Doctor profile · Federal record
Dr. William Zimmermann, M.D.
Anesthesiology Physician (CMS: Anesthesiology) · Rockford, IL
- NPI 1356351845
- Accepts Medicare
- 37 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
8201 E Riverside Blvd
Rockford, IL 611142300
(815) 971-7000 - Additional location
-
12935 Gregory St
Blue Island, IL 604062428
(708) 824-4494 - Mailing address
-
29624 Network Pl
Chicago, IL 606731296
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- April 8, 2025
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 207L00000X — NUCC code
- State license (1)
- Illinois #036089011
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1356351845. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
106
Distinct HCPCS
6
Medicare allowed
$14,960
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
00142 |
Anesthesia for lens surgery | 32 | 31 | $115 | |
00731 |
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 18 | 18 | $149 | |
01922 |
Anesthesia for x-ray or radiation therapy | 18 | 18 | $213 | |
00410 |
Anesthesia for procedure to correct abnormal heart rhythm | 13 | 12 | $120 | |
00813 |
Anesthesia for procedure on small and large bowel using an endoscope | 13 | 13 | $155 | |
00812 |
Anesthesia for exam of colon using an endoscope | 12 | 12 | $99 |
In context: peer comparison
Among 20 peers in Rockford Anesthesiology Physician, average services per provider: 24. This provider delivers 4.4× the peer median.Frequently asked questions
What is Dr. William Zimmermann's medical specialty?
Dr. William Zimmermann practices Anesthesiology Physician in Rockford, IL.
Where does Dr. William Zimmermann practice?
Dr. William Zimmermann practices at 8201 E Riverside Blvd, Rockford, IL 611142300. Office phone: 8159717000.
What is Dr. William Zimmermann's NPI?
Dr. William Zimmermann's National Provider Identifier (NPI) is 1356351845, issued by NPPES.
Does Dr. William Zimmermann accept Medicare assignment?
Yes. Dr. William Zimmermann accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Zimmermann commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for lens surgery (HCPCS 00142); Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (HCPCS 00731); Anesthesia for x-ray or radiation therapy (HCPCS 01922). Source: CMS Medicare Physician & Other Practitioners file.