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Dr. Gregory Zanieski, MD

New Haven, CT

17 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Zanieski, Surgical Oncologist in New Haven, CT?

    Dr. Gregory Zanieski, MD is a Surgical Oncologist, who primarily practices in New Haven, CT with 2 additional practice locations. He has been practicing for over 17 years and is board certified by the American Board of Surgery. Dr. Zanieski completed his residency at New York Methodist Hospital and is currently affiliated with Smilow Cancer Hospital At Yale-New Haven. Dr. Zanieski is fluent in English, and is currently seeing new patients. Dr. Zanieski’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Zanieski’s office.

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

    • Residency: New York Methodist Hospital

    Is Dr. Zanieski board certified in Surgical Oncologist?

    Yes, Dr. Gregory Zanieski, MD is board certified by the American Board of Surgery

    What languages does Dr. Zanieski speak?

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

    • English

    What conditions does Dr. Zanieski treat?

    As a Surgical Oncologist, Dr. Zanieski 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. Zanieski. 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:

    • Breast Cancer
    • Early Breast Cancer of the Left Breast
    • Estrogen Receptor Positive (ER+) Status
    • Early Breast Cancer of the Right Breast
    • Upper-Outer Quadrant Right Female Breast Cancer
    • Widespread Left Female Breast Cancer
    • Mammary cancer
    • Breast carcinoma
    • Breast tumor
    • Intraductal carcinoma in situ left breast
    • Precancerous cells left breast
    • Non-invasive breast cancer left breast
    • DCIS left breast
    • ER Positive Breast Cancer
    • Hormone-Sensitive Breast Cancer
    • Estrogen-Driven Cancer
    • Female Breast Cancer
    • Malignant Breast Tumor
    • Breast Carcinoma
    • Intraductal carcinoma in situ right breast
    • Precancerous cells right breast
    • Non-invasive breast cancer right breast
    • DCIS right breast
    • Right female breast cancer upper-outer
    • Upper-outer right female breast tumor
    • Malignant growth in upper-outer right female breast
    • Left female breast cancer in multiple areas
    • Diffuse left female breast cancer
    • Malignant growth in overlapping sites of left female breast

    ICD-10 Codes:

    • C50911: Malignant neoplasm of unspecified site of right female breast
    • C50912: Malignant neoplasm of unspecified site of left female breast
    • D0512: Intraductal carcinoma in situ of left breast
    • Z170: Estrogen receptor positive status [ER+]
    • C50412: Malignant neoplasm of upper-outer quadrant of left female breast
    • D0511: Intraductal carcinoma in situ of right breast
    • C50411: Malignant neoplasm of upper-outer quadrant of right female breast
    • C50811: Malignant neoplasm of overlapping sites of right female breast
    • C50812: Malignant neoplasm of overlapping sites of left female breast

    Also known as:

    • Mammogram for Breast Cancer Screening
    • Health Screening
    • Mammography
    • Breast Cancer Screening (PDQ®)
    • Mammograms
    • Breast X-ray
    • Breast Cancer Check

    ICD-10 Codes:

    • Z1231: Encounter for screening mammogram for malignant neoplasm of breast

    Also known as:

    • Cancer Radiation Therapy
    • Radiation Therapy
    • Radiation Therapy to Treat Cancer
    • Radiation treatment for cancer
    • Oncology radiation
    • Radiotherapy

    ICD-10 Codes:

    • Z510: Encounter for antineoplastic radiation therapy

    Also known as:

    • Personal History of Breast Cancer
    • Breast Cancer
    • Past breast cancer
    • Previous mammary malignancy
    • History of breast tumor

    ICD-10 Codes:

    • Z853: Personal history of malignant neoplasm of breast

    Also known as:

    • High Cholesterol
    • Cholesterol
    • Hypercholesterolemia
    • High blood cholesterol
    • Elevated cholesterol

    ICD-10 Codes:

    • E7800: Pure hypercholesterolemia, unspecified

    Also known as:

    • Abnormal Breast Imaging Results
    • Mammography
    • Inconclusive mammogram
    • Unclear breast scan results
    • Abnormal breast scan

    ICD-10 Codes:

    • R928: Other abnormal and inconclusive findings on diagnostic imaging of breast

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Which procedures does Dr. Zanieski perform as a Surgical Oncologist?

    As a Surgical Oncologist, procedures performed by a Dr. Gregory Zanieski may include:

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

    Does Dr. Zanieski accept my insurance?

    Dr. Zanieski accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Zanieski accept in New Haven, CT?

    Dr. Zanieski in New Haven, CT accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • CarePartners of Connecticut

    • CVS Health (formerly Aetna)

    • Department of Defense / Tricare

    • Elevance Health Inc. (formerly Anthem)

    • Express Scripts

    • Humana

    • Medicare

    • State of Connecticut

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Zanieski's office located?

    Dr. Gregory Zanieski's Primary Practice

    20 York St

    New Haven, CT 06510

    Get Directions

    Smilow Cancer Hospital At Yale-New Haven

    35 Park St Fl Clinic

    New Haven, CT 06519

    Get Directions

    Dr. Gregory Zanieski's Practice 3

    333 Cedar St

    New Haven, CT 06510

    Get Directions

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

    Dr. Zanieski's National Provider Identifier (NPI) number is 1235320474.

    What common questions do patients ask about Dr. Zanieski?

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

    What is Dr. Gregory Zanieski's specialty?

    Dr. Zanieski is a Surgical Oncologist near New Haven, CT. A surgical oncologist is a highly qualified and trained surgeon with specialized expertise in the prevention, diagnosis, treatment, and rehabilitation of cancer patients. They have received additional training in a multidisciplinary approach and dedicate a significant portion of their practice to these areas, as well as to cancer research. Contact Dr. Zanieski to book an appointment today.

    Is this Dr. Gregory Zanieski affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Zanieski is affiliated with Smilow Cancer Hospital At Yale New Haven 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

    Where can I learn more about Surgical Oncologist?

    Explore Surgical Oncologist 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 Gregory Zanieski accepting new patients in New Haven, CT?

    Yes, Dr. Gregory Zanieski is accepting new patients at this time.

    Does Dr. Gregory Zanieski offer online booking?

    Please contact Dr. Zanieski's office for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Gregory Zanieski?

    Please contact Dr. Zanieski's office for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Gregory Zanieski have?

    Dr. Gregory Zanieski is certified by the American Board of Surgery.

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