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Dr. William Chang, DO

San Juan Capistrano, CA

23 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Chang, Pulmonologist in San Juan Capistrano, CA?

    Dr. William Chang, DO is a Pulmonologist, who primarily practices in San Juan Capistrano, CA with 2 additional practice locations. He has been practicing for over 23 years. Dr. Chang is fluent in English and Chinese, and is currently seeing new patients. Dr. Chang’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Chang’s office at (714) 571-5000.

    What languages does Dr. Chang speak?

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

    • Chinese

    • English

    What conditions does a Pulmonologist like Dr. Chang typically treat?

    As a Pulmonologist, Dr. Chang 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. Chang. 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 here.

    Also known as:

    • Obstructive Sleep Apnea
    • Sleep Apnea
    • Obstructive sleep apnea
    • OSA
    • Blocked airway during sleep
    • Snoring and gasping during sleep

    ICD-10 Codes:

    • G4733: Obstructive sleep apnea (adult) (pediatric)

    Also known as:

    • Asthma
    • Reactive Airway Disease
    • Bronchial Asthma
    • Allergic Asthma

    ICD-10 Codes:

    • J45909: Unspecified asthma, uncomplicated

    Also known as:

    • COPD
    • Chronic Obstructive Pulmonary Disease
    • Chronic Lung Disease
    • Emphysema and Chronic Bronchitis

    ICD-10 Codes:

    • J449: Chronic obstructive pulmonary disease, unspecified

    Also known as:

    • Single Lung Nodule
    • Lung Disease
    • Lung Spot
    • Pulmonary Nodule
    • Spot on Lung Scan

    ICD-10 Codes:

    • R911: Solitary pulmonary nodule

    Also known as:

    • Shortness of Breath
    • Breathing Problems
    • Difficulty breathing
    • Breathlessness
    • Dyspnea

    ICD-10 Codes:

    • R0602: Shortness of breath

    Also known as:

    • Snoring
    • Loud breathing during sleep
    • Noisy sleep
    • Obstructive snoring

    ICD-10 Codes:

    • R0683: Snoring

    Also known as:

    • Cough
    • Coughing
    • Persistent cough
    • Chronic cough

    ICD-10 Codes:

    • R059: Cough, unspecified

    Also known as:

    • Chronic Cough
    • Cough
    • Persistent cough
    • Long-lasting cough
    • Ongoing cough

    ICD-10 Codes:

    • R053: Chronic cough

    Does Dr. Chang accept my insurance?

    Dr. Chang accepts most major insurance plans. Important: Please call our office at (714) 571-5000 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Chang accept in San Juan Capistrano, CA?

    Dr. Chang in San Juan Capistrano, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Alignment Healthcare

    • All Other Third Party

    • Centene Corporation

    • Humana

    • Medicare

    • Other Health Care Provider

    • St. Joseph Health System (CA)

    • State of California

    • UnitedHealth Group

    • Unknown

    View All Insurances

    Where is Dr. Chang's office located?

    Dr. William Chang's Primary Practice

    30230 Rancho Viejo Rd Ste 200

    San Juan Capistrano, CA 92675

    (714) 571-5000

    Get Directions

    Dr. William Chang's Practice 2

    1 City Blvd W

    Orange, CA 92868

    Get Directions

    Dr. William Chang's Practice 3

    23141 Moulton Pkwy Ste 108

    Laguna Hills, CA 92653

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

    Dr. Chang's National Provider Identifier (NPI) number is 1417902149.

    What common questions do patients ask about Dr. Chang?

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

    What is Dr. William Chang's specialty?

    Dr. Chang is a Pulmonologist near San Juan Capistrano, CA.

    What does a Pulmonologist do?

    An internist specializing in the treatment of lung and airway diseases. The pulmonologist diagnoses and manages conditions such as cancer, pneumonia, pleurisy, asthma, occupational and environmental illnesses, bronchitis, sleep disorders, emphysema, and other complex lung disorders.

    Is this Dr. William Chang affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Chang is affiliated with Providence Mission Hospital Mission Viejo, Hoag Hospital Newport Beach, Kaiser Permanente Orange County - Anaheim Medical Center, Uci Medical Center, Ahmc Anaheim Regional 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

    When to see a Pulmonologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Pulmonologist. 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 William Chang accepting new patients in San Juan Capistrano, CA?

    Yes, Dr. William Chang is accepting new patients at this time.

    Does Dr. William Chang offer online booking?

    Please contact Dr. Chang's office at (714) 571-5000 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with William Chang?

    Please contact Dr. Chang's office at (714) 571-5000 for information regarding telehealth appointment availability or for scheduling assistance.

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