NPPES file of Aug 9, 2026

Lam Duy Nguyen

Psychiatric/Mental Health Registered Nurse · Cerritos, CA

Lam Duy Nguyen is a psychiatric/mental health registered nurse with a practice address in Cerritos, California, and NPI 1558995860, issued on Feb 25, 2020. Check the license (California 820798, 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
1558995860
Name
Lam Duy Nguyen
Primary taxonomy
Psychiatric/Mental Health Registered Nurse 163WP0808X
License number
820798 CA
Self-reported in NPPES; status is on the state search
Practice location
10802 College PL, Cerritos, CA 90703
Phone
(562) 924-9581
Enumerated
Feb 25, 2020
Record last updated
Feb 25, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(562) 293-1019
Medicare enrollment
Enrolled (PECOS I20231109000661); 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 psychiatric/mental health registered nurse records → All 2,568 in California → Look up another NPI →

Also registered at 10802 College PL

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

  1. James Earvin Basco, RNRegistered Nurse1750934600
  2. Kent CampbellRegistered Nurse1376188680
  3. Jasmine Charles, ASWSocial Worker1922668664
  4. Robert Collen, M.D.Internal Medicine Physician1538267125
  5. Eden Ross DantesPsychiatric/Mental Health Registered Nurse1518518893
  6. Nicholas Fernando, RNRegistered Nurse1164075727

Verify Lam Duy 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 820798    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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13% fewer Medicare Part D claims than the average psychiatric/mental health registered nurse in 2024

776 Medicare Part D claims for 91 beneficiaries, against an average of 888 among the 242 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.

  1. Lam Nguyen776
  2. Specialty average888

Most prescribed

  1. Clonazepam82 claims
  2. Lorazepam79 claims
  3. Quetiapine Fumarate78 claims
  4. Divalproex Sodium61 claims
  5. Trazodone Hcl44 claims
  6. Risperidone41 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: $522.17

8 payments; by number, the most common kind was food and beverage; the largest payer was Acadia Pharmaceuticals Inc. The 213 providers of this specialty with any payment received $1,316.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Lam Nguyen$522.17
  2. Specialty average$1,316.81

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. Jason Kellogg MD IncFresno, CA

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

Lam Duy Nguyen among 2,568 psychiatric/mental health registered nurse records in California

Lam Duy Nguyen is one of 2,568 psychiatric/mental health registered nurse records with a practice address in California. 2% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 57% of them.

  • NPI issued2020 · 57% of these records are older, 39% newer
  • In a Medicare fileYes · 2% of these records are
  • In the CMS Doctors and Clinicians fileYes · under 1% of these records are
  • Graduated2012 · median 2023 among the 20 with a school on file
  • Record last updated2020 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163WP0808X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

18 psychiatric/mental health registered nurse records list a practice address in Cerritos

They are 18 of the 1,842 NPPES records with a practice address in Cerritos, and 2,568 psychiatric/mental health registered nurse records in California.

All 2,568 in California → Every provider in Cerritos → Psychiatric/Mental Health Registered Nurse nationwide →

The 8 psychiatric/mental health registered nurse records with the nearest ZIP codes

  1. Stephanie Coleman, R.N.Cerritos, CA 907031265869861
  2. Eden Ross DantesCerritos, CA 907031518518893
  3. Elvis FerrerCerritos, CA 907031861026858
  4. Almira Gervacio, RNCerritos, CA 907031851471189
  5. Ambika GroverCerritos, CA 907031780010496
  6. Shayna Le Flore, RNCerritos, CA 907031417598921
  7. Kelly Mitchell, RNCerritos, CA 907031902467848
  8. Jayseph Neri, RNCerritos, CA 907031437709862

Common questions

What is Lam Duy Nguyen's NPI number?

Lam Duy Nguyen's National Provider Identifier (NPI) is 1558995860, issued on Feb 25, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Lam Duy Nguyen located?

The NPPES record lists a practice address at 10802 College PL, Cerritos, CA, 90703. Phone: (562) 924-9581. Providers update this record themselves, so call before visiting.

How can I verify Lam Duy Nguyen's license?

NPPES lists California license number 820798, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Lam Duy Nguyen prescribe under Medicare Part D?

In 2024, Lam Duy Nguyen had 776 Medicare Part D claims for 91 beneficiaries; the average among psychiatric/mental health registered nurse prescribers was 888. 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.