DR. RICHARD F WARREN (MD) – Medical Oncology Physician, NPI 1013981349
Medical Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DR. RICHARD F WARREN (MD)
122, East College Avenue, Appleton, Outagamie County, Wisconsin, 54911, United States
APPLETON, WI 549115794
Phone: (920) 996-3264
Fax: (920) 830-5910
Type: Mailing
2301, East 93rd Street, Pill Hill, Calumet Heights, Chicago, Hyde Park Township, Cook County, Illinois, 60617, United States
SUITE 110
CHICAGO, IL 606173913
Phone: (773) 731-2982
Fax: (773) 731-3328
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $428.
Total Amount is formed as General ($428) + Research ($0) + Ownership ($0) = $428.
Last reported payment date: 2023-11-08 • Largest payer in this snapshot: Janssen Biotech, Inc. ($122).
Total Amount
$428
General + Research + Ownership
Payments
4
Total payment records
General Amount
$428
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-11-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Janssen Biotech, Inc. | $122 |
| ABBVIE INC. | $111 |
| Eisai Inc. | $106 |
| AstraZeneca Pharmaceuticals LP | $89 |
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: 2019-07-24
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 |
|---|---|---|---|---|
| I20190724000500 | I | Hematology/Oncology | WI | 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 | 176 | 54 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 162 | 102 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 19 | 19 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 16 | 16 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 13 | 12 | $0 |
Insurance plans in this area (ZIP 54911)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | WI | |
| Family Practice | WI | |
| - | FL | |
| Hospitalist, Internal Medicine | MI | |
| P S Y C H I A T R Y | WI | |
| - | WA | |
| Physician Assistant | WI | |
| Family Practice | WI | |
| Nurse Practitioner | WI | |
| - | WI |
Reviews
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