NPPES file of Aug 9, 2026

Khoi Phan Nguyen, DDS

Dentist · Santa Ana, CA

Khoi Phan Nguyen, DDS is a dentist with a practice address in Santa Ana, California, and NPI 1487864856, issued on May 23, 2007. Check the license (California 57821, 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
1487864856
Name
Khoi Phan Nguyen
Credential
DDS
Primary taxonomy
Dentist 122300000X
License numbers
57821 CA
0401411474 VA
Self-reported in NPPES; status is on the state search
Practice location
2708 Westminster Ave, Santa Ana, CA 92706
Phone
(714) 554-0700
Enumerated
May 23, 2007
Record last updated
Dec 3, 2009 (not updated in 17 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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Verify Khoi Phan 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 57821
    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 dentist in 2024

75 Medicare Part D claims for 30 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Khoi Nguyen75
  2. Specialty average86

Most prescribed

  1. Amoxicillin39 claims
  2. Ibuprofen25 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.

Khoi Phan Nguyen among 14,729 dentist records in California

Khoi Phan Nguyen, DDS is one of 14,729 dentist records with a practice address in California. 56% 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, 58% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2009 · 73% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

125 dentist records list a practice address in Santa Ana

They are 125 of the 8,904 NPPES records with a practice address in Santa Ana, and 14,729 dentist records in California.

The 8 dentist records with the nearest ZIP codes

  1. Nelly Fowler, DENTISTSanta Ana, CA 927061770705741
  2. Gilberto Guevara, DDSSanta Ana, CA 927061649331315
  3. Lawrence Ha, DDSSanta Ana, CA 927061104030253
  4. Cynthia Le, DDSSanta Ana, CA 927061780773028
  5. Weena Lopez, D.D.SSanta Ana, CA 927061871934125
  6. Byung Min, DDSSanta Ana, CA 927061528167517
  7. Daniel Oh, DDSSanta Ana, CA 927061962599597
  8. Henry Peng, DDSSanta Ana, CA 927061245500388

Common questions

What is Khoi Phan Nguyen, DDS's NPI number?

Khoi Phan Nguyen, DDS's National Provider Identifier (NPI) is 1487864856, issued on May 23, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Khoi Phan Nguyen, DDS located?

The NPPES record lists a practice address at 2708 Westminster Ave, Santa Ana, CA, 92706. Phone: (714) 554-0700. Providers update this record themselves, so call before visiting.

How can I verify Khoi Phan Nguyen, DDS's license?

NPPES lists California license number 57821, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Khoi Phan Nguyen, DDS prescribe under Medicare Part D?

In 2024, Khoi Phan Nguyen, DDS had 75 Medicare Part D claims for 30 beneficiaries; the average among dentist prescribers was 86. 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.