Mazen Diab, M.D.
NPI 1134436819ActiveIndividual· Internal Medicine, Nephrology· Tinley Park, IL
Internal Medicine, Nephrology (M.D.) with Kidney and Hypertension Associates Ltd, practicing in Tinley Park, Illinois. In 2024 Medicare paid $274,421 for 335 patients, and Part D covered 684 of their prescriptions, 89% of them generic. Lists Advocate Christ Hospital & Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1134436819 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 2, 2010 |
| Last updated in NPPES | Mar 30, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036-135420 | IL |
| Emergency Medicine, Medical Toxicology | 207PT0002X | MT198421 | PA |
| Internal Medicine | 207R00000X | 036135420 | 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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 335 |
|---|---|
| Services billed | 2,548 across 24 procedure codes |
| Paid by Medicare | $274,421 |
Part D prescriptions in 2024
| Prescriptions (claims) | 684 · 1,026 30-day fills |
|---|---|
| Patients | 162 |
| Total drug cost | $31,763 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Kidney and Hypertension Associates LtdEvergreen Park, IL · 6 clinicians
Hospital affiliations
- Advocate Christ Hospital & Medical CenterOak Lawn, IL
- Palos Community HospitalPalos Heights, IL
- Saint Joseph Medical CenterJoliet, IL
- Silver Cross Hospital and Medical CentersNew Lenox, IL
Other facilities
- Davita Renal Center New LenoxDialysis facility · New Lenox, IL
- Davita Tinley Park DialysisDialysis facility · Tinley Park, IL
- Fkc - Mokena DialysisDialysis facility · Mokena, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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