NPPES file of Aug 9, 2026

Peter Hai Nguyen, ACSW

Mental Health Counselor · Fountain Valley, CA

Peter Hai Nguyen, ACSW is a mental health counselor with a practice address in Fountain Valley, California, and NPI 1114120235, issued on Jun 6, 2007. Check the license (California ASW71881, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1114120235
Name
Peter Hai Nguyen
Credential
ACSW
Primary taxonomy
Mental Health Counselor 101YM0800X
License number
ASW71881 CA
Self-reported in NPPES; status is on the state search
Practice location
18350 Mount Langley St Ste 220, Fountain Valley, CA 92708
Phone
(714) 378-2620
Enumerated
Jun 6, 2007
Record last updated
Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest mental health counselor records → All 28,617 in California → Look up another NPI →

Also registered at 18350 Mount Langley St Ste 220

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

  1. Azaria AlexanderStudent in an Organized Health Care Education/Training Program1831924158
  2. Jennifer ArreguinSocial Worker1548199276
  3. Skylar BallPsychologist1386521854
  4. Adriana BarberSocial Worker1801373931
  5. Jessica BelloSocial Worker1558032433
  6. Jourdan BretoiSchool Social Worker1588142269

Verify Peter Hai 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 ASW71881    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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Peter Hai Nguyen among 28,617 mental health counselor records in California

Peter Hai Nguyen, ACSW is one of 28,617 mental health counselor records with a practice address in California. 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 4% of them.

  • NPI issued2007 · 4% of these records are older, 81% newer
  • In a Medicare fileNo · 1% of these records are
  • In the CMS Doctors and Clinicians fileNo · 3% of these records are
  • Record last updated2018 · 71% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

50 mental health counselor records list a practice address in Fountain Valley

They are 50 of the 2,190 NPPES records with a practice address in Fountain Valley, and 28,617 mental health counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 28,617 in California → Every provider in Fountain Valley → Mental Health Counselor nationwide →

The 8 mental health counselor records with the nearest ZIP codes

  1. Rachel ChristensenFountain Valley, CA 927081912181033
  2. Carol Cole, LMFTFountain Valley, CA 927081316015043
  3. Sharon Garrett, MFTFountain Valley, CA 927081093804551
  4. Jill Grenda, M.A.Fountain Valley, CA 927081891875613
  5. Adrian ManriqueFountain Valley, CA 927081497825426
  6. Charlene MarquezFountain Valley, CA 927081841523222
  7. Laurie Moncrief, MFCCFountain Valley, CA 927081679608939
  8. Jacqueline Ormerod, BA, BA HONORSFountain Valley, CA 927081518141118

Common questions

What is Peter Hai Nguyen, ACSW's NPI number?

Peter Hai Nguyen, ACSW's National Provider Identifier (NPI) is 1114120235, issued on Jun 6, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Peter Hai Nguyen, ACSW located?

The NPPES record lists a practice address at 18350 Mount Langley St Ste 220, Fountain Valley, CA, 92708. Phone: (714) 378-2620. Providers update this record themselves, so call before visiting.

How can I verify Peter Hai Nguyen, ACSW's license?

NPPES lists California license number ASW71881, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.