DR. WILLIAM B WEEMS (MD) – Anesthesiology Physician, NPI 1003856295
Anesthesiology Physician
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Profile Insights
NPPES metrics only — not quality of care.
2,631 ANESTHESIOLOGY in IL
Provider Addresses for DR. WILLIAM B WEEMS (MD)
Centegra Memorial Medical Center
3701 Doty Road
Woodstock, IL 60098
Phone: (815) 334-3170
Type: Location
10400 Haligus Rd
Huntley, IL 601429553
Phone: (224) 654-0000
Fax: (224) 654-0000
Type: Location
1425 N Randall Rd
Elgin, IL 601232300
Phone: (847) 742-9800
Type: Location
520, East 22nd Street, Highland Hills, Lombard, DuPage County, Illinois, 60148, United States
LOMBARD, IL 601486110
Phone: (630) 874-2542
Fax: (630) 874-2642
Type: Mailing
Centegra Hospital-Woodstock Heliport, US 14, Woodstock, McHenry County, Illinois, 60033, United States
3701 DOTY ROAD
WOODSTOCK, IL 60098
Phone: (815) 334-3170
Type: Location
PO BOX 735263
CHICAGO, IL 606735263
Phone: (815) 398-9491
Fax: (815) 381-7498
Type: Mailing
5875 E RIVERSIDE BLVD
ROCKFORD, IL 611144937
Phone: (815) 398-9491
Fax: (815) 381-7498
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $99.
Total Amount is formed as General ($99) + Research ($0) + Ownership ($0) = $99.
Last reported payment date: 2024-01-19 • Largest payer in this snapshot: Merck Sharp & Dohme LLC ($99).
Total Amount
$99
General + Research + Ownership
Payments
5
Total payment records
General Amount
$99
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-01-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merck Sharp & Dohme LLC | $99 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-08-06
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040806000861 | I | Anesthesiology | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 64447 | Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 52 | 52 | $0 |
| 64450 | Injection of anesthetic agent and/or steroid into other nerve or branch | 49 | 49 | $0 |
| 76942 | Ultrasonic guidance for needle placement | 33 | 33 | $0 |
| 01402 | Anesthesia for procedure for total knee joint replacement | 22 | 22 | $0 |
| 01214 | Anesthesia for total hip replacement | 21 | 21 | $0 |
Insurance plans in this area (ZIP 60098)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ANESTHESIOLOGY | IL | 00790 | Anesthesia for procedure in upper abdomen including use of an endoscope | 12 | 12 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nephrology, Internal Medicine | IL | |
| A N E S T H E S I O L O G Y | IL | |
| - | MN | |
| - | IL | |
| - | IL | |
| Rheumatology, Internal Medicine | IL | |
| - | IL | |
| Internal Medicine | IL | |
| P S Y C H I A T R Y | IL | |
| - | IL |
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