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Oncologists who accept Medicare in Carterville, IL
CMS lists 9 clinicians in this specialty with a practice address in Carterville. Accept Medicare assignment (the Medicare-approved amount as full payment): 9. Offer telehealth: 7.
Typical amounts Medicare approves in ZIP 62918 (2024 Medicare rates, the latest CMS has published): a new-patient visit $168, of which you pay about $42; a follow-up visit $97, of which you pay about $24 — the 20% coinsurance after the yearly Part B deductible. Clinicians who don't accept assignment can charge up to 15% more; with a Medicare Advantage plan, your plan's copay applies instead.
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Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
Elaine M. Majerus, MD
✓ Accepts Medicare assignmentMIPS score (2024): 88/100Graduated 1998 · Saint Louis University School of MedicineFemaleDrug and device company payments (2025): $19,846Lakshmi Manogna Chintalacheruvu, MD
✓ Accepts Medicare assignmentMIPS score (2024): 82/100✓ TelehealthGraduated 2013FemaleDrug and device company payments (2025): $108Muhammad J. Popalzai, MD
✓ Accepts Medicare assignmentMIPS score (2024): 82/100✓ TelehealthGraduated 2004MaleDrug and device company payments (2025): $537Heather Riggs Carter, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.3/100✓ TelehealthGraduated 2001 · Loma Linda University School of MedicineFemaleArvind Kumar, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1980MaleDrug and device company payments (2025): $154Jennifer Obasi, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2015 · Michigan State University College of Human MedicineFemaleDrug and device company payments (2025): $52Okechukwu Obi, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2011MaleDrug and device company payments (2025): $125Ibrahim D. Omore, MD
✓ Accepts Medicare assignmentGraduated 2010MaleDrug and device company payments (2025): $48Jerry M. Winkler, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1998MaleDrug and device company payments (2025): $472
Before you book
This list comes from Medicare's enrollment records, not from reviews. Call the office to confirm the clinician is taking new Medicare patients. With Original Medicare, a clinician who accepts assignment can only charge you the Medicare deductible and coinsurance; one who doesn't may charge up to 15% more than the Medicare-approved amount. If you have a Medicare Advantage plan, check that the clinician is in the plan's network.
The MIPS final score (0–100) comes from Medicare's Merit-based Incentive Payment System for 2024. It combines quality measures, cost, improvement activities and use of certified health records, and it sets a payment adjustment. Clinicians who report as a group share the group's score. It is not a patient rating, and many clinicians have no published score.
Payments from drug and medical device companies come from CMS Open Payments (2025 general payments: meals, travel, consulting and speaking fees, gifts and similar), summed for each clinician. Receiving payments is legal and common and does not mean a clinician did anything wrong.
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Enrollment, addresses and scores are as reported to CMS and can change. This is not a list of in-network providers for any Medicare Advantage plan, and it is not medical advice. Source: CMS Provider Data Catalog — Doctors and Clinicians National Downloadable File, Clinician MIPS Performance 2024 and Facility Affiliation Data (released Oct 2, 2026).