NPPES file of Aug 9, 2026

Mariah Barrett, PA-C

Dermatology Physician · Aiken, SC

Mariah Barrett, PA-C is a dermatology physician with a practice address in Aiken, South Carolina, and NPI 1891421079, issued on Jul 28, 2022. Check the license (South Carolina 4511, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891421079
Name
Mariah Barrett
Credential
PA-C
Primary taxonomy
Dermatology Physician 207N00000X
License number
4511 SC
Self-reported in NPPES; status is on the state search
Practice location
1520 Two Notch RD SE, Aiken, SC 29803
Phone
(803) 649-3909
Enumerated
Jul 28, 2022
Record last updated
Jul 28, 2022
Medicare enrollment
Enrolled (PECOS I20220818000552); accepts Medicare assignment
Medical or professional school
University Of South Carolina School Of Medicine, 2022
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1520 Two Notch RD SE

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sarah Johnson, DNP, FNP-BCFamily Nurse Practitioner1790408953
  2. Stephen Rozier, PA-CPhysician Assistant1255645362

Verify Mariah Barrett in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
    Search for license 4511
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the South Carolina license search

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83% fewer Medicare Part D claims than the average dermatology physician in 2024

139 Medicare Part D claims for 76 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.

  1. Mariah Barrett139
  2. Specialty average797

Most prescribed

  1. Ketoconazole29 claims
  2. Triamcinolone Acetonide28 claims
  3. Hydrocortisone24 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): 96.2 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.

  1. Qualityout of 100 · 30% of the final score90.4
  2. Costout of 100 · 30%100.0
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $1,588.40

51 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mariah Barrett$1,588.40
  2. Specialty average$8,544.61

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Advanced Dermatology OF SC PCSpartanburg, SC
  2. West Virginia Dermatology And Skin Surgery CenterS Charleston, WV

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mariah Barrett among 217 dermatology physician records in South Carolina

Mariah Barrett, PA-C is one of 217 dermatology physician records with a practice address in South Carolina. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 91% of them.

  • NPI issued2022 · 91% of these records are older, 6% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2022 · median 2008 among the 153 with a school on file
  • Record last updated2022 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in South Carolina

There are 217 dermatology physician records in South Carolina.

The 8 dermatology physician records with the nearest ZIP codes

  1. John Cook, M.D.Aiken, SC 298031962406900
  2. Katherine Hamlet, M.D.Aiken, SC 298031831241652
  3. Kendall Buchanan, MDAiken, SC 298011811359334
  4. Richard Chesser, MDAiken, SC 298011306890454
  5. Eugene Lepine, MDRock Hill, SC 297321508864927
  6. Alan Anthony, MDRock Hill, SC 297301114003415
  7. Kylee Sacksteder, D.O.Rock Hill, SC 297301871918375
  8. Michael Terribile, PHYSICIAN ASSISTANTRock Hill, SC 297301720140643

Common questions

What is Mariah Barrett, PA-C's NPI number?

Mariah Barrett, PA-C's National Provider Identifier (NPI) is 1891421079, issued on Jul 28, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Mariah Barrett, PA-C located?

The NPPES record lists a practice address at 1520 Two Notch RD SE, Aiken, SC, 29803. Phone: (803) 649-3909. Providers update this record themselves, so call before visiting.

How can I verify Mariah Barrett, PA-C's license?

NPPES lists South Carolina license number 4511, 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 Mariah Barrett, PA-C prescribe under Medicare Part D?

In 2024, Mariah Barrett, PA-C had 139 Medicare Part D claims for 76 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.

What is Mariah Barrett, PA-C's MIPS final score?

The 2023 MIPS final score is 96.2 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.