Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Fesler, Hematology / Oncology Specialist in Saint Louis, MO?
Dr. Mark Fesler, MD is a Hematology / Oncology Specialist, who primarily practices in Saint Louis, MO with 1 additional practice location. He is board certified by the American Board of Internal Medicine. Dr. Fesler is fluent in English, and is currently seeing new patients. Dr. Fesler’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Fesler’s office at (314) 577-6057.
What are Areas of Expertise for Dr. Fesler?
Dr. Mark Fesler, 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. Fesler empowers patients to confidently navigate their health journey, specializing in Anemia-Aplastic, Cancer Prevention, Cancer Risk Assessment, Hematology, Hodgkin's Lymphoma, Multiple Myeloma, Myelodysplastic Syndromes, Myeloproliferative Disorders, Testicular Cancer, or comprehensive wellness support. Serving the Saint Louis/MO community, Dr. Fesler is dedicated to enhancing lives through expert, patient-centered care.
Is Dr. Fesler board certified in Hematology / Oncology Specialist?
Yes, Dr. Mark Fesler, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Fesler speak?
Dr. Fesler and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Fesler treat?
As a Hematology / Oncology Specialist, Dr. Fesler 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. Fesler. 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
- Cancer Immunotherapy
- Chemo treatment
- Oncology chemotherapy
- Cancer drug therapy
- Oncology immunotherapy
- Immune therapy for cancer
ICD-10 Codes:
- Z5111: Encounter for antineoplastic chemotherapy
- Z5112: Encounter for antineoplastic immunotherapy
Also known as:
- Chronic Lymphocytic Leukemia
- Chronic Myeloid Leukemia
- Acute Lymphocytic Leukemia in Remission
- Acute Lymphoblastic Leukemia
- Chronic Lymphocytic Leukemia Treatment (PDQ®)
- Chronic Myelogenous Leukemia Treatment (PDQ®)
- Acute Lymphocytic Leukemia
- CLL
- B-cell chronic lymphocytic leukemia
- Lymphocytic leukemia
- CML
- Chronic myelogenous leukemia
- Philadelphia chromosome positive leukemia
- ALL Leukemia in Remission
- Acute Lymphoblastic Leukemia in Remission
- Childhood Leukemia in Remission
- ALL
- Acute lymphocytic leukemia
- Lymphoblastic 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
- C9101: Acute lymphoblastic leukemia, in remission
- C9100: Acute lymphoblastic leukemia not having achieved remission
Also known as:
- Diffuse Large B-cell Lymphoma
- Non-Hodgkin Lymphoma
- Waldenstrom Macroglobulinemia
- Lymphoma
- Waldenstrm macroglobulinemia
- DLBCL
- Aggressive B-cell Lymphoma
- Diffuse B-cell Lymphoma
- Lymphatic Cancer
- Lymphosarcoma
- NHL
- Large B-cell Lymphoma
- Lymphoplasmacytic Lymphoma', 'WM Lymphoma', 'Waldenstrom's Disease
ICD-10 Codes:
- C8330: Diffuse large B-cell lymphoma, unspecified site
- C8590: Non-Hodgkin lymphoma, unspecified, unspecified site
- C8331: Diffuse large B-cell lymphoma, lymph nodes of head, face, and neck
- C8800: Waldenstrom macroglobulinemia not having achieved remission
- C880: Waldenstrom macroglobulinemia
- C8580: Other specified types of non-Hodgkin lymphoma, unspecified site
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:
- Abnormal Findings on Scans of Other Specific Body Structures
- Unusual Scan Results (Other Body Parts)
- Atypical Imaging Findings (Other)
- Abnormal X-ray/MRI/CT (Other)
ICD-10 Codes:
- R9389: Abnormal findings on diagnostic imaging of other specified body structures
Also known as:
- Enlarged Spleen
- Spleen Disease
- Splenomegaly
- Swollen spleen
- Spleen enlargement
ICD-10 Codes:
- R161: Splenomegaly, not elsewhere classified
Also known as:
- High Platelet Count
- Platelet Disorder
- Thrombocytosis
- Elevated platelet count
- Too many platelets
ICD-10 Codes:
- D75839: Thrombocytosis, unspecified
Also known as:
- Iron Deficiency Anemia
- Anemia
- Iron
- Anemia from Iron Lack
- Low Iron Anemia
- Sideropenic Anemia
ICD-10 Codes:
- D509: Iron deficiency anemia, unspecified
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
Which procedures does Dr. Fesler perform as a Hematology / Oncology Specialist?
As a Hematology / Oncology Specialist, procedures performed by a Dr. Mark Fesler may include:
- 3D Conformal Radiotherapy
- Adaptive Radiation Therapy (ART)
- Adrenalectomy
- Blood Thinning Therapy / Anticoagulation
- Blood Transfusion Consultation
- Blood Transfusion Follow Up
- Bone Excision
- Bone Grafting
For detailed information, please contact Dr. Fesler's office.
Does Dr. Fesler accept my insurance?
Dr. Fesler accepts most major insurance plans. Important: Please call our office at (314) 577-6057 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Fesler accept in Saint Louis, MO?
Dr. Fesler in Saint Louis, MO accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Aetna
Blue Cross Blue Shield
Blue Cross Blue Shield of Illinois
Blue Cross Blue Shield of Michigan
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Humana
Medicare
Mutual of Omaha
UnitedHealthcare
View All Insurances
Where is Dr. Fesler's office located?
What is Dr. Fesler's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Fesler's National Provider Identifier (NPI) number is 1235204066.
What common questions do patients ask about Dr. Fesler?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Fesler
What is Dr. Mark Fesler's specialty?
Dr. Fesler is a Hematology / Oncology Specialist near Saint Louis, MO. 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. Fesler to book an appointment today.
Is this Dr. Mark Fesler affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Fesler is affiliated with St. Luke's Hospital - Chesterfield, MO 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 Mark Fesler accepting new patients in Saint Louis, MO?
Yes, Dr. Mark Fesler is accepting new patients at this time.
Does Dr. Mark Fesler offer online booking?
Please contact Dr. Fesler's office at (314) 577-6057 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Mark Fesler?
Please contact Dr. Fesler's office at (314) 577-6057 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Mark Fesler have?
Dr. Mark Fesler is certified by the American Board of Internal Medicine.
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