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Dr. Michael Brennan, DO

Critical Care Internist

Oak Park, IL

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Brennan, Critical Care Internist in Oak Park, IL?

    Dr. Michael Brennan, DO is a Critical Care Internist, who primarily practices in Oak Park, IL with 2 additional practice locations. Dr. Brennan is fluent in English, and is currently seeing new patients. Dr. Brennan’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Brennan’s office at (708) 660-6665.

    What languages does Dr. Brennan speak?

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

    • English

    What conditions does a Critical Care Internist like Dr. Brennan typically treat?

    As a Critical Care Internist, Dr. Brennan 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. Brennan. 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:

    • Viral Infection
    • Virus Infection
    • Viral Illness
    • Common Virus

    ICD-10 Codes:

    • B349: Viral infection, unspecified

    Also known as:

    • Non-Infectious Gastroenteritis and Colitis
    • Digestive Disease
    • Inflammation of Stomach and Intestines
    • Non-Bacterial Colitis
    • Gut Inflammation

    ICD-10 Codes:

    • K529: Noninfective gastroenteritis and colitis, unspecified

    What procedures does a Critical Care Internist like Dr. Brennan typically perform?

    As a Critical Care Internist, procedures performed by Dr. Michael Brennan may include:

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

    Does Dr. Brennan accept my insurance?

    Dr. Brennan accepts most major insurance plans. Important: Please call our office at (708) 660-6665 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Brennan accept in Oak Park, IL?

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

    Top Insurances

    • Blue Cross Blue Shield of Minnesota

    • Centene

    • Centene Corporation

    • Cigna Group

    • CVS Health (formerly Aetna)

    • Federal government of the United States

    • Humana

    • Medicare

    • Molina Healthcare

    • State of Illinois

    View All Insurances

    Where is Dr. Brennan's office located?

    Dr. Michael Brennan's Primary Practice

    520 S Maple Ave

    Oak Park, IL 60304

    (708) 660-6665

    Get Directions

    Dr. Michael Brennan's Practice 2

    100 E Le Fevre Rd

    Sterling, IL 61081

    Get Directions

    Dr. Michael Brennan's Practice 3

    1620 W Harrison St

    Chicago, IL 60612

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    What hospitals are Dr. Brennan affiliated with?

    CastleConnolyTopDoctors

    Castle Connolly Top Hospital

    This doctor is affiliated with a Castle Connolly Top Hospital.

    Dr. Brennan has admitting privileges at the following hospitals:

    Advocate South Suburban Hospital,Hazel Crest, IL
    Advocate Christ Medical Center,Oak Lawn, IL
    Rush Oak Park Hospital,Oak Park, IL
    Sinai Health System - Holy Cross Hospital,Chicago, IL
    Uchicago Medicine,Chicago, IL

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

    Dr. Brennan's National Provider Identifier (NPI) number is 1811550981.

    What common questions do patients ask about Dr. Brennan?

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

    What is Dr. Michael Brennan's specialty?

    Dr. Brennan is a Critical Care Internist near Oak Park, IL.

    What does a Critical Care Internist do?

    An internist specializing in the diagnosis, treatment, and support of patients with multiple organ dysfunction. This specialist may hold administrative responsibilities within intensive care units and plays a key role in facilitating and coordinating patient care among primary physicians, critical care staff, and other specialists.

    Is Dr. Michael Brennan affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Brennan is affiliated with Riverside Medical Center - Kankakee, Il which is a Castle Connolly Top Hospital. 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 Critical Care Internist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Critical Care Internist. 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. Michael Brennan accepting new patients in Oak Park, IL?

    Yes, Dr. Michael Brennan is accepting new patients at this time.

    Does Dr. Michael Brennan offer online booking?

    Please contact Dr. Brennan's office at (708) 660-6665 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. Michael Brennan?

    Please contact Dr. Brennan's office at (708) 660-6665 to schedule an appointment.

    Where is Dr. Brennan's office located?

    Dr. Brennan's offices are located in Oak Park, IL, Sterling, IL, and Chicago, IL.