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Dr. Robert Bayer, MD

Dr. Robert Bayer, MD

DeKalb, IL

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Bayer, Hematology / Oncology Specialist in DeKalb, IL?

    Dr. Robert Bayer, MD is a Hematology / Oncology Specialist, who primarily practices in DeKalb, IL with 2 additional practice locations. He is board certified by the American Board of Internal Medicine. Dr. Bayer graduated from Northwestern University The Feinberg School of Medicine and completed his residency at Loyola Univ Med Ctr, Medical Oncology; Univ Il Hosp & Cli, Internal Medicine. Dr. Bayer is fluent in English and German, and is currently seeing new patients. Dr. Bayer’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Bayer’s office at (815) 756-5255.

    What are Areas of Expertise for Dr. Bayer?

    Dr. Robert Bayer, MD is a highly-rated, board-certified Hematology / Oncology Specialist 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. Bayer empowers patients to confidently navigate their health journey, specializing in Hematologic Malignancies, Leukemia & Lymphoma, or comprehensive wellness support. Serving the DeKalb/IL community, Dr. Bayer is dedicated to enhancing lives through expert, patient-centered care.

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

    • Residency: Loyola Univ Med Ctr, Medical Oncology; Univ Il Hosp & Cli, Internal Medicine | Loyola University Medical Center Program

    • Medical School: Northwestern Uniiversity | Northwestern University The Feinberg School of Medicine

    Is Dr. Bayer board certified in Hematology / Oncology Specialist?

    Yes, Dr. Robert Bayer, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Bayer speak?

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

    • English

    • German

    What conditions does Dr. Bayer treat?

    As a Hematology / Oncology Specialist, Dr. Bayer 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. Bayer. 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:

    • Cancer Chemotherapy
    • Chemo treatment
    • Oncology chemotherapy
    • Cancer drug therapy

    ICD-10 Codes:

    • Z5111: Encounter for antineoplastic chemotherapy

    Also known as:

    • Multiple Myeloma
    • Multiple Myeloma in Remission
    • Plasma Cell Neoplasms (Including Multiple Myeloma) Treatment (PDQ®)
    • Plasma Cell Neoplasms (Including Multiple Myeloma) Treatment (PDQ)
    • Active multiple myeloma
    • Untreated multiple myeloma
    • Plasma cell myeloma
    • Plasma Cell Myeloma in Remission', 'Kahler's Disease in Remission
    • Myeloma in Remission

    ICD-10 Codes:

    • C9000: Multiple myeloma not having achieved remission
    • C9001: Multiple myeloma in remission

    Also known as:

    • Iron Deficiency Anemia from Chronic Blood Loss
    • Anemia
    • Iron
    • Anemia due to iron deficiency and blood loss
    • Chronic blood loss anemia
    • Low iron anemia from bleeding

    ICD-10 Codes:

    • D500: Iron deficiency anemia secondary to blood loss (chronic)

    Also known as:

    • Non-Hereditary Low Immunoglobulin Levels
    • Immune System and Disorder
    • Acquired Antibody Deficiency
    • Non-Genetic Immune Deficiency

    ICD-10 Codes:

    • D801: Nonfamilial hypogammaglobulinemia

    Also known as:

    • Prostate Cancer
    • Prostate Cancer Treatment (PDQ®)
    • Prostatic Carcinoma
    • Prostate Gland Cancer
    • Malignant Prostate Tumor

    ICD-10 Codes:

    • C61: Malignant neoplasm of prostate

    Also known as:

    • Lung Cancer
    • Left Lung Cancer
    • Bronchial Cancer
    • Malignant Lung Tumor
    • Right lung cancer
    • Bronchial cancer
    • Malignant neoplasm of lung

    ICD-10 Codes:

    • C3492: Malignant neoplasm of unspecified part of left bronchus or lung
    • C3491: Malignant neoplasm of unspecified part of right bronchus or lung

    Also known as:

    • Polycythemia vera
    • Bone Marrow Disease
    • Chronic Myeloproliferative Neoplasms Treatment (PDQ)
    • PV
    • Primary polycythemia
    • Erythremia

    ICD-10 Codes:

    • D45: Polycythemia vera

    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:

    • Neuroendocrine Tumor
    • Cancer
    • Endocrine Disease
    • Malignant NET
    • Neuroendocrine Cancer
    • NET Cancer

    ICD-10 Codes:

    • C7A8: Other malignant neuroendocrine tumors

    Also known as:

    • Chronic Lymphocytic Leukemia
    • Chronic Lymphocytic Leukemia Treatment (PDQ®)
    • CLL
    • B-cell chronic lymphocytic leukemia
    • Lymphocytic leukemia

    ICD-10 Codes:

    • C9110: Chronic lymphocytic leukemia of B-cell type not having achieved remission

    Also known as:

    • Colorectal Cancer
    • Rectal cancer
    • Colon cancer
    • Bowel cancer
    • Malignant neoplasm of rectum

    ICD-10 Codes:

    • C20: Malignant neoplasm of rectum

    Also known as:

    • Monoclonal Gammopathy
    • Blood Disorder
    • Plasma Cell Neoplasms (Including Multiple Myeloma) Treatment (PDQ)
    • MGUS
    • Plasma Cell Disorder
    • Gammopathy of Undetermined Significance

    ICD-10 Codes:

    • D472: Monoclonal gammopathy

    Also known as:

    • Chronic Myeloproliferative Neoplasm
    • Bone Marrow Disease
    • Chronic Myeloproliferative Neoplasms Treatment (PDQ®)
    • CMPN
    • Myeloproliferative disorder
    • Chronic blood cancer

    ICD-10 Codes:

    • D471: Chronic myeloproliferative disease

    Also known as:

    • Small B-cell Lymphoma
    • Lymphoma
    • Small Lymphocytic Lymphoma
    • SLL
    • B-cell Lymphoma

    ICD-10 Codes:

    • C8300: Small cell B-cell lymphoma, unspecified site

    Also known as:

    • Essential Thrombocythemia
    • Platelet Disorder
    • Essential thrombocythemia
    • Chronic Myeloproliferative Neoplasms Treatment (PDQ)
    • ET
    • Primary Thrombocythemia
    • Hemorrhagic Thrombocythemia

    ICD-10 Codes:

    • D473: Essential (hemorrhagic) thrombocythemia

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Other Specific B Vitamin Deficiency
    • B Vitamins
    • Malnutrition
    • Specific B Vitamin Shortage
    • Less Common B Vitamin Deficiency
    • Rare B Vitamin Deficiency

    ICD-10 Codes:

    • E538: Deficiency of other specified B group vitamins

    Also known as:

    • Vitamin B12 Deficiency Anemia
    • Anemia
    • B Vitamins
    • Pernicious Anemia
    • B12 Anemia
    • Cobalamin Deficiency Anemia

    ICD-10 Codes:

    • D510: Vitamin B12 deficiency anemia due to intrinsic factor deficiency

    Which procedures does Dr. Bayer perform as a Hematology / Oncology Specialist?

    As a Hematology / Oncology Specialist, procedures performed by a Dr. Robert Bayer may include:

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

    Does Dr. Bayer accept my insurance?

    Dr. Bayer accepts most major insurance plans. Important: Please call our office at (815) 756-5255 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Bayer accept in DeKalb, IL?

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

    Top Insurances

    • All Other Third Party

    • Blue Cross Blue Shield of Michigan

    • CVS Health (formerly Aetna)

    • Express Scripts

    • Health Care Service Corporation (HCSC)

    • HealthMarkets

    • Medicare

    • Midwest Operating Engineers

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Bayer's office located?

    Dr. Robert Bayer's Primary Practice

    10 Health Services Dr

    DeKalb, IL 60115

    (815) 756-5255

    Get Directions

    Dr. Robert Bayer's Practice 2

    351 Delnor Dr

    Geneva, IL 60134

    Get Directions

    Dr. Robert Bayer's Practice 3

    5777 Dept

    Carol Stream, IL 60122

    Get Directions

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

    Dr. Bayer's National Provider Identifier (NPI) number is 1669527818.

    What common questions do patients ask about Dr. Bayer?

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

    What is Dr. Robert Bayer's specialty?

    Dr. Bayer is a Hematology / Oncology Specialist near DeKalb, IL. An internist doctor of osteopathy specializing in the combined treatment of hematology and oncology disorders. A doctor of osteopathy who is board eligible or certified by the American Osteopathic Board of Internal Medicine was previously able to obtain a Certificate of Special Qualifications in Hematology and Oncology; however, this certificate is no longer available. Contact Dr. Bayer to book an appointment today.

    Is this Dr. Robert Bayer affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Bayer is affiliated with Northwestern Medicine Delnor Hospital, Northwestern Medicine Central Dupage Hospital 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 Hematology / Oncology Specialist?

    Explore Hematology / Oncology Specialist 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 Robert Bayer accepting new patients in DeKalb, IL?

    Yes, Dr. Robert Bayer is accepting new patients at this time.

    Does Dr. Robert Bayer offer online booking?

    Please contact Dr. Bayer's office at (815) 756-5255 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Robert Bayer?

    Please contact Dr. Bayer's office at (815) 756-5255 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Robert Bayer have?

    Dr. Robert Bayer is certified by the American Board of Internal Medicine.

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