Quick answers
- Does John G. Stewart accept Medicare assignment?
- Yes. Medicare's clinician data says John G. Stewart accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does John G. Stewart see?
- In 2024, CMS data shows 311 Original Medicare patients and 2,259 services for John G. Stewart. This counts Original Medicare only and measures volume, not quality.
- What is John G. Stewart's NPI number?
- 1427251412. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for John G. Stewart, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 311 |
|---|---|
| Services billed to Medicare | 2,259 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)607 services
- Calculation of radiation therapy dose (77300)418 services
- Ct guidance for insertion of radiation therapy fields (77014)254 services
- Radiation treatment management, 5 treatment sessions (77427)235 services
- Design and construction of complex radiation treatment device (77334)153 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
- Arthritis45%
- Diabetes31%
- Chronic kidney disease31%
Hospitals where John G. Stewart works
Medicare's Facility Affiliation Data lists John G. Stewart at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Doctors HospitalAugusta, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 110177
- Piedmont Augusta HospitalAugusta, GA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 110028
- University McDuffie County Regional Medical CenterThomson, GA · Acute Care Hospital · Emergency services: listed by Medicare · CCN 110111
- Wellstar MCG Health, Affiliated With Med ColAugusta, GA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 110034
Practice locations
Addresses where John G. Stewart is enrolled with Medicare (CMS data updated October 2, 2026).
- 1350 Walton WayAugusta, GA 30901 (706) 722‑9011
- 150 Bluff AveNorth Augusta, SC 29841 (706) 736‑1830
- 3624 J Dewey Gray Cir, Suite 103Augusta, GA 30909 (706) 650‑6700
- 3651 Wheeler RdAugusta, GA 30909 (706) 651‑3232
- 821 Saint Sebastian WayAugusta, GA 30912 (706) 721‑2971
Group practices
Medicare enrollment lists John G. Stewart as a member of these groups (CMS data updated October 2, 2026).
- Augusta Oncology Associates PC36 clinicians in the group
- Radiation Oncology Associates5 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Augusta
Clinicians with the same Medicare primary specialty in Augusta, GA — not a recommendation.
Other clinicians in Augusta Oncology Associates PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Georgia School Of Medicine |
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427251412 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians