Home › Doctors › Hawaii › ‘Ewa Beach › Oncologists
Oncologists who accept Medicare in ‘Ewa Beach, HI
CMS lists 5 clinicians in this specialty with a practice address in ‘Ewa Beach. Accept Medicare assignment (the Medicare-approved amount as full payment): 5. Offer telehealth: 5.
Typical amounts Medicare approves in ZIP 96706 (2024 Medicare rates, the latest CMS has published): a new-patient visit $180, of which you pay about $45; a follow-up visit $106, of which you pay about $26 — 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.
Is this your organization or practice? Feature it at the top of this page — $49 for 30 days →
Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
Brandon A. Kobayashi, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100✓ TelehealthGraduated 2018 · University of Hawaii John A. Burns School of MedicineMaleDrug and device company payments (2025): $763Shaun Donegan, MD
✓ Accepts Medicare assignmentMIPS score (2024): 97/100✓ TelehealthGraduated 2005 · Tulane University School of MedicineMaleOther offices in ‘Ewa Beach: 1Drug and device company payments (2025): $3,293Yoshihito D. Saito, MD
✓ Accepts Medicare assignmentMIPS score (2024): 97/100✓ TelehealthGraduated 2009 · University of Chicago, Pritzker School of MedicineMaleDrug and device company payments (2025): $1,568Nicolas A. Villanueva, MD
✓ Accepts Medicare assignmentMIPS score (2024): 97/100✓ TelehealthGraduated 2013 · University of Hawaii John A. Burns School of MedicineMaleDrug and device company payments (2025): $1,124Matthew I. Ebia, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2019MaleOther offices in ‘Ewa Beach: 1Drug and device company payments (2025): $781
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 ‘Ewa Beach
- Primary care doctors44
- Geriatricians4
- Nurse practitioners44
- Cardiologists14
- Orthopedic surgeons7
- Neurologists10
- Gastroenterologists4
- Pulmonologists7
- Psychiatrists3
- Psychologists12
- Therapists and counselors6
- Physical therapists5
- Chiropractors7
- Gynecologists11
- General surgeons9
- Vascular surgeons3
Other care in ‘Ewa Beach
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).