NPPES file of Aug 9, 2026

Quy Thi Nguyen, DO

Internal Medicine Physician · Louisville, KY

Quy Thi Nguyen, DO is an internal medicine physician with a practice address in Louisville, Kentucky, and NPI 1871885194, issued on May 4, 2011. Check the license (Kentucky 04195, as entered in NPPES) on the Kentucky Board of Medical Licensure; 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
1871885194
Name
Quy Thi Nguyen
Credential
DO
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
04195 KY
0102203348 VA
OP60984385 WA
Self-reported in NPPES; status is on the state search
Practice location
1850 Bluegrass Ave, Louisville, KY 40215
Phone
(502) 367-3360
Enumerated
May 4, 2011
Record last updated
Jun 2, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(502) 367-3365
Medicare enrollment
Enrolled (PECOS I20241019000312); accepts Medicare assignment
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.
Download card Updates feed

Also registered at 1850 Bluegrass Ave

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

  1. Nisha Aggarwal, M.DInternal Medicine Physician1730590423
  2. Scott Babin, M.D.Diagnostic Radiology Physician1033147491
  3. Jessica BairdPsychiatric/Mental Health Nurse Practitioner1457681330
  4. Margie Baker, ARNPNurse Practitioner1861506040
  5. Nevin Baker, CRNACertified Registered Nurse Anesthetist1669418497
  6. Ajmal Bangash, MDNeurology Physician1669409702

Verify Quy Thi Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersKentucky Board of Medical Licensure
    Search for license 04195
    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 Kentucky 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

86% fewer Medicare Part D claims than the average internal medicine physician in 2024

430 Medicare Part D claims for 147 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 25 claims were for opioids.

  1. Quy Nguyen430
  2. Specialty average3,176

Most prescribed

  1. Eliquis23 claims
  2. Levothyroxine Sodium18 claims
  3. Pantoprazole Sodium17 claims
  4. Tamsulosin Hcl17 claims
  5. Atorvastatin Calcium15 claims
  6. Cephalexin13 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): 100 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 score96.4
  2. Costout of 100 · 30%100.0
  3. Promoting interoperabilityout of 100 · 25%100.0
  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: $66.00

3 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Quy Nguyen$66.00
  2. Specialty average$1,303.06

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

Bills Medicare through 3 group practices

  1. Hospital Physician Services - Southeast Professional CorporationSnellville, GA
  2. Providence Health And Services OregonPortland, OR
  3. University OF Louisville Physicians IncLouisville, KY

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

457 internal medicine physician records list a practice address in Louisville

They are 457 of the 21,891 NPPES records with a practice address in Louisville, and 1,526 internal medicine physician records in Kentucky.

Other internal medicine physician records in Kentucky

  1. June AbadillaJackson, KY1811975683
  2. Bilal Abaid, M.D.Louisville, KY1144960444
  3. Joseph Abayev, MDLouisville, KY1437503752
  4. Syed Abbas, MDLouisville, KY1285081398
  5. Saba Abdulsada, MDLexington, KY1750906418
  6. Melecio Abordo, M.D.Jackson, KY1871590935
  7. Michelle Aboud, MDLouisville, KY1891709515
  8. Andrew Abraham, MDLexington, KY1306424627
  9. Wilmer Abshier, M.D.Owensboro, KY1225020621
  10. Kamana Acharya, M.DElizabethtown, KY1124647359

Common questions

What is Quy Thi Nguyen, DO's NPI number?

Quy Thi Nguyen, DO's National Provider Identifier (NPI) is 1871885194, issued on May 4, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Quy Thi Nguyen, DO located?

The NPPES record lists a practice address at 1850 Bluegrass Ave, Louisville, KY, 40215. Phone: (502) 367-3360. Providers update this record themselves, so call before visiting.

How can I verify Quy Thi Nguyen, DO's license?

NPPES lists Kentucky license number 04195, as entered by the provider. Search the Kentucky Board of Medical Licensure at https://web1.ky.gov/GenSearch/LicenseSearch.aspx?AGY=5. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Quy Thi Nguyen, DO prescribe under Medicare Part D?

In 2024, Quy Thi Nguyen, DO had 430 Medicare Part D claims for 147 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Quy Thi Nguyen, DO's MIPS final score?

The 2023 MIPS final score is 100 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.