Anthony D. Diaz, DO
NPI 1972783116ActiveIndividual· Anesthesiology· Elk Grove Village, IL
Anesthesiology (DO) in Elk Grove Village, Illinois, trained at Midwestern University College of Dental Medicine, Downers Grove (class of 2003). Medicare paid $27,488 for services to 190 patients in 2024. Merck Sharp & Dohme LLC was the largest of 2 companies reporting payments in 2025, $49.56 in all, mostly food and beverage.
Overview
| NPI | 1972783116 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Nov 5, 2007 |
| Last updated in NPPES | Sep 18, 2025 |
| Certified by provider | Sep 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 036113977 | IL |
| Anesthesiology | 207L00000X | 1103-321 | WI |
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 - Anesthesiology (IL); Practitioner - Anesthesiology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 190 |
|---|---|
| Services billed | 214 across 45 procedure codes |
| Paid by Medicare | $27,488 |
Education and affiliations
| Medical school | Midwestern University College of Dental Medicine, Downers Grove |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Anesthesiology |
Medical groups
- Advocate Health and Hospitals CorporationChicago, IL · 3,118 clinicians
- Vituity-Wisconsin Anesthesia SCPleasant Prairie, WI · 139 clinicians
Hospital affiliations
- Advocate Sherman HospitalElgin, IL
- Froedtert South Inc.Kenosha, WI
Industry payments (Open Payments)
- 2025$49.56 · 2 payments from 2 companies
- 2024$16.78 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $28.16 | 1 |
| Chiesi USA, Inc. | $21.40 | 1 |
What the 2025 payments were for
- Food and Beverage$49.56 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 18 anesthesiologists in Elk Grove Village · All anesthesiologists in Illinois