoma, RASopathies, Bone Marrow Aspiration, and Tissue Biopsy. Dr. Ansstas is currently accepting new patients.

    Advanced in RASopathies
    Advanced in RASopathies
    Referral may be required
    402 N Keene St, Ste 101, 
    Columbia, MO 
    Languages Spoken:
    English

    Catharine Harris is a Pediatrics provider practicing medicine in Columbia, Missouri. Dr. Harris is rated as an Advanced provider by MediFind in the treatment of RASopathies. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Omphalocele, Umbilical Hernia, RASopathies, and Lissencephaly 2.

    Advanced in RASopathies
    Ophthalmology
    Advanced in RASopathies
    Ophthalmology
    Referral may be required

    Premiere Eye Associates PC

    1400 Hwy 61 S Ste 130, 
    Crystal City, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Randall Nacke is an Ophthalmologist practicing medicine in Crystal City, Missouri. Dr. Nacke is rated as an Advanced provider by MediFind in the treatment of RASopathies. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Cataract, RASopathies, Neurotrophic Keratitis, and Subconjunctival Hemorrhage. Dr. Nacke is currently accepting new patients.

    Advanced in RASopathies
    Neurosurgery
    Advanced in RASopathies
    Neurosurgery
    Referral may be required

    Washington University School Of Medicine

    4921 Parkview Pl, 
    Saint Louis, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Paul Santiago is a Neurosurgery provider practicing medicine in Saint Louis, Missouri. Dr. Santiago is rated as an Advanced provider by MediFind in the treatment of RASopathies. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Scoliosis, Cervical Spondylosis, Sciatica, Laminectomy, and Microdiscectomy. Dr. Santiago is currently accepting new patients.

    Advanced in RASopathies
    Neuroradiology
    Advanced in RASopathies
    Neuroradiology
    Referral may be required

    Washington University And Barnes-Jewish Orthopedic Center

    14532 South Outer 40 Rd, 
    Chesterfield, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Matthew Parsons is a Neuroradiologist practicing medicine in Chesterfield, Missouri. Dr. Parsons is rated as an Advanced provider by MediFind in the treatment of RASopathies. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Stroke, Pediatric Low-Grade Glioma (pLGG), RASopathies, ALK-Positive Non-Small Cell Lung Cancer, and Bone Marrow Aspiration. Dr. Parsons is currently accepting new patients.

    Showing 1-20 of 100

    Last Updated: 09/19/2026

    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 near Saint Louis, MO?

    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 near Saint Louis, MO?

    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 RASopathies doctors near Saint Louis, MO?

    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 near Saint Louis, MO?

    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 near Saint Louis, MO?

    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 near Saint Louis, MO?

    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 near Saint Louis, MO?

    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 

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