JAMES L LEENSTRA (M.D.) – Radiation Oncology Physician, NPI 1174593982
Radiation Oncology Physician
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Profile Insights
NPPES metrics only — not quality of care.
186 RADIATION ONCOLOGY in WI
Provider Addresses for JAMES L LEENSTRA (M.D.)
1400 Bellinger St
Eau Claire, WI 547035222
Phone: (715) 838-5222
Type: Location
700 West Ave S
LA Crosse, WI 546014783
Phone: (608) 785-0940
Type: Location
1st Street Southwest, Rochester, Olmsted County, Minnesota, 55903, United States
ROCHESTER, MN 559050001
Phone: (507) 284-2511
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
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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: 2010-12-14
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 |
|---|---|---|---|---|
| I20060214000039 | I | Radiation Oncology | MN | TBD |
| I20101214000881 | I | Radiation 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 |
|---|---|---|---|---|
| G6002 | Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 677 | 95 | $0 |
| G6015 | Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session | 615 | 70 | $0 |
| 77300 | Calculation of radiation therapy dose | 186 | 52 | $0 |
| 77336 | Continuing radiation therapy consultation per week | 146 | 59 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 136 | 45 | $0 |
Insurance plans in this area (ZIP 54703)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| RADIATION ONCOLOGY | MN | 77427 | Radiation treatment management, 5 treatments | 128 | 53 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | WA | |
| Psychiatry, Addiction Medicine | MN | |
| - | MN | |
| - | MN | |
| - | MN | |
| - | MN | |
| O P H T H A L M O L O G Y | MN | |
| - | MN | |
| - | MN | |
| - | MN |
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