NPPES file of Aug 9, 2026

Kien Anh Nguyen

Obstetrics & Gynecology Physician · Katy, TX

Kien Anh Nguyen is an obstetrics & gynecology physician with a practice address in Katy, Texas, and NPI 1043501455, issued on Apr 20, 2011. Check the license (Texas Q5514, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1043501455
Name
Kien Anh Nguyen
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
Q5514 TX
Self-reported in NPPES; status is on the state search
Practice location
21700 Kingsland Blvd, Katy, TX 77450
Phone
(281) 398-2140
Enumerated
Apr 20, 2011
Record last updated
Dec 1, 2016 (not updated in 10 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20171103001761); accepts Medicare assignment
Medical or professional school
Louisiana State University School Of Medicine In New Orleans, 2011
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 21700 Kingsland Blvd

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

  1. John Adams, M.DInternal Medicine Physician1922006410
  2. Sankaranarayan Alagugurusamy, M.D.Emergency Medicine Physician1437159696
  3. Paul Bing, M.DPulmonary Disease Physician1376541870
  4. William CurrieGastroenterology Physician1093713596
  5. Crystal Durand, FNP-CNurse Practitioner1851832794
  6. Cassie EkdahlNurse Practitioner1457719775

Verify Kien Anh Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license Q5514
    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 Texas 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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90% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

16 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Kien Anh Nguyen16
  2. Specialty average165

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.

Industry payments in 2024: $330.34

15 payments; by number, the most common kind was food and beverage; the largest payer was Sage Therapeutics, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kien Anh Nguyen$330.34
  2. Specialty average$1,030.61

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. Privia Medical Group Gulf Coast PLLCSugar Land, TX

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

Kien Anh Nguyen among 3,524 obstetrics & gynecology physician records in Texas

Kien Anh Nguyen is one of 3,524 obstetrics & gynecology physician records with a practice address in Texas. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 67% of them.

  • NPI issued2011 · 67% of these records are older, 31% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2011 · median 2005 among the 2,093 with a school on file
  • Record last updated2016 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Texas

There are 3,524 obstetrics & gynecology physician records in Texas.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Ann Bertles, MDKaty, TX 774501922263037
  2. Catherine Corovessis, M. D.Katy, TX 774501487688891
  3. Robert Friedman, MDKaty, TX 774501700073590
  4. Ashley Hester, M.D.Katy, TX 774501770826356
  5. Mohammed Kabir, DOKaty, TX 774501861494122
  6. Tania Lee, MDKaty, TX 774501841586682
  7. Ziyad Mansur, MDKaty, TX 774501164986816
  8. Kelly McCullagh, M.D.Katy, TX 774501588662886

Common questions

What is Kien Anh Nguyen's NPI number?

Kien Anh Nguyen's National Provider Identifier (NPI) is 1043501455, issued on Apr 20, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Kien Anh Nguyen located?

The NPPES record lists a practice address at 21700 Kingsland Blvd, Katy, TX, 77450. Phone: (281) 398-2140. Providers update this record themselves, so call before visiting.

How can I verify Kien Anh Nguyen's license?

NPPES lists Texas license number Q5514, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Kien Anh Nguyen prescribe under Medicare Part D?

In 2024, Kien Anh Nguyen had 16 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.

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.