NPPES file of Aug 9, 2026

Keoni Nguyen, D.O.

Dermatology Physician · Mason, OH

Keoni Nguyen, D.O. is a dermatology physician with a practice address in Mason, Ohio, and NPI 1831388198, issued on Oct 23, 2007. Check the license (Ohio 34.010172, as entered in NPPES) on the State Medical Board of Ohio; 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
1831388198
Name
Keoni Nguyen
Credential
D.O.
Primary taxonomy
Dermatology Physician 207N00000X
License number
34.010172 OH
Self-reported in NPPES; status is on the state search
Practice location
4834 Socialville Foster RD, Mason, OH 45040
Phone
(134) 591-9885
Enumerated
Oct 23, 2007
Record last updated
Jan 22, 2025
Fax
(513) 459-1845
Medicare enrollment
Enrolled (PECOS I20120423000582); accepts Medicare assignment
Medical or professional school
Kansas City University Of Physicians And Surgeons, 2006
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 4834 Socialville Foster RD

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

  1. David Aichholz, M.D.Obstetrics & Gynecology Physician1881678787
  2. Kristine Cameron, CNPAdult Health Nurse Practitioner1659530376
  3. Gregory Davis, D.D.S.General Practice Dentistry1316960438
  4. John Doscher, MDPediatrics Physician1598735318
  5. Gregory Hornung, DMDDentist1932113321
  6. Paul Korn, MDPediatrics Physician1811967466

Verify Keoni Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersState Medical Board of Ohio
    Search for license 34.010172
    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 Ohio license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.2 times the Medicare Part D claims of the average dermatology physician in 2024

1,771 Medicare Part D claims for 551 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 49 claims were for opioids.

  1. Keoni Nguyen1,771
  2. Specialty average797

Most prescribed

  1. Clobetasol Propionate402 claims
  2. Fluorouracil257 claims
  3. Triamcinolone Acetonide204 claims
  4. Desloratadine182 claims
  5. Ketoconazole96 claims
  6. Hydrocortisone85 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): 100 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.

  1. Qualityout of 100 · 30% of the final score100.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $171.71

3 payments; by number, the most common kind was food and beverage; the largest payer was Kerecis Limited. 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. Keoni Nguyen$171.71
  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 one group practice

  1. Advanced Dermatology OF Ohio, IncMason, OH

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

Keoni Nguyen among 507 dermatology physician records in Ohio

Keoni Nguyen, D.O. is one of 507 dermatology physician records with a practice address in Ohio. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.

  • NPI issued2007 · 44% of these records are older, 46% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2006 · median 2007 among the 376 with a school on file
  • Record last updated2025 · 57% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in Ohio

There are 507 dermatology physician records in Ohio.

The 8 dermatology physician records with the nearest ZIP codes

  1. Jude Khatib, MDMason, OH 450401982233896
  2. Samir Patel, MDMason, OH 450401073552261
  3. Stephanie Sayles, D.O.Mason, OH 450401730522434
  4. Samar Sheriff, MDMason, OH 450401649730276
  5. Elizabeth Uhlenhake, MDMason, OH 450401215168745
  6. Areej Usmani, MDMason, OH 450401033748801
  7. Nathan Weir, M.D., PH.D.Mason, OH 450401861735912
  8. Jennifer Ridge, M.D.Middletown, OH 450421932192515

Common questions

What is Keoni Nguyen, D.O.'s NPI number?

Keoni Nguyen, D.O.'s National Provider Identifier (NPI) is 1831388198, issued on Oct 23, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Keoni Nguyen, D.O. located?

The NPPES record lists a practice address at 4834 Socialville Foster RD, Mason, OH, 45040. Phone: (134) 591-9885. Providers update this record themselves, so call before visiting.

How can I verify Keoni Nguyen, D.O.'s license?

NPPES lists Ohio license number 34.010172, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Keoni Nguyen, D.O. prescribe under Medicare Part D?

In 2024, Keoni Nguyen, D.O. had 1,771 Medicare Part D claims for 551 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.

What is Keoni Nguyen, D.O.'s MIPS final score?

The 2023 MIPS final score is 100 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.