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Dr. Leroy Wayne Keiser, MD

Santa Rosa, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Keiser, Hematology / Oncology Specialist in Santa Rosa, CA?

    Dr. Leroy Wayne Keiser, MD is a Hematology / Oncology Specialist, who primarily practices in Santa Rosa, CA with 2 additional practice locations. He is board certified by the American Board of Internal Medicine. Dr. Keiser is fluent in English, and is currently seeing new patients. Dr. Keiser’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Keiser’s office at (707) 528-1050.

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

    Yes, Dr. Leroy Wayne Keiser, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Keiser speak?

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

    • English

    What conditions does Dr. Keiser treat?

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

    • 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:

    • Chronic Lymphocytic Leukemia
    • Chronic Myeloid Leukemia
    • Chronic Lymphocytic Leukemia Treatment (PDQ®)
    • Chronic Myelogenous Leukemia Treatment (PDQ®)
    • CLL
    • B-cell chronic lymphocytic leukemia
    • Lymphocytic leukemia
    • CML
    • Chronic myelogenous leukemia
    • Philadelphia chromosome positive leukemia

    ICD-10 Codes:

    • C9110: Chronic lymphocytic leukemia of B-cell type not having achieved remission
    • C9210: Chronic myeloid leukemia, BCR/ABL-positive, not having achieved remission

    Also known as:

    • Follicular Lymphoma
    • Diffuse Large B-cell Lymphoma
    • Lymphoma
    • Follicular Lymphoma Cancer
    • Indolent Lymphoma
    • FL
    • DLBCL
    • Large B-cell Lymphoma
    • Aggressive B-cell Lymphoma

    ICD-10 Codes:

    • C8298: Follicular lymphoma, unspecified, lymph nodes of multiple sites
    • C8333: Diffuse large B-cell lymphoma, intra-abdominal lymph nodes

    Also known as:

    • Multiple Myeloma
    • Plasma Cell Neoplasms (Including Multiple Myeloma) Treatment (PDQ®)
    • Active multiple myeloma
    • Untreated multiple myeloma
    • Plasma cell myeloma

    ICD-10 Codes:

    • C9000: Multiple myeloma not having achieved remission

    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:

    • Secondary Polycythemia
    • Blood Disorder
    • High red blood cell count (secondary)
    • Excess red blood cells (secondary)
    • Acquired polycythemia

    ICD-10 Codes:

    • D751: Secondary polycythemia

    Also known as:

    • Lung Cancer
    • Bronchial cancer
    • Malignant neoplasm of lung
    • Pulmonary cancer
    • Right upper lobe lung cancer

    ICD-10 Codes:

    • C3490: Malignant neoplasm of unspecified part of unspecified bronchus or lung
    • C3411: Malignant neoplasm of upper lobe, right bronchus or lung

    Also known as:

    • Secondary Bone Cancer
    • Bone Cancer
    • Metastatic bone cancer
    • Cancer spread to bone
    • Bone metastases

    ICD-10 Codes:

    • C7951: Secondary malignant neoplasm of bone

    Also known as:

    • Male Breast Cancer
    • Breast Cancer
    • Breast cancer
    • Male Breast Cancer Treatment (PDQ®)
    • Male Breast Malignancy
    • Male Breast Carcinoma
    • Breast Cancer in Men
    • Female Breast Cancer
    • Malignant Breast Tumor
    • Breast Carcinoma

    ICD-10 Codes:

    • C50021: Malignant neoplasm of nipple and areola, right male breast
    • C50412: Malignant neoplasm of upper-outer quadrant of left female breast

    Also known as:

    • Hereditary Hemorrhagic Telangiectasia
    • Bleeding Disorder
    • Hereditary hemorrhagic telangiectasia
    • Osler-Weber-Rendu Disease
    • HHT
    • Spider Veins

    ICD-10 Codes:

    • I780: Hereditary hemorrhagic telangiectasia

    Also known as:

    • Myelodysplastic Syndrome
    • Myelodysplastic Syndromes
    • Myelodysplastic Syndromes Treatment (PDQ®)
    • MDS
    • Preleukemia
    • Bone marrow failure disorder

    ICD-10 Codes:

    • D469: Myelodysplastic syndrome, unspecified

    Also known as:

    • Vascular Access Device Management
    • Vascular Access Care
    • Port Management
    • Catheter Care

    ICD-10 Codes:

    • Z452: Encounter for adjustment and management of vascular access device

    Also known as:

    • Chronic Kidney Disease, Stage 3
    • Chronic Kidney Disease
    • Chronic Kidney Disease (CKD)
    • CKD Stage 3
    • Moderate Chronic Kidney Disease

    ICD-10 Codes:

    • N1830: Chronic kidney disease, stage 3 unspecified

    Also known as:

    • Iron Deficiency
    • Iron
    • Malnutrition
    • Lack of Iron
    • Low Iron Levels
    • Iron Depletion

    ICD-10 Codes:

    • E611: Iron deficiency

    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:

    • Age-Related Osteoporosis
    • Fractures
    • Osteoporosis
    • Senile Osteoporosis
    • Primary Osteoporosis
    • Bone Thinning from Aging

    ICD-10 Codes:

    • M810: Age-related osteoporosis without current pathological fracture

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

    As a Hematology / Oncology Specialist, procedures performed by a Dr. Leroy Wayne Keiser may include:

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

    Does Dr. Keiser accept my insurance?

    Dr. Keiser accepts most major insurance plans. Important: Please call our office at (707) 528-1050 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Keiser accept in Santa Rosa, CA?

    Dr. Keiser in Santa Rosa, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • BCBS Unspecified

    • CVS Health (formerly Aetna)

    • Department of Veterans Affairs

    • Humana

    • Medicare

    • Other Provider Networks

    • Partnership Health Plan

    • St. Joseph Health System (CA)

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Keiser's office located?

    Dr. Leroy Wayne Keiser's Primary Practice

    3555 Round Barn Cir

    Santa Rosa, CA 95403

    (707) 528-1050

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    Dr. Leroy Wayne Keiser's Practice 2

    1000 Trancas St

    Napa, CA 94558

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    Dr. Leroy Wayne Keiser's Practice 3

    400 N McDowell Blvd

    Petaluma, CA 94954

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

    Dr. Keiser's National Provider Identifier (NPI) number is 1417047283.

    What common questions do patients ask about Dr. Keiser?

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

    What is Dr. Leroy Wayne Keiser's specialty?

    Dr. Keiser is a Hematology / Oncology Specialist near Santa Rosa, CA. 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. Keiser to book an appointment today.

    Is this Dr. Leroy Wayne Keiser affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Keiser is affiliated with Providence Santa Rosa Memorial Hospital 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 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 Leroy Wayne Keiser accepting new patients in Santa Rosa, CA?

    Yes, Dr. Leroy Wayne Keiser is accepting new patients at this time.

    Does Dr. Leroy Wayne Keiser offer online booking?

    Please contact Dr. Keiser's office at (707) 528-1050 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Leroy Wayne Keiser?

    Please contact Dr. Keiser's office at (707) 528-1050 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Leroy Wayne Keiser have?

    Dr. Leroy Wayne Keiser is certified by the American Board of Internal Medicine.

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