DR. SANTOSH V YAJNIK (M.D.) – Radiation Oncology Physician, NPI 1083605067
Radiation Oncology Physician
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Profile Insights
NPPES metrics only — not quality of care.
186 RADIATION ONCOLOGY in WI
Provider Addresses for DR. SANTOSH V YAJNIK (M.D.)
9000 W Wisconsin Ave
Milwaukee, WI 532264874
Phone: (414) 346-8000
Fax: (414) 346-8010
Type: Location
700, Commerce Drive, Oak Brook, DuPage County, Illinois, 60523, United States
SUITE 500
OAK BROOK, IL 605231546
Phone: (847) 698-0600
Fax: (847) 698-0601
Type: Mailing
900, West Nelson Street, Lake View, Lakeview, Chicago, Lake View Township, Cook County, Illinois, 60657, United States
CHICAGO, IL 606576704
Phone: (773) 296-7076
Fax: (773) 296-7735
Type: Location
9200 W WISCONSIN AVE
MILWAUKEE, WI 532263522
Phone: (414) 805-4400
Fax: (414) 805-4369
Type: Mailing
3200 Pleasant Valley Rd
West Bend, WI 530959274
Phone: (262) 836-7200
Fax: (262) 836-7201
Type: Location
W180N8085 Town Hall Rd
Menomonee Falls, WI 530513518
Phone: (262) 257-5151
Fax: (262) 253-7801
Type: Location
7901 S 6th St
Oak Creek, WI 531542010
Phone: (414) 346-8000
Fax: (414) 346-8010
Type: Location
4405 Weaver Pkwy
Warrenville, IL 605553269
Phone: (630) 933-7811
Fax: (630) 352-5349
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.
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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: 2023-10-30
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 |
|---|---|---|---|---|
| I20040813001209 | I | Radiation Oncology | IL | TBD |
| I20231030001302 | 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 |
|---|---|---|---|---|
| 77014 | Ct guidance for insertion of radiation therapy fields | 261 | 60 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 120 | 104 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 101 | 50 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 74 | 23 | $0 |
| 77300 | Calculation of radiation therapy dose | 68 | 20 | $0 |
Insurance plans in this area (ZIP 53226)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | IL | |
| Diagnostic Radiology, Interventional Radiology | IL | |
| P A T H O L O G Y | IL | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology), Internal Medicine | IL | |
| G A S T R O E N T E R O L O G Y | IL | |
| Internal Medicine | IL | |
| Cardiac Electrophysiology, Cardiovascular Disease (Cardiology), Internal Medicine | MN | |
| - | IL | |
| Physical Therapist In Private Practice | IL | |
| Nurse Practitioner | IL |
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