Dr. John Grayson Stewart, MD
- Medicare services, 2024
- 2,227
- Medicare patients, 2024
- 311
- Part D claims, 2024
- 259
- MIPS score, 2024
- 75
- Hospital affiliations
- 4
- Practice address
- 3696 Wheeler Rd, Augusta, GA 30909-6520
- Practice phone
- Call (706) 736-1830
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ao Multispeciality
Multi-specialty group site · Augusta, Georgia
Find Dr. Stewart's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Grayson Stewart is a radiation oncologist in Augusta, Georgia
Dr. Stewart practices at Ao Multispeciality in Augusta, Georgia.
Dr. Stewart's NPI, 1427251412, was assigned on June 7, 2007. Dr. Stewart graduated from Medical College of Georgia School of Medicine in 2006. Dr. Stewart holds Georgia license 65901.
- NPI
- 1427251412NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820276132
- NPI enumeration date
- June 7, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (706) 736-1830
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Grayson Stewart practices at Ao Multispeciality in Augusta, Georgia
Dr. Stewart's primary practice is Ao Multispeciality, at 3696 Wheeler Rd, Augusta, GA 30909-6520. The practice phone is (706) 736-1830.
- Ao Multispeciality3696 Wheeler Rd, Augusta, GA 30909-6520Phone(706) 736-1830
Source: Dmand AI Affiliation Data
Dr. John Grayson Stewart is affiliated with 8 sites of care and 4 medical groups
Dr. Stewart's primary practice is Ao Multispeciality in Augusta, Georgia. Dr. Stewart is also affiliated with Wellstar MCG Health Medical Center. The medical group on file is Wellstar Medical Group. Dmand AI also links Dr. Stewart to 3 more hospitals, 3 group practices and clinics and 3 medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Grayson Stewart's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stewart practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ao Multispeciality | Available with a free account |
| +7 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Grayson Stewart is one of 165 radiation oncologists in Georgia
Radiation oncology is Dr. Stewart's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Stewart is licensed in Georgia.
Specialties and state licenses
- Radiation oncology, GeorgiaPrimary
Radiation oncologists near Dr. Stewart
Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Grayson Stewart billed Medicare for 2,227 services in 2024
CMS data shows 2,227 Medicare services from Dr. Stewart across 22 procedure codes in 2024, for 311 Medicare patients. Medicare paid $143,738 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Stewart's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2,0852024: 1,42732%
- Other services
- 2023: 7112024: 60715%
- Office and hospital visits
- 2023: 1902024: 1748%
- Surgery
- 2023: 192024: 19No change
Dr. Stewart compared with the Georgia median for radiation oncologists, 2024
- Dr. Stewart
- Georgia median
- Medicare services
- 2,227vs 1,32868% above
- Medicare patients
- 311vs 1542.0 times
- Part D claims
- 213vs 444.8 times
Medians across 164 radiation oncologists in Georgia with Dmand AI profiles that report each measure.
Dr. Stewart's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Stewart?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Stewart and other radiation oncologists in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Grayson Stewart treated 311 Medicare patients in 2024, average age 75
CMS counts 311 Medicare patients who saw Dr. Stewart in 2024. The largest group is 65 to 74, with 145 patients. 75% of them have cancer, and 75% have high blood pressure. 4% are also on Medicaid. Their average risk score is 1.40, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Stewart's median patient age at 72, with 49% women.
Dr. Stewart's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Stewart's Medicare patients by sex, 2024
- Women13945%
- Men17255%
Chronic conditions among Dr. Stewart's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol75%
- Arthritis45%
- Chronic kidney disease31%
- Diabetes31%
- Ischemic heart disease29%
- Mood disorders22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Stewart's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Grayson Stewart wrote 259 Medicare Part D claims in 2024
In 2024, Dr. Stewart wrote 259 Medicare Part D claims for 101 patients. 100% of them were for generic drugs. CMS names the drug for 213 of them, across 7 drugs with 11 or more claims each, at $2,392 in total drug cost. In 2023, CMS named 145 claims across 4 drugs.
Dr. Stewart's Part D claims by kind of drug, 2024
- Generic258 claims100%
- Brand-name and other1 claims0%
Dr. Stewart's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Stewart's Part D claims, 2024
- Opioids18%46 of 259 claims
- Antibiotics17%43 of 259 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1452024: 21347%
Drugs named by CMS: 7 in 2024, 4 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. John Grayson Stewart scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Stewart for performance year 2024, reported as part of a group. Dr. Stewart accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John Grayson Stewart received $4,477 in industry payments from 2016 to 2025
CMS Open Payments shows 63 general payments to Dr. Stewart from 16 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 51% of the total. Novocure Inc. paid the most, $2,466.
General payments to Dr. Stewart by program year, 2016 to 2025
General payments to Dr. Stewart by kind, 2016 to 2025
- Food and beverage$2,28751%
- Consulting fees$1,83441%
- Honoraria$3508%
- Education$60%
Companies that paid Dr. Stewart the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Grayson Stewart graduated from Medical College of Georgia School of Medicine
Dr. Stewart graduated from Medical College of Georgia School of Medicine in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Grayson Stewart's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John Grayson Stewart
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John Grayson Stewart's NPI number?
Dr. John Grayson Stewart's NPI number is 1427251412. It was assigned on June 7, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. John Grayson Stewart?
Dr. John Grayson Stewart is a radiation oncologist in Augusta, Georgia. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. John Grayson Stewart practice?
Dr. Stewart practices at 3696 Wheeler Rd, Augusta, GA 30909-6520. Dr. Stewart's primary practice is Ao Multispeciality in Augusta, Georgia. Dmand AI also links Dr. Stewart to 3 hospitals, 3 group practices and clinics and 3 medical groups.
What is Dr. John Grayson Stewart's office phone number?
The practice phone on file for Dr. Stewart is (706) 736-1830.
What is Dr. John Grayson Stewart's medical license number?
Dr. Stewart holds Georgia license 65901.
Which hospitals is Dr. John Grayson Stewart affiliated with?
Dr. Stewart is affiliated with Wellstar MCG Health Medical Center. Dmand AI links Dr. Stewart to 3 more hospitals.
What medical group is Dr. John Grayson Stewart part of?
Dr. Stewart is linked to Wellstar Medical Group. Dmand AI links Dr. Stewart to 3 more medical groups.
Does Dr. John Grayson Stewart accept Medicare?
Yes. CMS data shows Dr. Stewart billed Medicare for 2,227 services in 2024, and Dr. Stewart accepts Medicare assignment.
What is Dr. John Grayson Stewart's MIPS score?
Dr. Stewart's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. John Grayson Stewart see?
CMS counts 311 Medicare patients who saw Dr. Stewart in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. John Grayson Stewart bill to Medicare?
In 2024, Dr. Stewart's most billed Medicare services were medicare service (G6002), radiation oncology (77300) and radiation oncology (77014).
Where did Dr. John Grayson Stewart go to medical school?
Dr. Stewart graduated from Medical College of Georgia School of Medicine in 2006.
What drugs does Dr. John Grayson Stewart prescribe most?
In 2024 Medicare Part D data, Dr. Stewart's most prescribed drugs by claims were Tamsulosin HCl, Oxycodone-Acetaminophen and Ciprofloxacin HCl.
Has Dr. John Grayson Stewart received payments from drug or device companies?
CMS Open Payments shows $4,477 in general payments to Dr. Stewart from 16 companies from 2016 to 2025. The largest total came from Novocure Inc.
How long has Dr. John Grayson Stewart been practicing?
Dr. Stewart graduated from medical school in 2006, 20 years ago.
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