Aaron Gurfinchel, MD
NPI 1639392939ActiveIndividual· Internal Medicine, Nephrology· Joliet, IL
Internal Medicine, Nephrology (MD) with Nephrology Associates of Northern Illinois Ltd, practicing in Joliet, Illinois. 498 Medicare patients in 2024, $208,590 paid; nearly all of their 907 Part D prescriptions were generic (92%). Fresenius USA Marketing, Inc. reported $24.94 in payments in 2025, mostly food and beverage. Lists Morris Hospital & Healthcare Centers and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1639392939 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 11, 2007 |
| Last updated in NPPES | Apr 28, 2025 |
| Certified by provider | Apr 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036103677 | IL |
| Internal Medicine | 207R00000X | 036-103677 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 498 |
|---|---|
| Services billed | 1,939 across 21 procedure codes |
| Paid by Medicare | $208,590 |
Part D prescriptions in 2024
| Prescriptions (claims) | 907 · 1,969 30-day fills |
|---|---|
| Patients | 193 |
| Total drug cost | $77,834 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Nephrology Associates of Northern Illinois LtdAlgonquin, IL · 117 clinicians
Hospital affiliations
- Morris Hospital & Healthcare CentersMorris, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Riverside Medical CenterKankakee, IL
- Saint Joseph Medical CenterJoliet, IL
- Silver Cross Hospital and Medical CentersNew Lenox, IL
Other facilities
- Dialyze Direct Il - Glen EllynDialysis facility · Glen Ellyn, IL
- Davita Renal Center New LenoxDialysis facility · New Lenox, IL
- Davita Renal Center West JolietDialysis facility · Joliet, IL
- Fmc - PlainfieldDialysis facility · Plainfield, IL
- Fmc - Plainfield NorthDialysis facility · Plainfield, IL
Industry payments (Open Payments)
- 2025$24.94 · 1 payment from 1 company
- 2024$44.08 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Fresenius USA Marketing, Inc. | $24.94 | 1 |
What the 2025 payments were for
- Food and Beverage$24.94 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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