GARY L LARSON (M.D.) – Radiation Oncology Physician, NPI 1578599304
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
57 RADIATION ONCOLOGY in OK
Provider Addresses for GARY L LARSON (M.D.)
4401 S Western Ave
Oklahoma City, OK 731093413
Phone: (405) 636-7342
Type: Location
The Expressways, 2525, Northwest Expressway, Oklahoma City, Oklahoma County, Oklahoma, 73112, United States
SUITE 404
OKLAHOMA CITY, OK 731127230
Phone: (405) 607-4520
Fax: (405) 607-4525
Type: Location
Box, Sequoyah County, Oklahoma, United States
OKLAHOMA CITY, OK 731248856
Phone: (405) 607-4520
Fax: (405) 607-4525
Type: Mailing
5911 W MEMORIAL RD
OKLAHOMA CITY, OK 731422015
Phone: (405) 773-6530
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 $76.
Total Amount is formed as General ($76) + Research ($0) + Ownership ($0) = $76.
Last reported payment date: 2024-02-14 • Largest payer in this snapshot: MIM Software Inc. ($76).
Total Amount
$76
General + Research + Ownership
Payments
1
Total payment records
General Amount
$76
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-02-14
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| MIM Software Inc. | $76 |
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: 2005-08-25
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 |
|---|---|---|---|---|
| I20050825000854 | I | Radiation Oncology | OK | 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 | 822 | 147 | $0 |
| G6002 | Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 247 | 51 | $0 |
| 77300 | Calculation of radiation therapy dose | 193 | 60 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 191 | 66 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 173 | 81 | $0 |
Insurance plans in this area (ZIP 73109)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Radiation Oncology | OK | |
| Radiation Oncology | WA | |
| Radiation Oncology | OK | |
| Radiation Oncology | OK | |
| Radiation Oncology | OK |
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