NPPES file of Aug 9, 2026

Lien-Huong Nguyen, MD

Adult Medicine Physician · San Jose, CA

Lien-Huong Nguyen, MD is an adult medicine physician with a practice address in San Jose, California, and NPI 1841222197, issued on Jul 7, 2006. Check the license (California A66971, as entered in NPPES) on the Medical Board of California; 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
1841222197
Name
Lien-Huong Nguyen
Credential
MD
Primary taxonomy
Adult Medicine Physician 207QA0505X
License number
A66971 CA
Self-reported in NPPES; status is on the state search
Practice location
250 Hospital Pkwy, San Jose, CA 95119
Phone
(408) 972-6065
Enumerated
Jul 7, 2006
Record last updated
Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20061026000620); 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 250 Hospital Pkwy

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

  1. Kristine AmiiPhysical Therapist1356696975
  2. Franklin Amog, RNCritical Care Medicine Registered Nurse1376408914
  3. Rachel AranzasoSocial Worker1740659366
  4. Robert Atienza, MDAnatomic Pathology & Clinical Pathology Physician1609134725
  5. Elizabeth BaileyDietary Manager1346388758
  6. Heather BlakeCertified Registered Nurse Anesthetist1750771168

Verify Lien-Huong Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A66971
    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 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.

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

91% fewer Medicare Part D claims than the average adult medicine physician in 2024

276 Medicare Part D claims for 209 beneficiaries, against an average of 3,002 among the 1,307 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.

  1. Lien-Huong Nguyen276
  2. Specialty average3,002

Most prescribed

  1. Cefadroxil68 claims
  2. Mupirocin45 claims
  3. Doxycycline Monohydrate24 claims
  4. Adacel Tdap22 claims
  5. Amoxicillin-Clavulanate Potass20 claims
  6. Lidocaine15 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncRichmond, CA

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

Lien-Huong Nguyen among 386 adult medicine physician records in California

Lien-Huong Nguyen, MD is one of 386 adult medicine physician records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 65% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 48% of these records are
  • Graduated1997 · median 2005 among the 187 with a school on file
  • Record last updated2021 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0505X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Medicine Physician providers in California

There are 386 adult medicine physician records in California.

The 8 adult medicine physician records with the nearest ZIP codes

  1. Johnny PhuSan Jose, CA 951191437682531
  2. Kindchia WongSan Jose, CA 951191326741679
  3. Pacifico Santos, M.D.San Jose, CA 951161265547608
  4. Hung Trinh, M.D.,San Jose, CA 951161558336743
  5. William NhamSan Jose, CA 951311265061154
  6. Robert Letamendi, M.D.Watsonville, CA 950761356341671
  7. Sharon Gehringer, PA-CSanta Cruz, CA 950601053423608
  8. Anand Singh, M.D.Santa Clara, CA 950541982818415

Common questions

What is Lien-Huong Nguyen, MD's NPI number?

Lien-Huong Nguyen, MD's National Provider Identifier (NPI) is 1841222197, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Lien-Huong Nguyen, MD located?

The NPPES record lists a practice address at 250 Hospital Pkwy, San Jose, CA, 95119. Phone: (408) 972-6065. Providers update this record themselves, so call before visiting.

How can I verify Lien-Huong Nguyen, MD's license?

NPPES lists California license number A66971, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Lien-Huong Nguyen, MD prescribe under Medicare Part D?

In 2024, Lien-Huong Nguyen, MD had 276 Medicare Part D claims for 209 beneficiaries; the average among adult medicine physician prescribers was 3,002. 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.