NPPES file of Aug 9, 2026

Kathy Thanh Nguyen, AGACNP-BC

Acute Care Nurse Practitioner · Mission Viejo, CA

Kathy Thanh Nguyen, AGACNP-BC is an acute care nurse practitioner with a practice address in Mission Viejo, California, and NPI 1437702552, issued on Jul 17, 2019. Check the license (California 95012247, as entered in NPPES) with the California board that licenses this profession; 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
1437702552
Name
Kathy Thanh Nguyen
Credential
AGACNP-BC
Primary taxonomy
Acute Care Nurse Practitioner 363LA2100X
License number
95012247 CA
Self-reported in NPPES; status is on the state search
Practice location
26732 Crown Valley Pkwy Ste 351, Mission Viejo, CA 92691
Phone
(949) 457-7900
Enumerated
Jul 17, 2019
Record last updated
Jun 13, 2023
Medicare enrollment
Enrolled (PECOS I20230719000195); 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.
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Also registered at 26732 Crown Valley Pkwy Ste 351

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

  1. Ahmad Abou Abbass, M.DSurgical Oncology Physician1790946895
  2. Matthew BradySurgery Physician1376863621
  3. Marialejandra Diaz Ibarra, MDRetina Specialist (Ophthalmology) Physician1851031173
  4. Ashley Mergelmeyer, PA-CPhysician Assistant1902397219
  5. Katie Rogers, NPAcute Care Nurse Practitioner1649767476

Verify Kathy Thanh Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95012247
    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
Find the California 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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92% fewer Medicare Part D claims than the average acute care nurse practitioner in 2024

49 Medicare Part D claims for 24 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. 19 claims were for opioids.

  1. Kathy Nguyen49
  2. Specialty average594

Most prescribed

  1. Oxycodone Hcl17 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.

Industry payments in 2024: $15.18

1 payment: food and beverage; the largest payer was Pfizer Inc. The 10,984 providers of this specialty with any payment received $647.94 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kathy Nguyen$15.18
  2. Specialty average$647.94

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. University Surgeons OF Orange A Medical GroupOrange, CA

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

Kathy Thanh Nguyen among 1,810 acute care nurse practitioner records in California

Kathy Thanh Nguyen, AGACNP-BC is one of 1,810 acute care nurse practitioner records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 50% of them.

  • NPI issued2019 · 50% of these records are older, 44% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 55% of these records are
  • Graduated2019 · median 2018 among the 993 with a school on file
  • Record last updated2023 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Acute Care Nurse Practitioner providers in California

There are 1,810 acute care nurse practitioner records in California.

The 8 acute care nurse practitioner records with the nearest ZIP codes

  1. Jennifer Altamira, ACNPMission Viejo, CA 926911205815248
  2. Lauryn Brink, NPMission Viejo, CA 926911275937989
  3. Alison Forbes, NPMission Viejo, CA 926911659504298
  4. Brendi Gayle, AG-ACNPMission Viejo, CA 926911073209367
  5. Vanessa Kalis, NPMission Viejo, CA 926911629057237
  6. Zachary Lott, MSN, ARNP, NP-BCMission Viejo, CA 926911609374941
  7. Layla Rezaeepour, RN/NPMission Viejo, CA 926911720751662
  8. Katie Rogers, NPMission Viejo, CA 926911649767476

Common questions

What is Kathy Thanh Nguyen, AGACNP-BC's NPI number?

Kathy Thanh Nguyen, AGACNP-BC's National Provider Identifier (NPI) is 1437702552, issued on Jul 17, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Kathy Thanh Nguyen, AGACNP-BC located?

The NPPES record lists a practice address at 26732 Crown Valley Pkwy Ste 351, Mission Viejo, CA, 92691. Phone: (949) 457-7900. Providers update this record themselves, so call before visiting.

How can I verify Kathy Thanh Nguyen, AGACNP-BC's license?

NPPES lists California license number 95012247, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Kathy Thanh Nguyen, AGACNP-BC prescribe under Medicare Part D?

In 2024, Kathy Thanh Nguyen, AGACNP-BC had 49 Medicare Part D claims for 24 beneficiaries; the average among acute care nurse practitioner prescribers was 594. 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.