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Dr. Otto Liao, MD

Allergist & Immunologist, Pediatric Allergist & Immunologist

Tustin, CA

22 Years of Experience

Accepting patients

    Who is Dr. Liao, Allergist & Immunologist in Tustin, CA?

    Dr. Otto Liao, MD is an Allergist & Immunologist, who primarily practices in Tustin, CA with 2 additional practice locations. He has been practicing for over 22 years and is board certified. Dr. Liao graduated from UCLA David Geffen School of Medicine/UCLA Medical Center Program and completed his residency at Cedars-Sinai Medical Center. He is a member of the MemorialCare Physician Society. Dr. Liao is fluent in English and Spanish, and is currently seeing new patients. Dr. Liao’s practice accepts Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Liao’s office at (714) 838-2617.

    Where did Dr. Liao go to medical school and complete their residency?

    • Fellowship: University of California, Irvine | UCI | UC Irvine Medical Center: June 30 | Allergy & Immunology Fellowship: University of California, Irvine

    • Residency: Cedars-Sinai Medical Center

    • Medical School: UCLA David Geffen School of Medicine/UCLA Medical Center Program

    Is Dr. Liao board certified as an Allergist & Immunologist?

    Yes, Dr. Otto Liao, MD is board certified by the American Board of Allergy and Immunology , American Board of Pediatrics

    What languages does Dr. Liao speak?

    Dr. Liao and their clinical team can communicate with patients in the following languages:

    • English
    • Spanish

    What conditions does an Allergist & Immunologist like Dr. Liao typically treat?

    As an Allergist & Immunologist, Dr. Liao diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Liao. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.

    Also known as:

    • Allergic Rhinitis
    • Allergic Contact Dermatitis
    • Allergy
    • Rashes
    • Nasal allergy
    • Chronic allergy symptoms
    • Allergic reactions
    • Allergic skin rash
    • Contact allergy
    • Skin irritation from chemicals

    ICD-10 Codes:

    • J3089: Other allergic rhinitis
    • L235: Allergic contact dermatitis due to other chemical products

    Also known as:

    • Chronic Hives
    • Hives
    • Hives of unknown cause
    • Spontaneous urticaria
    • Persistent welts

    ICD-10 Codes:

    • L501: Idiopathic urticaria

    Also known as:

    • Other Food Allergy
    • Food Allergy
    • Unspecified Food Allergy
    • Multiple Food Allergies
    • Food Hypersensitivity

    ICD-10 Codes:

    • Z91018: Allergy to other foods

    Also known as:

    • Atopic Dermatitis
    • Eczema
    • Atopic dermatitis
    • Itchy skin rash
    • Allergic skin condition

    ICD-10 Codes:

    • L2089: Other atopic dermatitis

    Also known as:

    • Dermatitis
    • Eczema
    • Rashes
    • Atopic Dermatitis
    • Skin Inflammation
    • Skin Rash

    ICD-10 Codes:

    • L309: Dermatitis, unspecified

    Also known as:

    • Moderate Persistent Asthma
    • Asthma
    • Ongoing Moderate Asthma
    • Regular Moderate Asthma
    • Chronic Moderate Asthma

    ICD-10 Codes:

    • J4540: Moderate persistent asthma, uncomplicated

    What procedures does an Allergist & Immunologist like Dr. Liao typically perform?

    As an Allergist & Immunologist, procedures performed by Dr. Otto Liao may include:

    Please contact Dr. Liao's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.

    Does Dr. Liao accept my insurance?

    Dr. Liao accepts most major insurance plans. Important: Please call our office at (714) 838-2617 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Liao accept in Tustin, CA?

    Dr. Liao in Tustin, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Centene Corporation

    • CVS Health (formerly Aetna)

    • Hoag Memorial Hospital Presbyterian

    • Humana

    • Medicare

    • OptumRx Administered Payer

    • Other Health Care Provider

    • Other Provider Networks

    • St. Joseph Health System (CA)

    • UnitedHealth Group

    View All Insurances

    Where is Dr. Liao's office located?

    Dr. Otto Liao's Primary Practice

    1076 E 1st St Ste B

    Tustin, CA 92780

    (714) 838-2617

    Get Directions

    Dr. Otto Liao's Practice 2

    25401 Cabot Rd Ste 101

    Laguna Hills, CA 92653

    Get Directions

    Dr. Otto Liao's Practice 3

    1101 Bryan Ave Ste B

    Tustin, CA 92780

    Get Directions

    What hospitals are Dr. Liao affiliated with?

    Dr. Liao has admitting privileges at the following hospitals:

    Providence St. Joseph Hospital Orange,Orange, CA

    Recognitions

    Memberships & Associations

    MemorialCare Physician Society

    Member

    What is Dr. Liao's NPI number?A National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Liao's National Provider Identifier (NPI) number is 1225042674.

    What common questions do patients ask about Dr. Liao?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Liao

    What is Dr. Otto Liao's specialty?

    Dr. Liao is an Allergist & Immunologist near Tustin, CA.

    What does an Allergist & Immunologist do?

    An allergist-immunologist is well-versed in the assessment, physical examination, laboratory diagnosis, and treatment of immune system disorders. These conditions include, but are not limited to, eczema, asthma, anaphylaxis, rhinitis, and adverse reactions to food, medication, and insect stings. Furthermore, they manage immune deficiency diseases, whether acquired or congenital, issues with host defense, and challenges associated with autoimmune diseases, organ transplantation, or immune system malignancies.

    Is Dr. Otto Liao affiliated with a ranked Castle Connolly Top Hospital?

    No, Dr. Liao is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Providence St. Joseph Hospital Orange. Castle Connolly Top Hospitals are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    When to see an Allergist & Immunologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Allergist & Immunologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is Dr. Otto Liao accepting new patients in Tustin, CA?

    Yes, Dr. Otto Liao is accepting new patients at this time.

    Does Dr. Otto Liao offer online booking?

    Please contact Dr. Liao's office at (714) 838-2617 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. Otto Liao?

    Please contact Dr. Liao's office at (714) 838-2617 to schedule an appointment.

    Where is Dr. Liao's office located?

    Dr. Liao's offices are located in Tustin, CA and Laguna Hills, CA.

    Which board certifications does Dr. Otto Liao have?

    Dr. Otto Liao is certified by the American Board of Allergy and Immunology and American Board of Pediatrics.