Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Keoni Nguyen, DO

Individual provider Dermatology Physician · NPI 1831388198

Keoni Nguyen, DO practises Dermatology in Mason, Ohio. Graduated from Kansas City University of Physicians and Surgeons in 2006, 20 years ago. Practices with Advanced Dermatology of Ohio, Inc, a 3-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
20
Trained at
Kansas City University of Physicians and Surgeons
Licensed in
OH
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

4834 Socialville Foster Rd
Mason, OH 45040-6827
Phone: (134) 591-9885
Fax: (513) 459-1845
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence 34.010172 (OH)

Record details

NPI number1831388198
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedOctober 23, 2007
Last updated in NPPESJanuary 22, 2025
Certification dateJanuary 22, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDERMATOLOGY
Also practisesMICROGRAPHIC DERMATOLOGIC SURGERY (MDS)
Medical schoolKANSAS CITY UNIVERSITY OF PHYSICIANS AND SURGEONS
Graduated 2006 (20 years in practice)
Group practice Advanced Dermatology Of Ohio, Inc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Melanoma (skin cancer) excision 76 times · 91st percentile
Skin biopsy 178 times · 83rd percentile
Removal of skin lesions 143 times · 77th percentile
Removal of skin cancer 124 times · 25th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients575
Services billed 6,574 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Travel and Lodging $1,529 2 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $445 28 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Advanced Dermatology of Ohio, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Mason