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Dr. Mark Day, DO

Portland, OR

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Day, Cardiologist in Portland, OR?

    Dr. Mark Day, DO is a Cardiologist, who primarily practices in Portland, OR with 2 additional practice locations. He is board certified. Dr. Day is fluent in English, and is currently seeing new patients. Dr. Day’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Day’s office at (503) 413-4488.

    What languages does Dr. Day speak?

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

    • English

    What conditions does Dr. Day treat?

    As a Cardiologist, Dr. Day 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. Day. 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:

    • Heart Palpitations
    • Atrial Fibrillation
    • Arrhythmia
    • Skipped Heartbeat
    • Fluttering Heart
    • Pounding Heart
    • Afib
    • A-fib
    • Irregular heart rhythm

    ICD-10 Codes:

    • R002: Palpitations
    • I480: Paroxysmal atrial fibrillation
    • I4891: Unspecified atrial fibrillation

    Also known as:

    • Other Pre-Procedure Examination
    • Various pre-op checks
    • Miscellaneous pre-surgery exams
    • Other pre-treatment assessments

    ICD-10 Codes:

    • Z01818: Encounter for other preprocedural examination

    Also known as:

    • Hardening of the Arteries in the Heart without Chest Pain
    • Atherosclerosis
    • Coronary Artery Disease
    • Silent Coronary Artery Disease
    • Asymptomatic Atherosclerosis

    ICD-10 Codes:

    • I2510: Atherosclerotic heart disease of native coronary artery without angina pectoris

    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

    Which procedures does Dr. Day perform as a Cardiologist?

    As a Cardiologist, procedures performed by a Dr. Mark Day may include:

    For detailed information, please contact Dr. Day's office.

    Does Dr. Day accept my insurance?

    Dr. Day accepts most major insurance plans. Important: Please call our office at (503) 413-4488 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Day accept in Portland, OR?

    Dr. Day in Portland, OR accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • California Foundation for Medical Care

    • Cambia (Regence)

    • Crown Cork and Seal Company

    • Express Scripts

    • Kaiser Permanente

    • Medicare

    • Molina

    • State of Tennessee

    • Yamhill Community Care

    View All Insurances

    Where is Dr. Day's office located?

    Dr. Mark Day's Primary Practice

    501 N Graham St Ste 200

    Portland, OR 97227

    (503) 413-4488

    Get Directions

    Dr. Mark Day's Practice 2

    1040 NW 22nd Ave Ste 660

    Portland, OR 97210

    Get Directions

    Dr. Mark Day's Practice 3

    3600 NW Samaritan Dr

    Corvallis, OR 97330

    Get Directions

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

    Dr. Day's National Provider Identifier (NPI) number is 1225492796.

    What common questions do patients ask about Dr. Day?

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

    What is Dr. Mark Day's specialty?

    Dr. Day is a Cardiologist near Portland, OR. An internist specializing in cardiovascular diseases focuses on the diagnosis and management of complex heart and blood vessel conditions, including heart attacks and life-threatening arrhythmias. Contact Dr. Day to book an appointment today.

    Is this Dr. Mark Day affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Day is affiliated with Legacy Mount Hood Medical Center, Legacy Emanuel Medical Center, Legacy Salmon Creek Medical Center, Legacy Good Samaritan Medical Center, Kaiser Permanente Sunnyside 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 Cardiologist?

    Explore Cardiologist 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 Mark Day accepting new patients in Portland, OR?

    Yes, Dr. Mark Day is accepting new patients at this time.

    Does Dr. Mark Day offer online booking?

    Please contact Dr. Day's office at (503) 413-4488 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Mark Day?

    Please contact Dr. Day's office at (503) 413-4488 for information regarding telehealth appointment availability or for scheduling assistance.

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