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Oncologists who accept Medicare in Marshfield, WI
CMS lists 19 clinicians in this specialty with a practice address in Marshfield. Accept Medicare assignment (the Medicare-approved amount as full payment): 19. Offer telehealth: 8.
Typical amounts Medicare approves in ZIP 54449 (2024 Medicare rates, the latest CMS has published): a new-patient visit $163, of which you pay about $41; a follow-up visit $95, 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.
Atif N. Khan, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100Graduated 2003MaleOther offices in Marshfield: 1Drug and device company payments (2025): $195Dong Xiang, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.8/100✓ TelehealthGraduated 1989MaleOther offices in Marshfield: 1Drug and device company payments (2025): $3,937Ricardo J. Quintero -Herencia, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.2/100Graduated 1995MaleOther offices in Marshfield: 1Chady Abboud Leon, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100✓ TelehealthGraduated 2002MaleOther offices in Marshfield: 2Dean A. Delmastro, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100✓ TelehealthGraduated 1988 · Rush Medical College of Rush UniversityMaleOther offices in Marshfield: 2Joseph Edmund, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 2014MaleOther offices in Marshfield: 1Seth O. Fagbemi, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 1982MaleOther offices in Marshfield: 1Drug and device company payments (2025): $118Mark R. Keaton, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 1983 · Medical College of Georgia School of MedicineMaleOther offices in Marshfield: 1Drug and device company payments (2025): $925Adedayo A. Onitilo, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100✓ TelehealthGraduated 1995MaleOther offices in Marshfield: 1Drug and device company payments (2025): $21,002Nick Onyemeke, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 2007MaleOther offices in Marshfield: 1Patcharin Tanawattanacharoen, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100✓ TelehealthGraduated 1987FemaleOther offices in Marshfield: 1Isaac K. Yeboah, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 2001MaleOther offices in Marshfield: 1Vidya Kollu, MD
✓ Accepts Medicare assignmentMIPS score (2024): 34.8/100Graduated 2011FemaleOther offices in Marshfield: 1Mauro C. Janoski, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1983MaleOther offices in Marshfield: 1Choon-Kee Lee, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1981MaleOther offices in Marshfield: 1John T. Reynolds, MD
✓ Accepts Medicare assignmentGraduated 1984 · Rush Medical College of Rush UniversityMaleOther offices in Marshfield: 1Drug and device company payments (2025): $101Nazim S. Turhal, MD
✓ Accepts Medicare assignmentGraduated 1988MaleOther offices in Marshfield: 1Drug and device company payments (2025): $291Rathnamitreyee Vegunta, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2011FemaleOther offices in Marshfield: 1Drug and device company payments (2025): $122Yating Wang, MD
✓ Accepts Medicare assignmentGraduated 2015FemaleOther offices in Marshfield: 1Drug and device company payments (2025): $613
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.
Other specialists in Marshfield
- Primary care doctors80
- Nurse practitioners198
- Cardiologists40
- Dermatologists10
- Orthopedic surgeons21
- Neurologists24
- Gastroenterologists15
- Ophthalmologists9
- Optometrists15
- Podiatrists7
- Urologists12
- Pulmonologists8
- Nephrologists14
- Endocrinologists6
- Rheumatologists5
- ENT doctors12
- Psychiatrists13
- Psychologists10
- Therapists and counselors30
- Physical therapists51
- Occupational therapists11
- Audiologists7
- Chiropractors11
- Gynecologists20
- General surgeons21
- Vascular surgeons4
- Pain management doctors4
- Physiatrists12
- Dietitians7
- Neurosurgeons4
- Infectious disease doctors4
Other care in Marshfield
Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
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).