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Primary care doctors who accept Medicare in Lancaster, WI
CMS lists 9 clinicians in this specialty with a practice address in Lancaster. Accept Medicare assignment (the Medicare-approved amount as full payment): 9. Offer telehealth: 0.
Typical amounts Medicare approves in ZIP 53813 (2024 Medicare rates, the latest CMS has published): a new-patient visit $124, of which you pay about $31; 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.
David E. Casillas Plazola, MD
✓ Accepts Medicare assignmentMIPS score (2024): 80.3/100Graduated 2019 · Medical College of WisconsinMaleDrug and device company payments (2025): $35Kimberly A. Perttu, DO
✓ Accepts Medicare assignmentMIPS score (2024): 80.3/100Graduated 2009 · Lake Erie College of Osteopathic Medicine, ErieFemaleDrug and device company payments (2025): $238Karen Farris, DO
✓ Accepts Medicare assignmentGraduated 2017 · Campbell Univ School of Osteopathic MedicineFemaleOther offices in Lancaster: 1Eli T. James, MD
✓ Accepts Medicare assignmentGraduated 2018 · University of Wisconsin School of MedicineMaleDrug and device company payments (2025): $211Neil T. Martin, MD
✓ Accepts Medicare assignmentGraduated 2012MaleOther offices in Lancaster: 1Eric G. Slane, MD
✓ Accepts Medicare assignmentGraduated 2000 · University of Oklahoma College of MedicineMaleOther offices in Lancaster: 1Eric E. Stader, MD
✓ Accepts Medicare assignmentGraduated 2000 · University of Oklahoma College of MedicineMaleJessica H. Varnam, MD
✓ Accepts Medicare assignmentGraduated 2008 · Loma Linda University School of MedicineFemaleOther offices in Lancaster: 1Ronald J. White, DO
✓ Accepts Medicare assignmentGraduated 2020 · Lake Erie Col of Osteo Med at Seton Hill UnivMaleDrug and device company payments (2025): $42
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 Lancaster
- Nurse practitioners7
- Optometrists3
- Therapists and counselors5
- Physical therapists3
- Chiropractors3
- General surgeons5
Other care in Lancaster
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).