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Urologists who accept Medicare in Marshfield, WI
CMS lists 12 clinicians in this specialty with a practice address in Marshfield. Accept Medicare assignment (the Medicare-approved amount as full payment): 12. Offer telehealth: 2.
Typical amounts Medicare approves in ZIP 54449 (2024 Medicare rates, the latest CMS has published): a new-patient visit $124, of which you pay about $31; a follow-up visit $67, of which you pay about $17 — 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.
Gregory A. Anderson, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100✓ TelehealthGraduated 1988 · University of Wisconsin School of MedicineMaleOther offices in Marshfield: 1Drug and device company payments (2025): $50Paulette G. Holley, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 1997 · University of Florida College of MedicineFemaleOther offices in Marshfield: 4James S. Iwakiri, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 1994 · Stanford University School of MedicineMaleOther offices in Marshfield: 2Drug and device company payments (2025): $1,712Devin B. Johnson, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 2002 · Washington University School of MedicineMaleOther offices in Marshfield: 1Emilio F. Lastarria, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 1985 · New York Medical CollegeMaleOther offices in Marshfield: 1Joseph O. Mennen, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 1983 · Tulane University School of MedicineMaleOther offices in Marshfield: 2Drug and device company payments (2025): $32Josiah D. Nelson, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 2004MaleOther offices in Marshfield: 1Drug and device company payments (2025): $1,028Matthew A. Thomas, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 1999 · Geisel School of Medicine at DartmouthMaleOther offices in Marshfield: 2Drug and device company payments (2025): $115Christopher K. Tornehl, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100✓ TelehealthGraduated 2002 · University of Wisconsin School of MedicineMaleOther offices in Marshfield: 2Drug and device company payments (2025): $476Jason A. Wilson, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.6/100Graduated 1998 · Ohio State University College of MedicineMaleOther offices in Marshfield: 2Yi Hsieh, MD
✓ Accepts Medicare assignmentGraduated 1997MaleOther offices in Marshfield: 1Drug and device company payments (2025): $1,744Kenneth S. Yun, MD
✓ Accepts Medicare assignmentGraduated 2004MaleOther offices in Marshfield: 1Drug and device company payments (2025): $955
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
- Pulmonologists8
- Nephrologists14
- Endocrinologists6
- Rheumatologists5
- ENT doctors12
- Oncologists19
- 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).