NPPES file of Aug 9, 2026

Lien T. Nguyen, NP

Nurse Practitioner · Mission Viejo, CA

Lien T. Nguyen, NP is a nurse practitioner with a practice address in Mission Viejo, California, and NPI 1508906033, issued on Feb 7, 2007. Check the license (California NP14331, 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
1508906033
Name
Lien T. Nguyen
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
NP14331 CA
Self-reported in NPPES; status is on the state search
Practice location
27799 Medical Center RD Ste 310, Mission Viejo, CA 92691
Phone
(949) 364-5090
Enumerated
Feb 7, 2007
Record last updated
Jun 24, 2022
Medicare enrollment
Enrolled (PECOS I20040708000866); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →

Also registered at 27799 Medical Center RD Ste 310

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

  1. Daniel Kim, MDGastroenterology Physician1548648868
  2. Douglas Nguyen, MDGastroenterology Physician1184880114

Verify Lien T. 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 NP14331    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

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28% fewer Medicare Part D claims than the average nurse practitioner in 2024

793 Medicare Part D claims for 412 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.

  1. Lien Nguyen793
  2. Specialty average1,109

Most prescribed

  1. Famotidine167 claims
  2. Sod Sulf-Potass Sulf-Mag Sulf141 claims
  3. Omeprazole93 claims
  4. Pantoprazole Sodium62 claims
  5. Colestipol Hcl28 claims
  6. Creon26 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: $2,054.40

56 payments; by number, the most common kind was food and beverage; the largest payer was Aimmune Therapeutics, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Lien Nguyen$2,054.40
  2. Specialty average$791.64

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. Genesis Healthcare Partners PCLa Jolla, CA
  2. Minimally Invasive Medical GroupMission Viejo, CA
  3. Providence Medical FoundationFullerton, CA

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

Lien T. Nguyen among 8,223 nurse practitioner records in California

Lien T. Nguyen, NP is one of 8,223 nurse practitioner records with a practice address in California. 65% 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 18% of them.

  • NPI issued2007 · 18% of these records are older, 73% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 42% of these records are
  • Graduated2003 · median 2017 among the 3,425 with a school on file
  • Record last updated2022 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in California

There are 8,223 nurse practitioner records in California.

All 8,223 in California → Every provider in Mission Viejo → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Mahshid Agahi, AGNPMission Viejo, CA 926911164793279
  2. Joman AlomarMission Viejo, CA 926911538020995
  3. Yi-Jywe Cheng, NURSE PRACTITIONERMission Viejo, CA 926911053706341
  4. Janny Clark, NPMission Viejo, CA 926911932816626
  5. Tatiana Hajou, FNP-BCMission Viejo, CA 926911497345771
  6. Judith McLeod, NPMission Viejo, CA 926911518034362
  7. Courtney Rotz, M.S.N., N.P.Mission Viejo, CA 926911821370602
  8. Stephanie Samia, R.N., N.P.Mission Viejo, CA 926911427415686

Common questions

What is Lien T. Nguyen, NP's NPI number?

Lien T. Nguyen, NP's National Provider Identifier (NPI) is 1508906033, issued on Feb 7, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Lien T. Nguyen, NP located?

The NPPES record lists a practice address at 27799 Medical Center RD Ste 310, Mission Viejo, CA, 92691. Phone: (949) 364-5090. Providers update this record themselves, so call before visiting.

How can I verify Lien T. Nguyen, NP's license?

NPPES lists California license number NP14331, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Lien T. Nguyen, NP prescribe under Medicare Part D?

In 2024, Lien T. Nguyen, NP had 793 Medicare Part D claims for 412 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.