The 20 Best Complement Component 2 Deficiency Doctors in The United States

Find the Top Complement Component 2 Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 899 doctor with experience in Complement Component 2 Deficiency near The United States. Of these, 749 are Experienced, 142 are Advanced and 8 are Distinguished.

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899 providers found
    Experienced in Complement Component 2 Deficiency
    Pulmonary Medicine
    Experienced in Complement Component 2 Deficiency
    Pulmonary Medicine

    The Allergy, Asthma & Sinus Center

    2428 Knob Creek Rd, Ste 102, 
    Johnson City, TN 
    Languages Spoken:
    English
    Offers Telehealth

    . Dr. Jones is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Ozena, Nonallergic Rhinopathy, Empyema, and Sinusitis. Dr. Jones is board certified in American Board Of Allergy And Immunology and American Board Of Internal Medicine.

    Experienced in Complement Component 2 Deficiency
    Allergy and Immunology
    Experienced in Complement Component 2 Deficiency
    Allergy and Immunology

    Internal Medicine Specialties At Durham Outpatient Center

    4400 Emile St., 
    Omaha, NE 
    Experience:
    15+ years
    Languages Spoken:
    English

    Joel Van De Graaff is an Allergy and Immunologist practicing medicine in Omaha, Nebraska. He has been practicing medicine for over 15 years. Dr. Van De Graaff is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Vocal Cord Dysfunction, Common Variable Immune Deficiency, Primary Immunodeficiency (PID), and Angioedema.

    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology

    Veros Health

    1551 Professional Lane, Suite 170, 
    Longmont, CO 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Isaac Melamed is an Allergy and Immunologist practicing medicine in Longmont, Colorado. Dr. Melamed is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Primary Immunodeficiency (PID), Common Variable Immune Deficiency, Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus Infections, and Hereditary Angioedema. Dr. Melamed is board certified in American Board Of Allergy And Immunology. Dr. Melamed is currently accepting new patients.

    Learn about our expert tiers
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology

    Apex Allergy & Immunology

    534 Woods Lake Road, 
    Greenville, SC 
    Languages Spoken:
    English
    Accepting New Patients

    James Kuhlen is an Allergy and Immunologist practicing medicine in Greenville, South Carolina. Dr. Kuhlen is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 24 other conditions, according to our data. His clinical expertise encompasses Hives, Vibratory Urticaria, Chronic Spontaneous Urticaria (CSU), and Angioedema. Dr. Kuhlen is currently accepting new patients.

    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology

    ENT & Allergy Of Delaware

    1401 Foulk Road, Suite 205, 
    Wilmington, DE 
    Experience:
    39+ years
    Languages Spoken:
    English
    Offers Telehealth

    Gregory Marcotte is an Allergy and Immunologist practicing medicine in Wilmington, Delaware. He has been practicing medicine for over 39 years. Dr. Marcotte is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Grass Allergy, Allergic Rhinitis, Sinusitis, and Hives. Dr. Marcotte is board certified in American Board Of Allergy And Immunology, Allergy And Immunology.

    Advanced in Complement Component 2 Deficiency
    Pediatric Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Pediatric Allergy and Immunology

    Akron General Physician Office Building

    224 West Exchange Street, 
    Akron, OH 
    Experience:
    32+ years
    Languages Spoken:
    English
    Offers Telehealth

    Bela Faltay is a Pediatric Allergy and Immunologist practicing medicine in Akron, Ohio. He has been practicing medicine for over 32 years. Dr. Faltay is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 21 other conditions, according to our data. His clinical expertise encompasses Angioedema, Allergic Conjunctivitis, Hives, and Conjunctivitis (Pink Eye). Dr. Faltay is board certified in American Board Of Allergy And Immunology, 2003.

    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology

    Allergy, Asthma & Sinus Center – Little River

    3980 Highway 9 East, Suite 260, 
    Little River, SC 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Danny Douglas is an Allergy and Immunologist practicing medicine in Little River, South Carolina. Dr. Douglas is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Allergic Rhinitis, Sinusitis, Ozena, and Nonallergic Rhinopathy. Dr. Douglas is currently accepting new patients.

    Advanced in Complement Component 2 Deficiency
    Pediatric Allergy and Immunology | Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Pediatric Allergy and Immunology | Allergy and Immunology

    Corewell Health Pediatric Allergy And Immunology - 35 Michigan St NE

    35 Michigan Street Northeast, Suite 3003, 
    Grand Rapids, MI 
    Experience:
    15+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ted Kelbel is a Pediatric Allergy and Immunologist and an Allergy and Immunologist practicing medicine in Grand Rapids, Michigan. He has been practicing medicine for over 15 years. Dr. Kelbel is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Hereditary Angioedema, Hives, Hyperphenylalaninemia Due to Dehydratase Deficiency, and Complement Component 2 Deficiency. Dr. Kelbel is board certified in American Board Of Allergy And Immunology and American Board Of Pediatrics. Dr. Kelbel is currently accepting new patients.

    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology

    Allergy Asthma And Immunology Associates PC

    2808 S 80th Ave Ste 210, 
    Omaha, NE 
    Languages Spoken:
    English

    James Tracy is an Allergy and Immunologist practicing medicine in Omaha, Nebraska. Dr. Tracy is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Sinusitis, Allergic Rhinitis, Grass Allergy, and Common Variable Immune Deficiency.

    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology

    Medical Arts Allergy PC

    1700 Bent Creek Boulevard, Suite 210, 
    Mechanicsburg, PA 
    Languages Spoken:
    English

    Donald S. Harper, MD, specializes in allergy and immunology. He is affiliated with UPMC Community Osteopathic, UPMC Carlisle, UPMC West Shore and UPMC Pinnacle Harrisburg. Dr. Harper completed his fellowship at Wilford Hall Medical Center, residency at Keesler Medical Center - Biloxi and medical degree at the University of Utah School of Medicine. Dr. Harper is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Allergic Conjunctivitis, and Grass Allergy.

    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology

    George R Gottlieb, MD

    2311 Henry Clower Boulevard, 
    Snellville, GA 
    Languages Spoken:
    English
    Accepting New Patients

    George Gottlieb is an Allergy and Immunologist practicing medicine in Snellville, Georgia. Dr. Gottlieb is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Serum Sickness, Exercise-Induced Anaphylaxis (EIA), Anaphylaxis, and Allergic Rhinitis. Dr. Gottlieb is board certified in American Board Of Allergy And Immunology and American Board Of Pediatrics. Dr. Gottlieb is currently accepting new patients.

    Advanced in Complement Component 2 Deficiency
    Pediatrics
    Advanced in Complement Component 2 Deficiency
    Pediatrics

    Andrew D Beaty MD PA

    4200 S Hulen St Ste 230, 
    Fort Worth, TX 
    Languages Spoken:
    English
    Offers Telehealth

    Susan Bailey is a Pediatrics provider practicing medicine in Fort Worth, Texas. Dr. Bailey is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Grass Allergy, Allergic Rhinitis, Sinusitis, and Complement Component 2 Deficiency.

    Advanced in Complement Component 2 Deficiency
    Pediatric Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Pediatric Allergy and Immunology

    Cleveland Clinic Main Campus

    2049 East 100th Street, 
    Cleveland, OH 
    Experience:
    36+ years
    Languages Spoken:
    English
    Offers Telehealth

    Fred Hsieh is a Pediatric Allergy and Immunologist practicing medicine in Cleveland, Ohio. He has been practicing medicine for over 36 years. Dr. Hsieh is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 28 other conditions, according to our data. His clinical expertise encompasses Hives, Urticaria Pigmentosa, Systemic Mastocytosis, and Chronic Spontaneous Urticaria (CSU). Dr. Hsieh is board certified in American Board Of Allergy And Immunology, 2001.

    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology

    Apex Allergy & Immunology

    534 Woods Lake Road, 
    Greenville, SC 
    Languages Spoken:
    English
    Accepting New Patients

    Charles Greene is an Allergy and Immunologist practicing medicine in Greenville, South Carolina. Dr. Greene is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Primary Immunodeficiency (PID), Sinusitis, Hives, and Allergic Rhinitis. Dr. Greene is currently accepting new patients.

    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology

    Allergy Associates, PA

    1403 Silverside Road, Suite 4B, Silverside Professional Park, 
    Wilmington, DE 
    Languages Spoken:
    English
    Offers Telehealth

    Michael Wydila is an Allergy and Immunologist practicing medicine in Wilmington, Delaware. Dr. Wydila is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Allergic Rhinitis, Grass Allergy, Allergic Conjunctivitis, and Sinusitis. Dr. Wydila is board certified in American Board Of Allergy And Immunology.

    Distinguished in Complement Component 2 Deficiency
    Allergy and Immunology
    Distinguished in Complement Component 2 Deficiency
    Allergy and Immunology

    Uc San Diego Health-La Jolla

    8899 University Center Ln, 
    San Diego, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Marc Riedl is an Allergy and Immunologist practicing medicine in San Diego, California. Dr. Riedl is rated as a Distinguished provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Hereditary Angioedema, Angioedema, Hives, Asthma, and Hormone Replacement Therapy (HRT).

    Distinguished in Complement Component 2 Deficiency
    Rheumatology
    Distinguished in Complement Component 2 Deficiency
    Rheumatology

    National Allergy Asthma & Urticaria Centers Of Charleston PA

    9165 University Blvd Ste 200, 
    North Charleston, SC 
    Languages Spoken:
    English

    Allen Kaplan is a Rheumatologist practicing medicine in North Charleston, South Carolina. Dr. Kaplan is rated as a Distinguished provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Hives, Angioedema, Chronic Spontaneous Urticaria (CSU), and Hereditary Angioedema.

    Distinguished in Complement Component 2 Deficiency
    Internal Medicine
    Distinguished in Complement Component 2 Deficiency
    Internal Medicine

    Cedars-Sinai Medical Center

    8700 Beverly Blvd, 
    West Hollywood, CA 
    Languages Spoken:
    English

    Neeka Shayan is a primary care provider, practicing in Internal Medicine in West Hollywood, California. Dr. Shayan is rated as a Distinguished provider by MediFind in the treatment of Complement Component 2 Deficiency. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Complement Component 2 Deficiency, Hyperphenylalaninemia Due to Dehydratase Deficiency, Episcleritis, Bone Marrow Aspiration, and Endoscopy.

    Distinguished in Complement Component 2 Deficiency
    Allergy and Immunology
    Distinguished in Complement Component 2 Deficiency
    Allergy and Immunology

    Innovative Allergy

    5001 Bissonnet St Ste 200, 
    Bellaire, TX 
    Languages Spoken:
    English
    Offers Telehealth

    Dat Tran is an Allergy and Immunologist practicing medicine in Bellaire, Texas. Dr. Tran is rated as a Distinguished provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Complement Component 2 Deficiency, Allergic Rhinitis, Sinusitis, and Grass Allergy.

    Distinguished in Complement Component 2 Deficiency
    Internal Medicine
    Distinguished in Complement Component 2 Deficiency
    Internal Medicine

    Gregory A Robertson MD A Professional Medical Corp.

    20311 SW Acacia St Ste 100, 
    Newport Beach, CA 
    Experience:
    44+ years
    Languages Spoken:
    English
    Offers Telehealth

    Gregory Robertson is a primary care provider, practicing in Internal Medicine in Newport Beach, California. He has been practicing medicine for over 44 years. Dr. Robertson is rated as a Distinguished provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Complement Component 2 Deficiency, Hyperphenylalaninemia Due to Dehydratase Deficiency, Thiopurine S-Methyltransferase Deficiency, Primary Immunodeficiency (PID), and Gastrostomy.

    Showing 1-20 of 899

    Last Updated: 04/28/2026

    What is the definition of Complement Component 2 Deficiency?

    Complement component 2 deficiency is a disorder that causes the immune system to malfunction, resulting in a form of immunodeficiency. Immunodeficiencies are conditions in which the immune system is not able to protect the body effectively from foreign invaders such as bacteria and viruses. People with complement component 2 deficiency have a significantly increased risk of recurrent bacterial infections, specifically of the lungs (pneumonia), the membrane covering the brain and spinal cord (meningitis), and the blood (sepsis), which may be life-threatening. These infections most commonly occur in infancy and childhood and become less frequent in adolescence and adulthood.

    When should I see a Complement Component 2 Deficiency 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 Complement Component 2 Deficiency 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 Complement Component 2 Deficiency 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 Complement Component 2 Deficiency 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 Complement Component 2 Deficiency 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 Complement Component 2 Deficiency doctor search results page. 

    Why is it important to get a second opinion from a different Complement Component 2 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 Complement Component 2 Deficiency 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 Complement Component 2 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 Complement Component 2 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 Complement Component 2 Deficiency doctors in The United States?

    Look for the filter feature on the left side of the Complement Component 2 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 Complement Component 2 Deficiency doctor that offers video calls?

    Look for the filter feature on the left-side of the Complement Component 2 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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