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Dr. Catherine O'neill, MD

Buffalo, NY

31 Years of Experience

Accepting patients

    Who is Dr. O'neill, Internist in Buffalo, NY?

    Dr. Catherine O'neill, MD is an Internist, who primarily practices in Buffalo, NY. She has been practicing for over 31 years and is board certified. Dr. O'neill is fluent in English, Spanish, and Ukrainian, and is currently seeing new patients. Dr. O'neill’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. O'neill’s office at (716) 859-2175.

    What are Areas of Expertise for Dr. O'neill?

    Dr. Catherine O'neill, MD is a highly-rated, board-certified Internist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. O'neill empowers patients to confidently navigate their health journey, specializing in Primary Care, or comprehensive wellness support. Serving the Buffalo/NY community, Dr. O'neill is dedicated to enhancing lives through expert, patient-centered care.

    Where did Dr. O'neill go to medical school and complete their residency?

    • Medical School: Suny-Hlth Sci Ctr At Syracuse, Coll of Med, Syracuse Ny

    Is Dr. O'neill board certified as an Internist?

    Yes, Dr. Catherine O'neill, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. O'neill speak?

    Dr. O'neill and their clinical team can communicate with patients in the following languages:

    • English

    • Spanish

    • Ukrainian

    What conditions does Dr. O'neill treat?

    As an Internist, Dr. O'neill 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. O'neill. 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:

    • Adult Health Checkup with Abnormal Findings
    • Special Medical Examination
    • Health Checkup
    • Adult Physical Exam with Issues
    • Routine Checkup with Concerns
    • General Medical Exam with Abnormal Results
    • Specific health check
    • Detailed medical assessment
    • Special health screening

    ICD-10 Codes:

    • Z0001: Encounter for general adult medical examination with abnormal findings
    • Z0189: Encounter for other specified special examinations

    Also known as:

    • High Blood Pressure
    • Hypertension
    • Primary Hypertension
    • Essential Hypertension

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Immunization Visit
    • Vaccines
    • Vaccination appointment
    • Shot visit
    • Immunization encounter

    ICD-10 Codes:

    • Z23: Encounter for immunization

    Also known as:

    • Type 2 Diabetes
    • Diabetes Type 2
    • Type 2 diabetes
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes

    ICD-10 Codes:

    • E119: Type 2 diabetes mellitus without complications

    Also known as:

    • Routine Adult Health Checkup
    • Health Checkup
    • Adult physical exam
    • Annual wellness visit for adults
    • General adult medical exam

    ICD-10 Codes:

    • Z0000: Encounter for general adult medical examination without abnormal findings

    Also known as:

    • Sleep Apnea
    • Breathing Pauses During Sleep
    • Snoring Disorder

    ICD-10 Codes:

    • G4730: Sleep apnea, unspecified

    Also known as:

    • Low Back Pain
    • Back Pain
    • Lumbago
    • Lower Back Ache
    • Backache

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Neck Pain
    • Neck Injuries and Disorder
    • Cervical Pain
    • Sore Neck
    • Neck Ache

    ICD-10 Codes:

    • M542: Cervicalgia

    Which procedures does Dr. O'neill perform as an Internist?

    As an Internist, procedures performed by Dr. Catherine O'neill may include:

    For detailed information, please contact Dr. O'neill's office.

    Does Dr. O'neill accept my insurance?

    Dr. O'neill accepts most major insurance plans. Important: Please call our office at (716) 859-2175 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. O'neill accept in Buffalo, NY?

    Dr. O'neill in Buffalo, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • CVS Health (formerly Aetna)

    • Department of Defense / Tricare

    • Department of Veterans Affairs

    • Express Scripts

    • HealthNow New York

    • Independent Health

    • Medicare

    • State of Tennessee

    • UnitedHealthcare

    View All Insurances

    Where is Dr. O'neill's office located?

    Dr. Catherine O'neill's Primary Practice

    100 High St

    Buffalo, NY 14203

    (716) 859-2175

    Get Directions

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

    Dr. O'neill's National Provider Identifier (NPI) number is 1992745194.

    What common questions do patients ask about Dr. O'neill?

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

    What is Dr. Catherine O'neill's specialty?

    Dr. O'neill is a Internist near Buffalo, NY.

    A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

    Contact Dr. O'neill to book an appointment today.

    Is this Dr. Catherine O'neill affiliated with a ranked Castle Connolly Top Hospital?

    No, O'neill is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Buffalo General Medical Center. 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 Internist?

    Explore Internist 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 Catherine O'neill accepting new patients in Buffalo, NY?

    Yes, Dr. Catherine O'neill is accepting new patients at this time.

    Does Dr. Catherine O'neill offer online booking?

    Please contact Dr. O'neill's office at (716) 859-2175 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Catherine O'neill?

    Please contact Dr. O'neill's office at (716) 859-2175 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Catherine O'neill have?

    Dr. Catherine O'neill is certified by the American Board of Internal Medicine.

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