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Dr. Leigh Chao, MD

Emergency Medicine Specialist

Alton, IL

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Chao, Emergency Medicine Specialist in Alton, IL?

    Dr. Leigh Chao, MD is an Emergency Medicine Specialist, who primarily practices in Alton, IL with 2 additional practice locations. He is board certified. Dr. Chao completed his residency at St Louis Univ Sch Of Med, Internal Medicine; Creighton Univ Sch Of Med, General Surgery. Dr. Chao is fluent in English, and is currently seeing new patients. Dr. Chao’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Chao’s office at (314) 768-8000.

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

    • Residency: St Louis Univ Sch Of Med, Internal Medicine; Creighton Univ Sch Of Med, General Surgery

    • Medical School: St Louis Univ Sch of Med, St Louis Mo

    Is Dr. Chao board certified as an Emergency Medicine Specialist?

    Yes, Dr. Leigh Chao, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Chao speak?

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

    • English

    What conditions does an Emergency Medicine Specialist like Dr. Chao typically treat?

    As an Emergency Medicine Specialist, Dr. Chao 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. Chao. 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:

    • Sepsis
    • Blood Poisoning
    • Septicemia
    • Systemic Bacterial Infection

    ICD-10 Codes:

    • A419: Sepsis, unspecified organism

    Also known as:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Upper body pain

    ICD-10 Codes:

    • R079: Chest pain, unspecified

    Also known as:

    • Fainting
    • Syncope
    • Passing out
    • Collapse

    ICD-10 Codes:

    • R55: Syncope and collapse

    Also known as:

    • Abdominal Pain
    • Stomach Ache
    • Belly Pain
    • Stomach Pain

    ICD-10 Codes:

    • R109: Unspecified abdominal pain

    Also known as:

    • Changes in Mental State
    • Mental Disorder
    • Confusion
    • Disorientation
    • Changes in awareness

    ICD-10 Codes:

    • R4182: Altered mental status, unspecified

    Also known as:

    • COPD Flare-Up
    • COPD
    • COPD Exacerbation
    • Chronic Obstructive Pulmonary Disease Flare-Up
    • Worsening COPD
    • COPD Attack

    ICD-10 Codes:

    • J441: Chronic obstructive pulmonary disease with (acute) exacerbation

    Also known as:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Pectoral pain

    ICD-10 Codes:

    • R0789: Other chest pain

    Also known as:

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

    ICD-10 Codes:

    • R0602: Shortness of breath

    Also known as:

    • Dizziness
    • Dizziness and Vertigo
    • Lightheadedness
    • Giddiness
    • Vertigo

    ICD-10 Codes:

    • R42: Dizziness and giddiness

    Also known as:

    • Muscle Weakness
    • Muscle Disorder
    • Loss of strength
    • Fatigue
    • Muscle fatigue

    ICD-10 Codes:

    • R531: Weakness

    What procedures does an Emergency Medicine Specialist like Dr. Chao typically perform?

    As an Emergency Medicine Specialist, procedures performed by Dr. Leigh Chao may include:

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

    Does Dr. Chao accept my insurance?

    Dr. Chao accepts most major insurance plans. Important: Please call our office at (314) 768-8000 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Chao accept in Alton, IL?

    Dr. Chao in Alton, IL accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Centene

    • Centene Corporation

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • Federal government of the United States

    • Humana

    • Medicare

    • State of Illinois

    • State of Missouri

    • UnitedHealth Group

    View All Insurances

    Where is Dr. Chao's office located?

    St Anthonys Health Center

    1 Saint Anthonys Way

    Alton, IL 62002

    (314) 768-8000

    Get Directions

    Dr. Leigh Chao's Practice 2

    1 Good Samaritan Way

    Mount Vernon, IL 62864

    Get Directions

    Dr. Leigh Chao's Practice 3

    1900 State St

    Chester, IL 62233

    Get Directions

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

    Dr. Chao's National Provider Identifier (NPI) number is 1922081348.

    What common questions do patients ask about Dr. Chao?

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

    What is Dr. Leigh Chao's specialty?

    Dr. Chao is an Emergency Medicine Specialist near Alton, IL.

    What does an Emergency Medicine Specialist do?

    An emergency physician is dedicated to making prompt decision and taking necessary actions essential for preventing death or additional disabilities. This role encompasses guiding emergency medical technicians in pre-hospital environments as well as providing care within the emergency department. The emergency physician is responsible for the immediate identification, evaluation, treatment, stabilization, and arrangement of a diverse array of adult and pediatric patients facing acute illnesses and injuries.

    Is Dr. Leigh Chao affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Chao is affiliated with Christian Hospital, Christian Hospital, Mercy Hospital Southeast, Anderson Hospital, Missouri Baptist 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 an Emergency Medicine Specialist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Emergency Medicine Specialist. 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. Leigh Chao accepting new patients in Alton, IL?

    Yes, Dr. Leigh Chao is accepting new patients at this time.

    Does Dr. Leigh Chao offer online booking?

    Please contact Dr. Chao's office at (314) 768-8000 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. Leigh Chao?

    Please contact Dr. Chao's office at (314) 768-8000 to schedule an appointment.

    Where is Dr. Chao's office located?

    Dr. Chao's offices are located in Alton, IL, Mount Vernon, IL, and Chester, IL.

    Which board certifications does Dr. Leigh Chao have?

    Dr. Leigh Chao is certified by the American Board of Internal Medicine.