Specialty Directory
Internal Medicine in Ottawa, IL
Federal CMS data for 5 internal medicine providers practicing in Ottawa, IL. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.
5
Providers
Median industry payments
$137
5
Internal Medicine Providers
in Ottawa, IL
$137
Median Industry Payments
per provider (2018–2024)
2,529
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; disclosure alone establishes neither wrongdoing nor legality.
Internal Medicine includes multiple subspecialties with different practice patterns.
Learn more →
Internal Medicine Providers
NPPES · Open Payments · Medicare| Provider | Medicare Volume | Beneficiaries* | Top Procedure | Industry Payments | Payment Type | Coverage |
|---|---|---|---|---|---|---|
| DONENBERG, MERRICK M.D. | 4,700 | — | EKG interpretation and report | $116 (2023-2023) | — | Very High |
| THOMPSON, DAVID M.D. | 2,701 | — | Office visit, established patient (30-39 min) | $503 (2018-2023) | — | Very High |
| GUERRERO, RAUL MD | 2,529 | — | Anticoagulant management for warfarin | $137 (2018-2022) | — | Very High |
| GHANIM, MOSTAFA MD | 405 | — | EKG interpretation and report | $5,303 (2019-2024) | — | Very High |
| CABALFIN, CYNTHIA M.D. | 151 | — | Blood draw (venipuncture) | $48 (2018-2024) | — | Very High |
Note: Internal 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
Internal Medicine encompasses multiple practice patterns. Comparing providers within the same pattern provides more meaningful context.
Clinical Cardiology (3)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| THOMPSON, DAVID | 2,701 | $503 |
| GUERRERO, RAUL | 2,529 | $137 |
| GHANIM, MOSTAFA | 405 | $5,303 |
Electrophysiology & Cardiac (1)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| DONENBERG, MERRICK | 4,700 | $116 |
Mixed Practice (1)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| CABALFIN, CYNTHIA | 151 | $48 |