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Dr. Justin Ko, MD

Dr. Justin Ko, MD

Redwood City, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Ko, Dermatologist in Redwood City, CA?

    Dr. Justin Ko, MD is a Dermatologist, who primarily practices in Redwood City, CA with 2 additional practice locations. He is board certified. Dr. Ko completed his residency at Harvard University Affiliated Hospitals. Dr. Ko is fluent in English, and is currently seeing new patients. Dr. Ko’s practice accepts Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Ko’s office at (650) 723-6316.

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

    • Residency: Harvard University Affiliated Hospitals | Massachusetts General Hospital

    Is Dr. Ko board certified as a Dermatologist?

    Yes, Dr. Justin Ko, MD is board certified by the American Board of Dermatology , American Board of Dermatology since 2012

    What languages does Dr. Ko speak?

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

    • English

    What conditions does Dr. Ko treat?

    As a Dermatologist, Dr. Ko 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. Ko. 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:

    • Vitiligo
    • Skin depigmentation
    • White patches on skin
    • Loss of skin color

    ICD-10 Codes:

    • L80: Vitiligo

    Also known as:

    • Skin Tumor of Uncertain Behavior
    • Skin Rash
    • Skin Condition
    • Rashes
    • Skin Neoplasm
    • Skin Growth
    • Uncertain Skin Lesion
    • Skin Eruption
    • Hives
    • Dermatitis
    • Skin Inflammation

    ICD-10 Codes:

    • D485: Neoplasm of uncertain behavior of skin
    • R21: Rash and other nonspecific skin eruption

    Also known as:

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

    ICD-10 Codes:

    • L409: Psoriasis, unspecified

    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:

    • Alopecia Areata
    • Non-Scarring Hair Loss
    • Hair Loss
    • Alopecia areata
    • Patchy hair loss
    • Autoimmune hair loss
    • Spot baldness
    • Reversible hair loss
    • Temporary baldness
    • Non-permanent hair thinning

    ICD-10 Codes:

    • L639: Alopecia areata, unspecified
    • L659: Nonscarring hair loss, 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:

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

    ICD-10 Codes:

    • L309: Dermatitis, unspecified

    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

    What procedures does Dr. Ko perform?

    As a Dermatologist, Dr. Ko performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Ko. 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:

    • Excimer Laser Treatment for Psoriasis (Small Area)
    • Excimer Laser Treatment for Psoriasis (Medium Area)
    • Excimer Laser Treatment for Psoriasis
    • Laser Psoriasis Treatment
    • UVB Laser for Psoriasis
    • Targeted Phototherapy for Psoriasis
    • Excimer Light Therapy
    • Laser Psoriasis Therapy
    • Psoriasis Light Therapy

    CPT Codes:

    • 96920: Excimer laser treatment for psoriasis; total area less than 250 sq cm
    • 96921: Excimer laser treatment for psoriasis; 250 sq cm to 500 sq cm
    • 96922: Excimer laser treatment for psoriasis; over 500 sq cm

    Also known as:

    • Ultraviolet Light Therapy
    • UV Light Treatment
    • Phototherapy
    • Actinotherapy
    • Light Box Therapy

    CPT Codes:

    • 96900: Actinotherapy (ultraviolet light)

    Also known as:

    • Removal of Precancerous Skin Lesions
    • Removal of Benign Skin Lesions
    • Skin Conditions
    • Actinic Keratosis Treatment
    • Premalignant Lesion Destruction
    • Skin Cancer Prevention Treatment
    • Cryosurgery for Skin Lesions
    • Benign Skin Growth Destruction
    • Skin Lesion Excision
    • Electrosurgery for Skin Lesions

    CPT Codes:

    • 17000: Destruction (eg, laser surgery, electrosurgery, cryosurgery, chemosurgery, surgical curettement), premalignant lesions (eg, actinic keratoses); first lesion
    • 17003: Destruction (eg, laser surgery, electrosurgery, cryosurgery, chemosurgery, surgical curettement), premalignant lesions (eg, actinic keratoses); second through 14 lesions, each (List separately in addition to code for first lesion)
    • 17110: Destruction (eg, laser surgery, electrosurgery, cryosurgery, chemosurgery, surgical curettement), of benign lesions other than skin tags or cutaneous vascular proliferative lesions; up to 14 lesions

    Also known as:

    • Injection for Skin Lesions (Up to 7)
    • Intralesional Injection
    • Lesion Injection Therapy
    • Steroid Injection for Skin Bumps

    CPT Codes:

    • 11900: Injection, intralesional; up to and including 7 lesions

    Also known as:

    • Skin Biopsy
    • Skin Biopsy (Punch)
    • Shave Biopsy
    • Tangential Biopsy
    • Skin Lesion Biopsy
    • Punch Biopsy
    • Dermal Punch Biopsy

    CPT Codes:

    • 11102: Tangential biopsy of skin (eg, shave, scoop, saucerize, curette); single lesion
    • 11104: Punch biopsy of skin (including simple closure, when performed); single lesion

    Does Dr. Ko accept my insurance?

    Dr. Ko accepts most major insurance plans. Important: Please call our office at (650) 723-6316 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Ko accept in Redwood City, CA?

    Dr. Ko in Redwood City, 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

    • Crown Cork and Seal Company

    • CVS Health (formerly Aetna)

    • Express Scripts

    • Medicaid

    • Medicare

    • Santa Clara Family Health Plan

    • State of Tennessee

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Ko's office located?

    Dr. Justin Ko's Primary Practice

    450 Broadway St

    Redwood City, CA 94063

    (650) 723-6316

    Get Directions

    Dr. Justin Ko's Practice 2

    450 Broadway St Ste MC5338

    Redwood City, CA 94063

    Get Directions

    Dr. Justin Ko's Practice 3

    300 Pasteur Dr

    Stanford, CA 94305

    Get Directions

    Recognitions

    Publications

    Randomized Controlled Trial of Cryotherapy With Liquid Nitrogen vs Topical Salicylic Acid vs Wait

    ARCHIVES OF DERMATOLOGY, 2012

    A Randomized, Prospective Trial Evaluating Surgeon Preference in Selection of Absorbable Suture

    JOURL OF DRUGS IN DERMATOLOGY, 2012

    A new era: melanoma genetics and therapeutics

    JOURL OF PATHOLOGY, 2011

    Pathways to Melanoma

    SEMIRS IN CUTANEOUS MEDICINE AND SURGERY, 2010

    Skin and bone: the pathogenetic relationship between psoriasis and psoriatic arthritis

    GIORLE ITALIANO DI DERMATOLOGIA E VENEREOLOGIA, 2010

    Paying for Enhanced Service Comparing Patients' Experiences in a Concierge

    PATIENT-PATIENT CENTERED OUTCOMES RESEARCH, 2009

    Induction and exacerbation of psoriasis with TNF-blockade therapy: A review and alysis of 127 cases

    JOURL OF DERMATOLOGICAL TREATMENT, 2009

    Prospective assessment of computer-aided detection in interpretation of screening mammography

    AMERICAN JOURL OF ROENTGENOLOGY, 2006

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

    Dr. Ko's National Provider Identifier (NPI) number is 1790912251.

    What common questions do patients ask about Dr. Ko?

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

    What is Dr. Justin Ko's specialty?

    Dr. Ko is a Dermatologist near Redwood City, 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. Ko to book an appointment today.

    Is this Dr. Justin Ko affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Ko is affiliated with Stanford Health Care - Stanford Hospital, San Mateo Medical Center which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They 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 Justin Ko accepting new patients in Redwood City, CA?

    Yes, Dr. Justin Ko is accepting new patients at this time.

    Does Dr. Justin Ko offer online booking?

    Please contact Dr. Ko's office at (650) 723-6316 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Justin Ko?

    Please contact Dr. Ko's office at (650) 723-6316 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Justin Ko have?

    Dr. Justin Ko is certified by the American Board of Dermatology.

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