NPPES file of Aug 9, 2026

Nhung Phan

Psychologist · Ontario, CA

Nhung Phan is a psychologist with a practice address in Ontario, California, and NPI 1578896429, issued on Sep 10, 2009. Check the license (California PSY28271, 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
1578896429
Name
Nhung Phan
Primary taxonomy
Psychologist 103T00000X
License number
PSY28271 CA
Self-reported in NPPES; status is on the state search
Practice location
1011 N Begonia Ave Ste 1009, Ontario, CA 91762
Phone
(800) 683-2945
Enumerated
Sep 10, 2009
Record last updated
Apr 11, 2024
Medicare enrollment
Enrolled (PECOS I20210507000588); 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 psychologist records → All 7,304 in California → Look up another NPI →

Also registered at 1011 N Begonia Ave Ste 1009

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

  1. Mylan Allen, LMFTMarriage & Family Therapist1942777354
  2. Antonia Allison, MFTIMarriage & Family Therapist1780003418
  3. Sirena Campagna, LMFTMarriage & Family Therapist1093199473
  4. Sandra FonsecaMarriage & Family Therapist1639469737
  5. Cassandra GhaznaviMental Health Counselor1225552441
  6. Ricardo ManciaMarriage & Family Therapist1518151919

Verify Nhung Phan 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 PSY28271    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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Nhung Phan among 7,304 psychologist records in California

Nhung Phan is one of 7,304 psychologist records with a practice address in California. 6% 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 2009, is newer than 42% of them.

  • NPI issued2009 · 42% of these records are older, 54% newer
  • In a Medicare fileNo · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 14% of these records are
  • Graduated2011 · median 2005 among the 1,058 with a school on file
  • Record last updated2024 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychologist providers in California

There are 7,304 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 7,304 in California → Every provider in Ontario → Psychologist nationwide →

The 8 psychologist records with the nearest ZIP codes

  1. Pardis Amirhoushmand, PH.D.Ontario, CA 917621003946179
  2. Gabriela Gomes Costardi, DOOntario, CA 917621609380930
  3. Lisa Lliteras, PSYDOntario, CA 917621275790602
  4. Melissa Matuszak, PH.D.Ontario, CA 917621396482055
  5. Jacquelyn Nguyen, PSY.D.Ontario, CA 917621124542642
  6. Makisha Lawrence, PSY.D.Ontario, CA 917611164869095
  7. Cassidy ErbstOntario, CA 917641003652520
  8. Jennifer Luu, PSY.D.Ontario, CA 917641720166903

Common questions

What is Nhung Phan's NPI number?

Nhung Phan's National Provider Identifier (NPI) is 1578896429, issued on Sep 10, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Nhung Phan located?

The NPPES record lists a practice address at 1011 N Begonia Ave Ste 1009, Ontario, CA, 91762. Phone: (800) 683-2945. Providers update this record themselves, so call before visiting.

How can I verify Nhung Phan's license?

NPPES lists California license number PSY28271, 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.