The 20 Best Complement Component 2 Deficiency Doctors Near Me in tustin, CA

Find the Top Complement Component 2 Deficiency Experts and Specialists

Last Updated: 09/26/2026

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

MediFind found 20 doctor with experience in Complement Component 2 Deficiency near tustin, CA. Of these, 17 are Experienced, 2 are Advanced and 1 are Distinguished.

Location
LocationClose
20 providers found
    Experienced in Complement Component 2 Deficiency
    Allergy and Immunology
    Experienced in Complement Component 2 Deficiency
    Allergy and Immunology
    Referral may be required
    1140 West La Veta Avenue, Suite 850, 
    Orange, CA 
     (3.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    William Harris is an Allergy and Immunologist practicing medicine in Orange, California. Dr. Harris is rated as an Experienced 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 Hives, Sinusitis, Grass Allergy, and Allergic Rhinitis. Dr. Harris is board certified in American Board Of Allergy & Immunology. Dr. Harris is currently accepting new patients.

    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 
     (8.0 miles away)
    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 Thiopurine S-Methyltransferase Deficiency, Hyperphenylalaninemia Due to Dehydratase Deficiency, Complement Component 2 Deficiency, Primary Immunodeficiency (PID), and Gastrostomy.

    Experienced in Complement Component 2 Deficiency
    Allergy and Immunology | Pediatrics
    Experienced in Complement Component 2 Deficiency
    Allergy and Immunology | Pediatrics
    Referral may be required

    Tlc Allergy And Asthma Assoc Inc

    1076 E 1st St, 
    Tustin, CA 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Otto Liao is an Allergy and Immunologist and a Pediatrics provider practicing medicine in Tustin, California. Dr. Liao is rated as an Experienced 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 Allergic Rhinitis, Sinusitis, Allergic Conjunctivitis, and Conjunctivitis (Pink Eye). Dr. Liao is board certified in American Board Of Allergy & Immunology. Dr. Liao is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Alan C Schwartz

    2621 S Bristol St, 
    Santa Ana, CA 
     (4.1 miles away)
    Languages Spoken:
    English

    Alan Schwartz is a primary care provider, practicing in Internal Medicine in Santa Ana, California. Dr. Schwartz is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. His clinical expertise encompasses Sepsis, Pneumonia, Hospital-Acquired Pneumonia, Bone Marrow Aspiration, and Gastrostomy. Dr. Schwartz is board certified in American Board Of Internal Medicine.

    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Advanced in Complement Component 2 Deficiency
    Allergy and Immunology
    Referral may be required

    Gottschalk Medical Plaza

    1 Medical Plaza Drive, 
    Irvine, CA 
     (6.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Donald Levy is an Allergy and Immunologist practicing medicine in Irvine, California. Dr. Levy 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 Hives, Angioedema, Hereditary Angioedema, and Grass Allergy. Dr. Levy is board certified in American Board Of Pediatrics - Pediatrics, American Board Of Allergy And Immunology - Allergy And Immunology, and American Board Of Allergy & Immunology. Dr. Levy is currently accepting new patients.

    Advanced in Complement Component 2 Deficiency
    Internal Medicine
    Advanced in Complement Component 2 Deficiency
    Internal Medicine

    Office

    17360 Brookhurst St, 
    Fountain Valley, CA 
     (7.7 miles away)
    Languages Spoken:
    English

    Kimberly Motta is a primary care provider, practicing in Internal Medicine in Fountain Valley, California. Dr. Motta is rated as an Advanced provider by MediFind in the treatment of Complement Component 2 Deficiency. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Properdin Deficiency, Thiopurine S-Methyltransferase Deficiency, Hyperphenylalaninemia Due to Dehydratase Deficiency, Gastrostomy, and Hip Replacement.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Hospital Irvine

    16200 Sand Canyon Ave, 
    Irvine, CA 
     (6.3 miles away)
    Languages Spoken:
    English

    David Liao is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Liao is rated as an Experienced 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 Pneumonia, Sepsis, Ogilvie Syndrome, Endoscopy, and Colonoscopy.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Hospital Irvine

    16200 Sand Canyon Ave, 
    Irvine, CA 
     (6.3 miles away)
    Languages Spoken:
    English

    Yi Tang is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Tang is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Episcleritis, Pneumonia, Sepsis, Gastrostomy, and Bone Marrow Aspiration.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Office

    6789 Quail Hill Pkwy, 
    Irvine, CA 
     (6.6 miles away)
    Languages Spoken:
    English

    Roshny Pattathu is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Pattathu is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Ogilvie Syndrome, Biliary Atresia, Sepsis, Endoscopy, and Gastrostomy.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    William N Sokol JR M D Inc

    400 Newport Center Dr Ste 406, 
    Newport Beach, CA 
     (8.0 miles away)
    Languages Spoken:
    English

    William Jr is a primary care provider, practicing in Internal Medicine in Newport Beach, California. Dr. Jr is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Sinusitis, Autosomal Dominant Hyper IgE Syndrome, Hyper IgE Syndrome, and Empyema.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Memorial Hospital Presbyterian

    1 Hoag Dr, 
    Newport Beach, CA 
     (10.2 miles away)
    Languages Spoken:
    English

    Gene Mizumoto is a primary care provider, practicing in Internal Medicine in Newport Beach, California. Dr. Mizumoto is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Sepsis, Stroke, Ogilvie Syndrome, Gastrostomy, and Endoscopy.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Memorial Hospital Presbyterian

    1 Hoag Dr, 
    Newport Beach, CA 
     (10.2 miles away)
    Languages Spoken:
    English

    Viet Huynh is a primary care provider, practicing in Internal Medicine in Newport Beach, California. Dr. Huynh is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Sepsis, Acute Pancreatitis, Gastrointestinal Bleeding, Endoscopy, and Hip Replacement.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Memorial Hospital Presbyterian

    1 Hoag Dr, 
    Newport Beach, CA 
     (10.2 miles away)
    Languages Spoken:
    English

    Kenneth Su is a primary care provider, practicing in Internal Medicine in Newport Beach, California. Dr. Su is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Sepsis, Acute Kidney Failure, Peptic Ulcer, Pneumonia, and Gastrostomy.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Memorial Hospital Presbyterian

    1 Hoag Dr, 
    Newport Beach, CA 
     (10.2 miles away)
    Languages Spoken:
    English

    Vuanh Truong is a primary care provider, practicing in Internal Medicine in Newport Beach, California. Dr. Truong is rated as an Experienced 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 Sepsis, Stroke, Gastrointestinal Bleeding, Gastrostomy, and Endoscopy.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Memorial Hospital Presbyterian

    1 Hoag Dr, 
    Newport Beach, CA 
     (10.2 miles away)
    Languages Spoken:
    English

    Janie Liao is a primary care provider, practicing in Internal Medicine in Newport Beach, California. Dr. Liao is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Ogilvie Syndrome, Sepsis, Malnutrition, Endoscopy, and Bone Marrow Aspiration.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Memorial Hospital Presbyterian

    1 Hoag Dr, 
    Newport Beach, CA 
     (10.2 miles away)
    Languages Spoken:
    English

    Shawna Rinker is a primary care provider, practicing in Internal Medicine in Newport Beach, California. Dr. Rinker is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Sepsis, Ogilvie Syndrome, Pneumonia, Gastrostomy, and Endoscopy.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Memorial Hospital Presbyterian

    1 Hoag Dr, 
    Newport Beach, CA 
     (10.2 miles away)
    Languages Spoken:
    English

    Michael Eilbert is a primary care provider, practicing in Internal Medicine in Newport Beach, California. Dr. Eilbert is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Multisystem Inflammatory Syndrome in Children (MIS-C), COVID-19, Sepsis, Gastrostomy, and Endoscopy.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Hoag Memorial Hospital Presbyterian

    1 Hoag Dr, 
    Newport Beach, CA 
     (10.2 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English

    Michael Gray is a primary care provider, practicing in Internal Medicine in Newport Beach, California. He has been practicing medicine for over 18 years. Dr. Gray is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Sepsis, Ogilvie Syndrome, Gastrointestinal Bleeding, and Acute Pancreatitis.

    Experienced in Complement Component 2 Deficiency
    Internal Medicine
    Experienced in Complement Component 2 Deficiency
    Internal Medicine

    Laguna Hills Health And Rehabilitation Center

    24452 Health Center Dr, 
    Laguna Hills, CA 
     (11.5 miles away)
    Languages Spoken:
    English

    Derrick Hong is a primary care provider, practicing in Internal Medicine in Laguna Hills, California. Dr. Hong is rated as an Experienced provider by MediFind in the treatment of Complement Component 2 Deficiency. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Pneumonia, Sepsis, Ogilvie Syndrome, Gastrostomy, and Colonoscopy.

    Experienced in Complement Component 2 Deficiency
    Allergy and Immunology
    Experienced in Complement Component 2 Deficiency
    Allergy and Immunology
    Referral may be required
    955 West Imperial Highway, Suite 110, 
    Brea, CA 
     (13.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Alfred Moon is an Allergy and Immunologist practicing medicine in Brea, California. Dr. Moon is rated as an Experienced 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 Allergic Rhinitis, Sinusitis, Hives, and Exercise-Induced Anaphylaxis (EIA). Dr. Moon is currently accepting new patients.

    Showing 1-20 of 20

    Last Updated: 09/26/2026

    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 near tustin, 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 Complement Component 2 Deficiency doctor near tustin, 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 does MediFind rank Complement Component 2 Deficiency doctors near tustin, 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 Complement Component 2 Deficiency doctors near tustin, 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 Complement Component 2 Deficiency doctor near tustin, 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 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 near tustin, 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 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 near tustin, CA?

    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 

    Read more about our Content Policy. 

    More Complement Component 2 Deficiency Doctors by city