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Nephrologists who accept Medicare in Marlborough, MA
CMS lists 8 clinicians in this specialty with a practice address in Marlborough. Accept Medicare assignment (the Medicare-approved amount as full payment): 8. Offer telehealth: 4.
Typical amounts Medicare approves in ZIP 01752 (2024 Medicare rates, the latest CMS has published): a new-patient visit $144, of which you pay about $36; a follow-up visit $111, of which you pay about $28 — 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.
Konstantin Abramov, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100✓ TelehealthGraduated 2002MaleOther offices in Marlborough: 1Drug and device company payments (2025): $19Eric S. Iida, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100Graduated 1995 · Medical College of PennsylvaniaMaleOther offices in Marlborough: 1Drug and device company payments (2025): $2Dagmar Klinger, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100✓ TelehealthGraduated 1993FemaleOther offices in Marlborough: 1Matthew A. Niemi, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100✓ TelehealthGraduated 2009 · Tufts University School of MedicineMaleKenneth M. Ralto, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100✓ TelehealthGraduated 2011 · Tufts University School of MedicineMaleDrug and device company payments (2025): $202Matthew J. Trainor, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100Graduated 2001MaleRavinder K. Wali, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100Graduated 1980MaleHumaira A. Mahmud, MD
✓ Accepts Medicare assignmentGraduated 1990FemaleDrug and device company payments (2025): $68
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 Marlborough
- Primary care doctors41
- Nurse practitioners54
- Cardiologists6
- Dermatologists7
- Orthopedic surgeons4
- Neurologists3
- Gastroenterologists3
- Ophthalmologists4
- Optometrists6
- Pulmonologists3
- Oncologists3
- Psychiatrists8
- Therapists and counselors69
- Physical therapists21
- Chiropractors3
- General surgeons5
- Infectious disease doctors3
Other care in Marlborough
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).