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Dr. Catherine Nguyen, MD

Fullerton, CA

Accepting patients

    Who is Dr. Nguyen, Dermatologist in Fullerton, CA?

    Dr. Catherine Nguyen, MD is a Dermatologist, who primarily practices in Fullerton, CA with 2 additional practice locations. She is board certified. Dr. Nguyen is fluent in English, and is currently seeing new patients. Dr. Nguyen’s practice accepts Cigna, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Nguyen’s office.

    What languages does Dr. Nguyen speak?

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

    • English

    What conditions does Dr. Nguyen treat?

    As a Dermatologist, Dr. Nguyen 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. Nguyen. 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.

    Also known as:

    • Actinic Keratosis
    • Skin Condition
    • Sun Exposure
    • Skin Cancer Treatment (PDQ®)
    • Solar keratosis
    • Precancerous skin lesion
    • Rough sun spots

    ICD-10 Codes:

    • L570: Actinic keratosis

    Also known as:

    • Inflamed Seborrheic Keratosis
    • Benign Tumor
    • Skin Condition
    • Irritated seborrheic keratosis
    • Red skin growth
    • Inflamed age spot

    ICD-10 Codes:

    • L820: Inflamed seborrheic keratosis

    Also known as:

    • Skin Tumor of Uncertain Behavior
    • Thickened Skin Condition
    • Skin Condition
    • Skin Neoplasm
    • Skin Growth
    • Uncertain Skin Lesion
    • Skin hypertrophy
    • Hypertrophic skin disorder
    • Skin thickening

    ICD-10 Codes:

    • D485: Neoplasm of uncertain behavior of skin
    • L918: Other hypertrophic disorders of the skin

    Also known as:

    • Acne Vulgaris
    • Acne
    • Common acne
    • Pimples
    • Breakouts
    • Zits

    ICD-10 Codes:

    • L700: Acne vulgaris
    • L709: Acne, unspecified

    Also known as:

    • Other Long-Term Drug Therapy
    • Chronic medication use
    • Ongoing drug treatment
    • Extended drug therapy

    ICD-10 Codes:

    • Z79899: Other long term (current) drug therapy

    Also known as:

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

    ICD-10 Codes:

    • L309: Dermatitis, unspecified

    Also known as:

    • Moles
    • Birthmarks
    • Common Moles, Dysplastic Nevi, and Risk of Melanoma
    • Nevi
    • Beauty marks
    • Skin spots

    ICD-10 Codes:

    • D229: Melanocytic nevi, unspecified

    Also known as:

    • Psoriasis
    • Scaly Skin Condition
    • Chronic Skin Disease
    • Autoimmune Skin Disorder

    ICD-10 Codes:

    • L409: Psoriasis, unspecified

    Also known as:

    • Epidermal Cyst
    • Skin Condition
    • Sebaceous Cyst
    • Keratin Cyst
    • Epidermoid Cyst

    ICD-10 Codes:

    • L720: Epidermal cyst

    Also known as:

    • Seborrheic Dermatitis
    • Dandruff, Cradle Cap, and Other Scalp Condition
    • Dandruff
    • Cradle cap
    • Flaky skin condition

    ICD-10 Codes:

    • L219: Seborrheic dermatitis, unspecified

    Also known as:

    • Seborrheic Keratosis
    • Benign Tumor
    • Skin Condition
    • SK
    • Senile Wart
    • Barnacle of Life

    ICD-10 Codes:

    • L821: Other seborrheic keratosis

    Also known as:

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

    ICD-10 Codes:

    • L209: Atopic dermatitis, unspecified

    Also known as:

    • Hidradenitis Suppurativa
    • Hidradenitis Suppurativa (HS)
    • Acne Inversa', 'Verneuil's Disease
    • HS Skin Condition

    ICD-10 Codes:

    • L732: Hidradenitis suppurativa

    Also known as:

    • Benign Skin Tumor
    • Benign Tumor
    • Non-cancerous skin growths
    • Skin lesions
    • Benign skin masses

    ICD-10 Codes:

    • D239: Other benign neoplasm of skin, unspecified

    Also known as:

    • Scars
    • Hypertrophic Scarring
    • Keloid Scars
    • Scar Tissue

    ICD-10 Codes:

    • L910: Hypertrophic scar

    Also known as:

    • Depression Screening
    • Depression
    • Health Screening
    • Depression Test
    • Mental Health Check for Depression
    • Mood Disorder Screening

    ICD-10 Codes:

    • Z1331: Encounter for screening for depression

    Also known as:

    • Dark Skin Patches
    • Skin Pigmentation Disorder
    • Hyperpigmentation
    • Melasma
    • Age spots

    ICD-10 Codes:

    • L814: Other melanin hyperpigmentation

    Also known as:

    • Wart
    • Warts
    • Skin growth
    • Common wart
    • Verruca

    ICD-10 Codes:

    • B079: Viral wart, unspecified

    Does Dr. Nguyen accept my insurance?

    Dr. Nguyen accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Nguyen accept in Fullerton, CA?

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

    Top Insurances

    • All Other Third Party

    • Blue Shield of California

    • CalOptima

    • Centene

    • CVS Health (formerly Aetna)

    • Hoag Memorial Hospital Presbyterian

    • Medicare

    • Other Health Care Provider

    • St. Joseph Health System (CA)

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Nguyen's office located?

    Dr. Catherine Nguyen's Primary Practice

    1950 Sunny Crest Dr Ste 2900

    Fullerton, CA 92835

    Get Directions

    Dr. Catherine Nguyen's Practice 2

    100 E Valencia Mesa Dr Ste 105

    Fullerton, CA 92835

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    Dr. Catherine Nguyen's Practice 3

    2501 E Chapman Ave

    Orange, CA 92869

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

    Dr. Nguyen's National Provider Identifier (NPI) number is 1295199552.

    What common questions do patients ask about Dr. Nguyen?

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

    What is Dr. Catherine Nguyen's specialty?

    Dr. Nguyen is a Dermatologist near Fullerton, CA. Dermatologists are medical professionals trained to diagnose and treat a wide range of skin conditions in both children and adults, including skin cancers, melanomas, and other tumors. They also manage disorders of the mouth, external genitalia, hair, and nails, and are skilled in treating conditions like dermatitis, allergic reactions, and skin manifestations of systemic diseases. Dermatologists receive specialized training in dermatopathology and dermatologic surgical techniques, and address cosmetic issues such as hair loss and scarring. Additionally, they use laboratory methods to diagnose immune-related skin disorders, often collaborating with immunohematologists for expert consultation and targeted therapies. Contact Dr. Nguyen to book an appointment today.

    Is this Dr. Catherine Nguyen affiliated with a ranked Castle Connolly Top Hospital?

    No, Nguyen 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

    Where can I learn more about Dermatologist?

    Explore Dermatologist with 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 Catherine Nguyen accepting new patients in Fullerton, CA?

    Yes, Dr. Catherine Nguyen is accepting new patients at this time.

    Does Dr. Catherine Nguyen offer online booking?

    Please contact Dr. Nguyen's office for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Catherine Nguyen?

    Please contact Dr. Nguyen's office for information regarding telehealth appointment availability or for scheduling assistance.

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