Alexander J. Alonso, M.D.
NPI 1124152707ActiveIndividual· Internal Medicine, Nephrology· Peoria, IL
Internal Medicine, Nephrology (M.D.) in Peoria, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $644,887 for 3,830 claims, against $267,921 paid for services in 2024. Nxstage Medical, Inc. reported $89.79 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1124152707 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 15, 2007 |
| Last updated in NPPES | Jul 21, 2026 |
| Certified by provider | Jul 21, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036115179 | IL |
| Internal Medicine | 207R00000X | 036115179 | IL |
| Internal Medicine, Hypertension Specialist | 207RH0005X | 036115179 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 830 |
|---|---|
| Services billed | 4,576 across 23 procedure codes |
| Paid by Medicare | $267,921 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,830 · 7,747 30-day fills |
|---|---|
| Patients | 546 |
| Total drug cost | $644,887 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine, Pediatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Renalcare Associates, S.C.Princeton, IL · 52 clinicians
Hospital affiliations
- Carle Health Methodist HospitalPeoria, IL
- Carle Health Proctor HospitalPeoria, IL
- Graham Hospital AssociationCanton, IL
- Saint Francis Medical CenterPeoria, IL
Other facilities
- Fkc - East Peoria HomeDialysis facility · East Peoria, IL
- Fmc - East Peoria DialysisDialysis facility · East Peoria, IL
- Fmc - of Spoon RiverDialysis facility · Canton, IL
Industry payments (Open Payments)
- 2025$89.79 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Nxstage Medical, Inc. | $89.79 | 1 |
What the 2025 payments were for
- Food and Beverage$89.79 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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