Specialty Directory
Emergency Medicine in Naperville, IL
Federal CMS data for 11 emergency medicine providers practicing in Naperville, IL. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.
11
Providers
Median industry payments
$110
11
Emergency Medicine Providers
in Naperville, IL
$110
Median Industry Payments
per provider (2018–2024)
687
Median Medicare Services
fee-for-service claims
How to read this directory: Providers are listed by Medicare service volume, which reflects only
Medicare fee-for-service patients (typically 65+). This does not represent total practice volume.
Industry payments span multiple years and payment types — they are legal and do not indicate wrongdoing.
Emergency Medicine includes multiple subspecialties with different practice patterns.
Learn more →
Emergency Medicine Providers
NPPES · Open Payments · Medicare| Provider | Medicare Volume | Beneficiaries* | Top Procedure | Industry Payments | Payment Type | Coverage |
|---|---|---|---|---|---|---|
| HARTMANN, MICHAEL MD | 1,014 | 986 | Emergency department visit, high complexity | $361 (2018-2023) | Food & Beverage (100%) | Very High |
| HOOVER, RALPH M.D. | 861 | 825 | Emergency department visit, high complexity | $17 (2021-2021) | Food & Beverage (100%) | Very High |
| MATHEWS, SUNIL M.D. | 741 | 700 | Emergency department visit, high complexity | $464 (2018-2024) | Food & Beverage (100%) | Very High |
| SANDHU, NAVTEJ M.D. | 725 | 708 | Emergency department visit, high complexity | $11,710 (2020-2021) | Consulting (100%) | Very High |
| RAJI OSOBU, ZAINAB MD | 702 | 683 | Emergency department visit, high complexity | $13 (2023-2023) | Food & Beverage (100%) | Very High |
| APOSTOLOPOULOS, NICHOLAS MD | 687 | 558 | Ceftriaxone antibiotic injection | $100 (2018-2020) | Food & Beverage (100%) | Very High |
| MCALLISTER, MEGAN M.D. | 542 | 531 | Emergency department visit, high complexity | $35 (2022-2024) | Food & Beverage (100%) | Very High |
| WISNIEWSKI, KARY M.D. | 536 | 525 | Emergency department visit, high complexity | $17 (2021-2021) | Food & Beverage (100%) | Very High |
| VASKO, JOHN M.D. | 516 | 503 | Emergency department visit, high complexity | $110 (2021-2024) | Food & Beverage (100%) | Very High |
| PEKSA-SINK, RENEE D.O. | 510 | 493 | Emergency department visit, high complexity | $111 (2018-2022) | Food & Beverage (100%) | Very High |
| MOSKOFF, JORDAN MD | 51 | 49 | Emergency department visit, moderate complexity | $909 (2018-2024) | Consulting (64%) | Very High |
Note: Emergency Medicine encompasses multiple subspecialties with different practice patterns.
Differences in payment amounts and procedure volumes may reflect subspecialty focus
rather than practice quality. Consider viewing individual profiles for full context.
By Practice Pattern
Emergency Medicine encompasses multiple practice patterns. Comparing providers within the same pattern provides more meaningful context.
Mixed Practice (10)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| HARTMANN, MICHAEL | 1,014 | $361 |
| HOOVER, RALPH | 861 | $17 |
| MATHEWS, SUNIL | 741 | $464 |
| SANDHU, NAVTEJ | 725 | $11,710 |
| RAJI OSOBU, ZAINAB | 702 | $13 |
| MCALLISTER, MEGAN | 542 | $35 |
| WISNIEWSKI, KARY | 536 | $17 |
| VASKO, JOHN | 516 | $110 |
| PEKSA-SINK, RENEE | 510 | $111 |
| MOSKOFF, JORDAN | 51 | $909 |
Clinical Cardiology (1)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| APOSTOLOPOULOS, NICHOLAS | 687 | $100 |