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Nephrologists who accept Medicare in Merrillville, IN
CMS lists 14 clinicians in this specialty with a practice address in Merrillville. Accept Medicare assignment (the Medicare-approved amount as full payment): 14. Offer telehealth: 3.
Typical amounts Medicare approves in ZIP 46410 (2024 Medicare rates, the latest CMS has published): a new-patient visit $122, of which you pay about $31; a follow-up visit $94, 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.
Raied Abdullah, MD
✓ Accepts Medicare assignmentGraduated 1994 · Rush Medical College of Rush UniversityMaleDrug and device company payments (2025): $696Gaurav Agarwal, MD
✓ Accepts Medicare assignmentGraduated 2002MaleOther offices in Merrillville: 1Drug and device company payments (2025): $1,107Maher Ajam, MD
✓ Accepts Medicare assignmentGraduated 1978MaleDrug and device company payments (2025): $384Gaurav Alreja, MD
✓ Accepts Medicare assignmentGraduated 2003MaleDrug and device company payments (2025): $907Yves Brignol, MD
✓ Accepts Medicare assignmentGraduated 1984MaleDrug and device company payments (2025): $1,941Saurabh Chawla, MD
✓ Accepts Medicare assignmentGraduated 2001MaleOther offices in Merrillville: 1Drug and device company payments (2025): $1,829Kenneth Choi
✓ Accepts Medicare assignmentGraduated 2001 · Northwestern University Feinberg Medical SchoolMaleDrug and device company payments (2025): $1,623Asim H. Chughtai, MD
✓ Accepts Medicare assignmentGraduated 2001MaleDrug and device company payments (2025): $611Rafael Fletes, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1991 · University of Chicago, Pritzker School of MedicineMaleDrug and device company payments (2025): $643Kristoph M. Giricz, MD
✓ Accepts Medicare assignmentGraduated 2001 · Indiana University School of MedicineMaleDrug and device company payments (2025): $110Nader Ismail, DO
✓ Accepts Medicare assignmentGraduated 2019MaleDrug and device company payments (2025): $1,169Venkat R. Vavilala, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1992MaleDrug and device company payments (2025): $1,429Bryan E. Waldo, MD
✓ Accepts Medicare assignmentGraduated 2002 · Medical College of WisconsinMaleDrug and device company payments (2025): $89Katrina Wright, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1999 · Loyola University of Chicago, Stritch School of MedicineFemaleDrug and device company payments (2025): $654
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 Merrillville
- Primary care doctors80
- Nurse practitioners242
- Cardiologists15
- Orthopedic surgeons10
- Neurologists17
- Gastroenterologists6
- Ophthalmologists10
- Optometrists14
- Podiatrists8
- Urologists13
- Pulmonologists5
- Endocrinologists5
- ENT doctors7
- Oncologists6
- Psychiatrists17
- Psychologists16
- Therapists and counselors43
- Physical therapists40
- Occupational therapists19
- Speech therapists10
- Chiropractors8
- Gynecologists9
- General surgeons6
- Physiatrists3
- Neurosurgeons4
Other care in Merrillville
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).