JOHN GRAYSON STEWART (M.D.) – Radiation Oncology Physician, NPI 1427251412
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
203 RADIATION ONCOLOGY in GA
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Provider Addresses for JOHN GRAYSON STEWART (M.D.)
821, Saint Sebastian Way, Augusta, Richmond County, Georgia, 30901, United States
AUGUSTA, GA 309122615
Phone: (706) 721-2971
Fax: (706) 721-1937
Type: Location
P.O. BOX 2825
AUGUSTA, GA 309142825
Phone: (706) 737-4575
Fax: (706) 731-5289
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $308.
Total Amount is formed as General ($308) + Research ($0) + Ownership ($0) = $308.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: Boston Scientific Corporation ($223).
Total Amount
$308
General + Research + Ownership
Payments
7
Total payment records
General Amount
$308
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2012-10-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Past revalidation due date
Earliest CMS due date was 2023-07-31 (1047 days ago).
Enrollment records
2
Earliest due date
2023-07-31
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 |
|---|---|---|---|---|
| I20110708000359 | I | Radiation Oncology | GA | 2023-07-31 |
| I20121024000247 | I | Radiation Oncology | SC | TBD |
What to do next
- Verify current status on the CMS Revalidation Lookup Tool immediately.
- Complete revalidation in PECOS or contact your Medicare Administrative Contractor (MAC).
- Overdue revalidation can lead to deactivation of Medicare billing privileges.
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 | 711 | 106 | $0 |
| 77300 | Calculation of radiation therapy dose | 626 | 111 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 457 | 100 | $0 |
| 77014 | Ct guidance for insertion of radiation therapy fields | 281 | 64 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 242 | 147 | $0 |
Insurance plans in this area (ZIP 30912)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| RADIATION ONCOLOGY | GA | 76942 | Ultrasonic guidance imaging supervision and interpretation for insertion of needle | 14 | 14 |
| RADIATION ONCOLOGY | GA | 77263 | Management of radiation therapy, complex | 132 | 126 |
| RADIATION ONCOLOGY | GA | 77300 | Calculation of radiation therapy dose | 398 | 98 |
| RADIATION ONCOLOGY | GA | 77427 | Radiation treatment management, 5 treatments | 479 | 186 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | GA | |
| Radiation Oncology | GA | |
| - | SC | |
| Radiation Oncology | OH | |
| Nurse Practitioner | GA |
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