KENNETH KLEIN (MD) – Radiation Oncology Physician, NPI 1891736963
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
186 RADIATION ONCOLOGY in WI
Provider Addresses for KENNETH KLEIN (MD)
835 S Van Buren St
Green Bay, WI 543013526
Phone: (920) 433-8184
Type: Location
Sturgeon Bay, Michigan, United States
STURGEON BAY, WI 542351007
Phone: (920) 746-0090
Fax: (920) 746-1072
Type: Mailing
Sacred Heart Hospital, 900, West Clairemont Avenue, Lower Campus, Upper Campus, Eau Claire, Eau Claire County, Wisconsin, 54701, United States
EAU CLAIRE, WI 547016122
Phone: (715) 717-4121
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $16.
Total Amount is formed as General ($16) + Research ($0) + Ownership ($0) = $16.
Last reported payment date: 2024-10-04 • Largest payer in this snapshot: Regeneron Healthcare Solutions, Inc. ($16).
Total Amount
$16
General + Research + Ownership
Payments
1
Total payment records
General Amount
$16
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-04
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Regeneron Healthcare Solutions, Inc. | $16 |
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: 2025-06-23
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 7 Medicare enrollment records; no due dates published yet.
Enrollment records
7
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 |
|---|---|---|---|---|
| I20040719000247 | I | Radiation Oncology | WI | TBD |
| I20201203000485 | I | Radiation Oncology | MI | TBD |
| I20210617000385 | I | Radiation Oncology | NE | TBD |
| I20210920001010 | I | Radiation Oncology | IA | TBD |
| I20240923003548 | I | Radiation Oncology | KY | TBD |
| I20250331001107 | I | Radiation Oncology | MS | TBD |
| I20250623000014 | I | Radiation Oncology | 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 |
|---|---|---|---|---|
| 77014 | Ct guidance for insertion of radiation therapy fields | 291 | 21 | $0 |
| G6015 | Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session | 275 | 18 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 137 | 47 | $0 |
| 77300 | Calculation of radiation therapy dose | 95 | 35 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 76 | 38 | $0 |
Insurance plans in this area (ZIP 54301)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| RADIATION ONCOLOGY | WI | 77427 | Radiation treatment management, 5 treatments | 60 | 29 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Radiation Oncology | NM | |
| Radiation Oncology | IL | |
| Radiation Oncology | AR |
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