Nathan Koali'i Barron, DO
Hospitalist Physician · Greenville, SC
Nathan Koali'i Barron, DO is a hospitalist physician with a practice address in Greenville, South Carolina, and NPI 1336761196, issued on May 14, 2020. Check the license (South Carolina 83223, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Nathan Koali'i Barron
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 83223 SC
2023-01661 NC
Self-reported in NPPES; status is on the state search - Practice location
- 701 Grove RD FL 5, Greenville, SC 29605
- Phone
- (864) 455-4411
- Enumerated
- May 14, 2020
- Record last updated
- Aug 21, 2025
- Fax
- (864) 455-4480
- Medicare enrollment
- Enrolled (PECOS I20250819001903); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 470 in South Carolina → Look up another NPI →
Also registered at 701 Grove RD FL 5
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Fuad Ahmad, M.D.Hospitalist Physician1093734667
- Ileen AikenNurse Practitioner1861989147
- Omar Alexander, M.D.Hospitalist Physician1679735047
- Mary Ann AllstonFamily Medicine Physician1104490150
- Grace Anastasio, MDHospitalist Physician1780328898
Verify Nathan Koali'i Barron in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 83223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average hospitalist physician in 2024
221 Medicare Part D claims for 93 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Levetiracetam12 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 practice group's MIPS final score for 2023 (Medicare payment program): 98.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Prisma Health University Medical GroupGreenville, SC
- Wake Forest University Health SciencesWinston Salem, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Koali'i Barron among 470 hospitalist physician records in South Carolina
Nathan Koali'i Barron, DO is one of 470 hospitalist physician records with a practice address in South Carolina. 93% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 84% of them.
- NPI issued2020 · 84% of these records are older, 10% newer
- In a Medicare fileYes · 93% of these records are
- In the CMS Doctors and Clinicians fileYes · 87% of these records are
- Graduated2020 · median 2011 among the 409 with a school on file
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
140 hospitalist physician records list a practice address in Greenville
They are 140 of the 10,264 NPPES records with a practice address in Greenville, and 470 hospitalist physician records in South Carolina.
All 470 in South Carolina → Every provider in Greenville → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Bonnie Barr, M.D.Greenville, SC 296051437108602
- Haritha Boppana, MDGreenville, SC 296051750386454
- Michael Cain, M.D.Greenville, SC 296051922058494
- Robert Cartledge, M.D.Greenville, SC 296051043262561
- Grazyna Charowska, M.D.Greenville, SC 296051992755599
- Steven Connelly, MDGreenville, SC 296051780643981
- John Gemmell, MDGreenville, SC 296051750338679
- Kevin Gilroy, M.D.Greenville, SC 296051679531008
Common questions
What is Nathan Koali'i Barron, DO's NPI number?
Nathan Koali'i Barron, DO's National Provider Identifier (NPI) is 1336761196, issued on May 14, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Koali'i Barron, DO located?
The NPPES record lists a practice address at 701 Grove RD FL 5, Greenville, SC, 29605. Phone: (864) 455-4411. Providers update this record themselves, so call before visiting.
How can I verify Nathan Koali'i Barron, DO's license?
NPPES lists South Carolina license number 83223, 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 Nathan Koali'i Barron, DO prescribe under Medicare Part D?
In 2024, Nathan Koali'i Barron, DO had 221 Medicare Part D claims for 93 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Nathan Koali'i Barron, DO's MIPS final score?
The 2023 MIPS final score is 98.3 of 100, reported for the practice group. 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.