William R. Zimmermann, M.D.
NPI 1356351845ActiveIndividual· Anesthesiology· Rockford, IL
Anesthesiology (M.D.) with Associated Anesthesiologists SC and 3 other groups, practicing in Rockford, Illinois. Medicare paid $24,693 for services to 150 patients in 2024. Lists Auburn Community Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1356351845 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 8, 2006 |
| Last updated in NPPES | Apr 8, 2025 |
| Certified by provider | Apr 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 036089011 | 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 - Anesthesiology (IL); Practitioner - Anesthesiology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 150 |
|---|---|
| Services billed | 176 across 48 procedure codes |
| Paid by Medicare | $24,693 |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Anesthesiology |
| Secondary specialties | Interventional Pain Management, Pain Management |
Medical groups
- Associated Anesthesiologists SCPeoria, IL · 155 clinicians
- Anesthesia Associates, LtdDowners Grove, IL · 31 clinicians
- Auburn Medical PCAuburn, NY · 25 clinicians
- Hsc Anesthesia Services LLCHinsdale, IL · 11 clinicians
Hospital affiliations
- Auburn Community HospitalAuburn, NY
- Loyola Gottlieb Memorial HospitalMelrose Park, IL
- Macneal HospitalBerwyn, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other anesthesiologists in Rockford
- 1326433467
- 1407013832
- 1891042552
- 1003158403
- 1003856295
- 1033549779
- 1053421248
- 1083879332
- 1124188743
- 1144859422
- 1174607121
- 1194082446
All 47 anesthesiologists in Rockford · All anesthesiologists in Illinois