WILLIAM JAMES COWDEN (M.D.) – Surgery Physician, NPI 1033384904
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,422 GENERAL SURGERY in IL
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Provider Addresses for WILLIAM JAMES COWDEN (M.D.)
2300, North Rockton Avenue, Rockford, Winnebago County, Illinois, 61103, United States
SUITE 304
ROCKFORD, IL 611033619
Phone: (815) 964-3333
Fax: (815) 964-3134
Type: Location
7026, Cardigan Way, Rockford, Winnebago County, Illinois, 61114, United States
ROCKFORD, IL 611148172
Phone: (815) 964-3333
Fax: (815) 964-3134
Type: Mailing
4063 E LAFAYETTE AVE
GILBERT, AZ 852984129
Phone: (815) 218-2528
Fax: (815) 964-3134
Type: Mailing
2929 E THOMAS RD
PHOENIX, AZ 850168034
Phone: (602) 470-5000
Fax: (815) 964-3134
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2022-06-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20090811000463 | I | General Surgery | IL | TBD |
| I20220610000772 | I | General Surgery | AZ | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 61103)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | AZ | |
| - | AZ | |
| - | AZ | |
| General Surgery, Critical Care (Intensivists) | MI | |
| General Surgery | AZ | |
| - | AZ | |
| Diagnostic Radiology | NC | |
| - | AZ | |
| - | AZ | |
| - | AZ |
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