Grayson Sumner, DO
Family Medicine Physician · Greenwood, SC
Grayson Sumner, DO is a family medicine physician with a practice address in Greenwood, South Carolina, and NPI 1437508967, issued on Jun 6, 2016. Check the license (South Carolina 39238, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Grayson Sumner
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 39238 SC
Self-reported in NPPES; status is on the state search - Practice location
- 110 Highway 246 N, Greenwood, SC 29649
- Phone
- (864) 725-1750
- Enumerated
- Jun 6, 2016
- Record last updated
- Oct 7, 2024
- Fax
- (864) 725-1762
- Medicare enrollment
- Enrolled (PECOS I20170705003027); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,700 in South Carolina → Look up another NPI →
Also registered at 110 Highway 246 N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mayada Elian, MDFamily Medicine Physician1992186027
- Linsey McCallum, PA-CPhysician Assistant1386437846
Verify Grayson Sumner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 39238Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average family medicine physician in 2024
10,313 Medicare Part D claims for 691 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 50 claims were for opioids.
Most prescribed
- Atorvastatin Calcium552 claims
- Amlodipine Besylate527 claims
- Lisinopril526 claims
- Rosuvastatin Calcium401 claims
- Omeprazole344 claims
- Losartan Potassium327 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 96.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $467.45
25 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
3 hospitals and group practices
- Self Regional HealthcareGreenwood, SC · Acute Care Hospitals4 of 5 stars
- Self Medical GroupGreenwood, SC
- Self Regional Healthcare PartnersEdgefield, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Grayson Sumner among 2,700 family medicine physician records in South Carolina
Grayson Sumner, DO is one of 2,700 family medicine physician records with a practice address in South Carolina. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 71% of them.
- NPI issued2016 · 71% of these records are older, 27% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2016 · median 2006 among the 1,638 with a school on file
- Record last updated2024 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
90 family medicine physician records list a practice address in Greenwood
They are 90 of the 1,262 NPPES records with a practice address in Greenwood, and 2,700 family medicine physician records in South Carolina.
All 2,700 in South Carolina → Every provider in Greenwood → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Darly Bernardo, MDGreenwood, SC 296491760481055
- Charles Bruyere, M.D.Greenwood, SC 296491124266911
- Bryan Ellenberg, MDGreenwood, SC 296491922092345
- John Ergle, MDGreenwood, SC 296491538153861
- Michelle Floyd, MDGreenwood, SC 296491710959424
- Cara Friez, MDGreenwood, SC 296491841284254
- Anderson Funke, M.D.Greenwood, SC 296491497783278
- Jason Gosnell, DOGreenwood, SC 296491750519278
Common questions
What is Grayson Sumner, DO's NPI number?
Grayson Sumner, DO's National Provider Identifier (NPI) is 1437508967, issued on Jun 6, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Grayson Sumner, DO located?
The NPPES record lists a practice address at 110 Highway 246 N, Greenwood, SC, 29649. Phone: (864) 725-1750. Providers update this record themselves, so call before visiting.
How can I verify Grayson Sumner, DO's license?
NPPES lists South Carolina license number 39238, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grayson Sumner, DO prescribe under Medicare Part D?
In 2024, Grayson Sumner, DO had 10,313 Medicare Part D claims for 691 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Grayson Sumner, DO's MIPS final score?
The 2023 MIPS final score is 96.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.