FREDERICK W WILLISON (MD) – Radiation Oncology Physician, NPI 1932177011
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
57 RADIATION ONCOLOGY in OK
Loading map...
Provider Addresses for FREDERICK W WILLISON (MD)
Ascension Saint John Medical Center, 1923, South Utica Avenue, Swan Lake, Tulsa, Tulsa County, Oklahoma, 74104, United States
TULSA, OK 741046520
Phone: (918) 744-2345
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $31.
Total Amount is formed as General ($31) + Research ($0) + Ownership ($0) = $31.
Last reported payment date: 2023-11-07 • Largest payer in this snapshot: Siemens Medical Solutions USA, Inc. ($31).
Total Amount
$31
General + Research + Ownership
Payments
1
Total payment records
General Amount
$31
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-11-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Siemens Medical Solutions USA, Inc. | $31 |
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: 2018-10-30
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 |
|---|---|---|---|---|
| I20040823000629 | I | Radiation Oncology | OK | TBD |
| I20181030003160 | I | Radiation Oncology | MO | 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 | 662 | 38 | $0 |
| 77014 | Ct guidance for insertion of radiation therapy fields | 400 | 27 | $0 |
| 77300 | Calculation of radiation therapy dose | 374 | 44 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 217 | 46 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 114 | 43 | $0 |
Insurance plans in this area (ZIP 74104)
Loading plans...
Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Critical Care (Intensivists), Nephrology | OK | |
| Hematology/Oncology, Internal Medicine | TX | |
| Nephrology, Internal Medicine | OKLAHOMA | |
| Cardiovascular Disease (Cardiology), Internal Medicine | OK | |
| R H E U M A T O L O G Y | NY | |
| Nurse Practitioner | OK | |
| Emergency Medicine | OK | |
| N E U R O S U R G E R Y | KS | |
| Nurse Practitioner | OK | |
| Internal Medicine | OK |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.