Ernest F. Dejesus, MD
NPI 1295737088ActiveIndividual· Internal Medicine, Nephrology· Winfield, IL
Internal Medicine, Nephrology (MD) in Winfield, Illinois, trained at Ohio State University College of Medicine (class of 2000). 654 Medicare patients in 2024, $369,257 paid; nearly all of their 1,945 Part D prescriptions were generic (90%). Vifor Pharma, Inc. was the largest of 14 companies reporting payments in 2025, $783.92 in all, mostly food and beverage.
Overview
| NPI | 1295737088 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 11, 2005 |
| Last updated in NPPES | Aug 4, 2025 |
| Certified by provider | Aug 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036.109525 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 654 |
|---|---|
| Services billed | 3,875 across 49 procedure codes |
| Paid by Medicare | $369,257 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,945 · 4,322 30-day fills |
|---|---|
| Patients | 336 |
| Total drug cost | $534,621 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Ohio State University College of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical groups
- Nephrology Associates of Northern Illinois LtdAlgonquin, IL · 117 clinicians
- Nani-Ihp LLCElmhurst, IL · 7 clinicians
Hospital affiliations
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine Delnor Community HospitalGeneva, IL
- Uchicago Medicine Adventhealth GlenoaksGlendale Heights, IL
Other facilities
- Concerto DialysisDialysis facility · Lincolnwood, IL
- Fmc - Dupage WestDialysis facility · West Chicago, IL
- Fmc - Glendale Heights Dialysis CenterDialysis facility · Glendale Heights, IL
Industry payments (Open Payments)
- 2025$783.92 · 28 payments from 14 companies
- 2024$852.78 · 36 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vifor Pharma, Inc. | $105.16 | 4 |
| Bard Peripheral Vascular, Inc. | $95.07 | 1 |
| Novartis Pharmaceuticals Corporation | $85.23 | 3 |
| Amgen Inc. | $80.26 | 4 |
| Calliditas Therapeutics US Inc. | $68.49 | 2 |
What the 2025 payments were for
- Food and Beverage$783.92 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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