Dr. Grayson T. Sumner, DO
- Medicare services, 2024
- 2,668
- Medicare patients, 2024
- 409
- Part D claims, 2024
- 10,313
- MIPS score, 2024
- 95
- Hospital affiliations
- 3
- Practice address
- 1325 Spring Street, Greenwood, SC 29646
- Practice phone
- Call (615) 562-9545
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Self Regional Healthcare - Greenwood
Clinical Lab - Full Service · Greenwood, South Carolina
Find Dr. Sumner'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. Grayson T. Sumner is a family medicine physician in Greenwood, South Carolina
Dr. Sumner practices at Self Regional Healthcare - Greenwood in Greenwood, South Carolina.
Dr. Sumner's NPI, 1437508967, was assigned on June 6, 2016. Dr. Sumner holds South Carolina license 39238.
- NPI
- 1437508967NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224307335
- NPI enumeration date
- June 6, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (615) 562-9545
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Grayson T. Sumner practices at Self Regional Healthcare - Greenwood in Greenwood, South Carolina
Dr. Sumner's primary practice is Self Regional Healthcare - Greenwood, at 1325 Spring Street, Greenwood, SC 29646. The practice phone is (615) 562-9545.
- Self Regional Healthcare - Greenwood1325 Spring Street, Greenwood, SC 29646Phone(615) 562-9545
Source: Dmand AI Affiliation Data
Dr. Grayson T. Sumner is affiliated with 6 sites of care and 3 medical groups
Dr. Sumner's primary practice is Self Regional Healthcare - Greenwood in Greenwood, South Carolina. Dr. Sumner is also affiliated with Self Regional Healthcare. The medical group on file is Self Medical Group. Dmand AI also links Dr. Sumner to 2 more hospitals, 2 home health agencies and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Grayson T. Sumner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sumner practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Self Regional Healthcare - Greenwood | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Grayson T. Sumner is one of 2,356 family medicine physicians in South Carolina
Family medicine is Dr. Sumner's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Sumner is licensed in South Carolina.
Specialties and state licenses
- Family medicine, South CarolinaPrimary
Family medicine physicians near Dr. Sumner
Counts of family medicine physicians 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. Grayson T. Sumner billed Medicare for 2,668 services in 2024
CMS data shows 2,668 Medicare services from Dr. Sumner across 18 procedure codes in 2024, for 409 Medicare patients. Medicare paid $130,932 for them. Every service was in an office.
Dr. Sumner's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,1552024: 1,0539%
- Other services
- 2023: 3782024: 883134%
- Surgery
- 2023: 3992024: 3707%
- Lab and pathology
- 2023: 2852024: 24414%
- Tests and treatments
- 2023: 1702024: 11831%
- Drugs given in the office
- 2023: 1002024: 0100%
Dr. Sumner compared with the South Carolina median for family medicine physicians, 2024
- Dr. Sumner
- South Carolina median
- Medicare services
- 2,668vs 7443.6 times
- Medicare patients
- 409vs 23276% above
- Part D claims
- 9,642vs 1,0239.4 times
Medians across 2,295 family medicine physicians in South Carolina with Dmand AI profiles that report each measure.
Dr. Sumner'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sumner and other family medicine physicians in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Grayson T. Sumner treated 409 Medicare patients in 2024, average age 74
CMS counts 409 Medicare patients who saw Dr. Sumner in 2024. The largest group is 65 to 74, with 202 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 4% are also on Medicaid. Their average risk score is 0.88, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sumner's median patient age at 70, with 41% women.
Dr. Sumner's Medicare patients by age, 2024
Dr. Sumner's Medicare patients by sex, 2024
- Women16841%
- Men24159%
Chronic conditions among Dr. Sumner's Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Arthritis32%
- Diabetes27%
- Ischemic heart disease20%
- Anxiety17%
- Chronic kidney disease17%
- Atrial fibrillation12%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sumner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women41%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Grayson T. Sumner wrote 10,313 Medicare Part D claims in 2024
In 2024, Dr. Sumner wrote 10,313 Medicare Part D claims for 691 patients. 88% of them were for generic drugs. CMS names the drug for 9,642 of them, across 140 drugs with 11 or more claims each, at $848,609 in total drug cost. In 2023, CMS named 8,752 claims across 138 drugs.
Dr. Sumner's Part D claims by kind of drug, 2024
- Generic9,044 claims88%
- Brand-name1,227 claims12%
- Other42 claims0%
Dr. Sumner'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. Sumner's Part D claims, 2024
- Opioids0%50 of 10,313 claims
- Antibiotics1%100 of 10,313 claims
- Antipsychotics, patients 65 and over0%17 of 10,313 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: 8,7522024: 9,64210%
Drugs named by CMS: 140 in 2024, 138 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. Grayson T. Sumner scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Sumner for performance year 2024, reported through an alternative payment model (APM). Dr. Sumner accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Sumner's MIPS scores, performance year 2024
- 95of 100Final score
- 89.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Grayson T. Sumner received $1,256 in industry payments from 2018 to 2025
CMS Open Payments shows 69 general payments to Dr. Sumner from 16 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $294.
General payments to Dr. Sumner by program year, 2018 to 2025
Companies that paid Dr. Sumner the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Grayson T. Sumner'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 DataDmand AI Org Hierarchy 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Grayson T. Sumner
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. Grayson T. Sumner's NPI number?
Dr. Grayson T. Sumner's NPI number is 1437508967. It was assigned on June 6, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Grayson T. Sumner?
Dr. Grayson T. Sumner is a family medicine physician in Greenwood, South Carolina. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Grayson T. Sumner practice?
Dr. Sumner practices at 1325 Spring Street, Greenwood, SC 29646. Dr. Sumner's primary practice is Self Regional Healthcare - Greenwood in Greenwood, South Carolina. Dmand AI also links Dr. Sumner to 2 hospitals, 2 home health agencies and 2 medical groups.
What is Dr. Grayson T. Sumner's office phone number?
The practice phone on file for Dr. Sumner is (615) 562-9545.
What is Dr. Grayson T. Sumner's medical license number?
Dr. Sumner holds South Carolina license 39238.
Which hospitals is Dr. Grayson T. Sumner affiliated with?
Dr. Sumner is affiliated with Self Regional Healthcare. Dmand AI links Dr. Sumner to 2 more hospitals.
What medical group is Dr. Grayson T. Sumner part of?
Dr. Sumner is linked to Self Medical Group. Dmand AI links Dr. Sumner to 2 more medical groups.
Does Dr. Grayson T. Sumner accept Medicare?
Yes. CMS data shows Dr. Sumner billed Medicare for 2,668 services in 2024, and Dr. Sumner accepts Medicare assignment.
What is Dr. Grayson T. Sumner's MIPS score?
Dr. Sumner's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Grayson T. Sumner see?
CMS counts 409 Medicare patients who saw Dr. Sumner in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Grayson T. Sumner bill to Medicare?
In 2024, Dr. Sumner's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and surgery: heart and blood vessels (36415).
What drugs does Dr. Grayson T. Sumner prescribe most?
In 2024 Medicare Part D data, Dr. Sumner's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
Has Dr. Grayson T. Sumner received payments from drug or device companies?
CMS Open Payments shows $1,256 in general payments to Dr. Sumner from 16 companies from 2018 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Grayson T. Sumner been practicing?
Dr. Sumner graduated from medical school in 2016, 10 years ago.
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