L ROBERT WARREN (MD) – Family Medicine Physician, NPI 1558341933
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,037 FAMILY PRACTICE in IL
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Provider Addresses for L ROBERT WARREN (MD)
205, Cadillac Court, Belvidere, Belvidere Township, Boone County, Illinois, 61008, United States
BELVIDERE, IL 610081733
Phone: (815) 544-0444
Fax: (815) 544-0652
Type: Location
PO BOX 15840
LOVES PARK, IL 611325840
Phone: (815) 654-7772
Fax: (815) 654-7009
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 53 Open Payments records for all available years, with a total value of $1,961.
Total Amount is formed as General ($1,961) + Research ($0) + Ownership ($0) = $1,961.
Last reported payment date: 2024-11-19 • Largest payer in this snapshot: Janssen Pharmaceuticals, Inc ($748).
Total Amount
$1,961
General + Research + Ownership
Payments
53
Total payment records
General Amount
$1,961
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-19
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2004-08-19
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 |
|---|---|---|---|---|
| I20040819000366 | I | Family Practice | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 177 | 55 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 50 | 30 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 47 | 47 | $0 |
Insurance plans in this area (ZIP 61008)
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