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Dr. Johnathan Leung, MD

Covina, CA

Accepting patients

    Who is Dr. Leung, Pulmonologist in Covina, CA?

    Dr. Johnathan Leung, MD is a Pulmonologist, who primarily practices in Covina, CA with 1 additional practice location. He is board certified. Dr. Leung graduated from Tulane Univ School of Medicine. Dr. Leung is fluent in English and Chinese, and is currently seeing new patients. To book an appointment or to confirm insurance options, please call Dr. Leung’s office at (626) 251-1559.

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

    • Medical School: Tulane Univ School of Medicine

    What languages does Dr. Leung speak?

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

    • Chinese

    • English

    What conditions does Dr. Leung treat?

    As a Pulmonologist, Dr. Leung 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. Leung. 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:

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

    ICD-10 Codes:

    • J449: Chronic obstructive pulmonary disease, unspecified
    • J4489: Other specified chronic obstructive pulmonary disease

    Also known as:

    • Asthma
    • Asthma Flare-Up
    • Reactive Airway Disease
    • Bronchial Asthma
    • Allergic Asthma
    • Asthma Attack
    • Acute Asthma Exacerbation
    • Worsening Asthma
    • Asthma Episode

    ICD-10 Codes:

    • J45909: Unspecified asthma, uncomplicated
    • J45901: Unspecified asthma with (acute) exacerbation

    Also known as:

    • Obstructive Sleep Apnea
    • Sleep Apnea
    • Obstructive sleep apnea
    • OSA
    • Blocked airway during sleep
    • Snoring and gasping during sleep
    • Breathing Pauses During Sleep
    • Snoring Disorder

    ICD-10 Codes:

    • G4733: Obstructive sleep apnea (adult) (pediatric)
    • G4730: Sleep apnea, unspecified

    Also known as:

    • Bronchiectasis
    • Bronchial Disorder
    • Damaged Airways
    • Chronic Bronchial Dilation
    • Lung Airway Damage

    ICD-10 Codes:

    • J479: Bronchiectasis, uncomplicated

    Also known as:

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

    ICD-10 Codes:

    • R0600: Dyspnea, unspecified

    Also known as:

    • Other Abnormal Findings on Lung Scan
    • Single Lung Nodule
    • Lung Disease
    • Unusual Lung Scan Results
    • Atypical Lung Imaging
    • Nonspecific Lung Abnormality
    • Lung Spot
    • Pulmonary Nodule
    • Spot on Lung Scan

    ICD-10 Codes:

    • R918: Other nonspecific abnormal finding of lung field
    • R911: Solitary pulmonary nodule

    Also known as:

    • Allergic Rhinitis
    • Allergy
    • Nasal allergies
    • Allergy rhinitis
    • Chronic runny nose

    ICD-10 Codes:

    • J309: Allergic rhinitis, unspecified

    Also known as:

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

    ICD-10 Codes:

    • R053: Chronic cough

    Also known as:

    • Interstitial Lung Disease
    • ILD
    • Diffuse Parenchymal Lung Disease
    • Chronic Lung Disease

    ICD-10 Codes:

    • J849: Interstitial pulmonary disease, unspecified

    Also known as:

    • Cough
    • Coughing
    • Persistent cough
    • Chronic cough

    ICD-10 Codes:

    • R059: Cough, unspecified

    Also known as:

    • Sudden Airway Spasm
    • Bronchial Disorder
    • Acute airway constriction
    • Bronchial spasm
    • Sudden narrowing of airways

    ICD-10 Codes:

    • J9801: Acute bronchospasm

    Also known as:

    • Pleural Effusion
    • Pleural Disorder
    • Fluid in lungs
    • Water on the lung
    • Fluid around lungs

    ICD-10 Codes:

    • J90: Pleural effusion, not elsewhere classified

    Also known as:

    • Heart Failure
    • Congestive Heart Failure
    • CHF
    • Cardiac Insufficiency

    ICD-10 Codes:

    • I509: Heart failure, unspecified

    Also known as:

    • Pulmonary Fibrosis
    • Idiopathic pulmonary fibrosis
    • Lung Scarring
    • Fibrotic Lung Disease
    • Interstitial Pulmonary Fibrosis

    ICD-10 Codes:

    • J8410: Pulmonary fibrosis, unspecified

    Also known as:

    • Emphysema
    • Pulmonary Emphysema
    • Lung Emphysema
    • Chronic Obstructive Lung Disease

    ICD-10 Codes:

    • J439: Emphysema, unspecified

    Also known as:

    • Long COVID
    • COVID-19 (Coronavirus Disease 2019)
    • Post-COVID Syndrome
    • Long-Haul COVID
    • Chronic COVID

    ICD-10 Codes:

    • U099: Post COVID-19 condition, unspecified

    Does Dr. Leung accept my insurance?

    Dr. Leung accepts most major insurance plans. Important: Please call our office at (626) 251-1559 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Leung accept in Covina, CA?

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

    Top Insurances

    • Inland Empire

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    Where is Dr. Leung's office located?

    Dr. Johnathan Leung's Primary Practice

    420 W Rowland St

    Covina, CA 91723

    (626) 251-1559

    Get Directions

    Dr. Johnathan Leung's Practice 2

    415 W Carroll Ave Ste 100

    Glendora, CA 91741

    Get Directions

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

    Dr. Leung's National Provider Identifier (NPI) number is 1851349146.

    What common questions do patients ask about Dr. Leung?

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

    What is Dr. Johnathan Leung's specialty?

    Dr. Leung is a Pulmonologist near Covina, CA. 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. Contact Dr. Leung to book an appointment today.

    Is this Dr. Johnathan Leung affiliated with a ranked Castle Connolly Top Hospital?

    No, Leung is not affiliated with a Castle Connolly Top Hospital. 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 Pulmonologist?

    Explore Pulmonologist 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 Johnathan Leung accepting new patients in Covina, CA?

    Yes, Dr. Johnathan Leung is accepting new patients at this time.

    Does Dr. Johnathan Leung offer online booking?

    Please contact Dr. Leung's office at (626) 251-1559 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Johnathan Leung?

    Please contact Dr. Leung's office at (626) 251-1559 for information regarding telehealth appointment availability or for scheduling assistance.

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