Doctor profile · Federal record
Dr. William Weems, MD
Anesthesiology Physician (CMS: Anesthesiology) · Rockford, IL
- NPI 1003856295
- Accepts Medicare
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
5875 E Riverside Blvd
Rockford, IL 611144937
(815) 398-9491
fax (815) 381-7498 - Additional location
-
10400 Haligus RD
Huntley, IL 601429553
(224) 654-0000
fax (224) 654-0000 - Additional location
-
1425 N Randall RD
Elgin, IL 601232300
(847) 742-9800 - Additional location
-
Centegra Memorial Medical Center, 3701 Doty Road
Woodstock, IL 60098
(815) 334-3170 - Mailing address
-
Po Box 735263
Chicago, IL 606735263
Show 1 more location
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- April 14, 2025
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 207L00000X — NUCC code
- State license (1)
- Illinois #036101350
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1003856295. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
177
Distinct HCPCS
5
Medicare allowed
$18,677
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
64447 |
Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 52 | 52 | $62 | |
64450 |
Injection of anesthetic agent and/or steroid into other nerve or branch | 49 | 49 | $21 | |
76942 |
Ultrasonic guidance for needle placement | 33 | 33 | $30 | |
01402 |
Anesthesia for procedure for total knee joint replacement | 22 | 22 | $298 | |
01214 |
Anesthesia for total hip replacement | 21 | 21 | $326 |
In context: peer comparison
Among 20 peers in Rockford Anesthesiology Physician, average services per provider: 24. This provider delivers 7.4× the peer median.Open Payments
Industry payments received
All-time total
$16
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Merck Sharp & Dohme LLC | 1 | $16.13 |
By nature of payment
Frequently asked questions
What is Dr. William Weems's medical specialty?
Dr. William Weems practices Anesthesiology Physician in Rockford, IL.
Where does Dr. William Weems practice?
Dr. William Weems practices at 5875 E Riverside Blvd, Rockford, IL 611144937. Office phone: 8153989491.
What is Dr. William Weems's NPI?
Dr. William Weems's National Provider Identifier (NPI) is 1003856295, issued by NPPES.
Does Dr. William Weems accept Medicare assignment?
Yes. Dr. William Weems accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Weems commonly perform?
Top Medicare-reported procedures in 2023: Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (HCPCS 64447); Injection of anesthetic agent and/or steroid into other nerve or branch (HCPCS 64450); Ultrasonic guidance for needle placement (HCPCS 76942). Source: CMS Medicare Physician & Other Practitioners file.