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Primary care doctors who accept Medicare in Bar Harbor, ME
CMS lists 16 clinicians in this specialty with a practice address in Bar Harbor. Accept Medicare assignment (the Medicare-approved amount as full payment): 16. Offer telehealth: 0.
Typical amounts Medicare approves in ZIP 04609 (2024 Medicare rates, the latest CMS has published): a new-patient visit $123, 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.
Mark O. Brown, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 1984 · Ohio State University College of MedicineMaleKatherine Gassman, DO
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 2012FemaleOther offices in Bar Harbor: 1Drug and device company payments (2025): $21Tanya Hanke, DO
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 2008 · University of New England, College of Osteo MedicineFemaleMark A. Kandutsch, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 1980 · University of Vermont College of MedicineMaleOther offices in Bar Harbor: 1Elizabeth Laverack, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 1989 · Geisel School of Medicine at DartmouthFemaleOther offices in Bar Harbor: 1Natasha S. Neal, DO
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 2018 · University of New England, College of Osteo MedicineFemaleRodney T. Ono, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 1980 · Tufts University School of MedicineMalePeter J. Ossanna, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 1988 · Johns Hopkins University School of MedicineMaleGabriel J. Plourde, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 2015MaleOther offices in Bar Harbor: 1Julian J. Weinstein, DO
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 2019 · University of New England, College of Osteo MedicineMalePeter H. Witham, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 1988 · George Washington University School of MedicineMaleWinfred Del Mundo, MD
✓ Accepts Medicare assignmentMIPS score (2024): 93.3/100Graduated 1994MaleVanessa C. Little, DO
✓ Accepts Medicare assignmentMIPS score (2024): 88.3/100Graduated 2005 · University of New England, College of Osteo MedicineFemaleOther offices in Bar Harbor: 1Oleg I. Reznik, MD
✓ Accepts Medicare assignmentMIPS score (2024): 84.5/100Graduated 2000 · State University of New York Downstate Medical CenterMaleDrug and device company payments (2025): $137Daniel R. Myles, MD
✓ Accepts Medicare assignmentGraduated 2020MaleJon C. Older, DO
✓ Accepts Medicare assignmentGraduated 1996 · University of New England, College of Osteo MedicineMale
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).