NPPES file of Aug 9, 2026

Andy Nguyen, D.O.

Family Medicine Physician · Santa Ana, CA

Andy Nguyen, D.O. is a family medicine physician with a practice address in Santa Ana, California, and NPI 1497166466, issued on May 13, 2014. Check the license (California 20A14232, 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
1497166466
Name
Andy Nguyen
Credential
D.O.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
20A14232 CA
Self-reported in NPPES; status is on the state search
Practice location
1900 E 4TH St, Santa Ana, CA 92705
Phone
(714) 967-4766
Enumerated
May 13, 2014
Record last updated
Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(714) 967-4548
Medicare enrollment
Enrolled (PECOS I20160516000114); 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 family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 1900 E 4TH St

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

  1. Ashvin Antony, MDStudent in an Organized Health Care Education/Training Program1922858919
  2. Donald Apodaca, O.D.Low Vision Rehabilitation Optometrist1831275916
  3. Austin ArdalanStudent in an Organized Health Care Education/Training Program1184251258
  4. Gelyan ArevaloMarriage & Family Therapist1871062638
  5. Claudia ArnoldPharmacist1366981870
  6. Neely AtamaniukStudent in an Organized Health Care Education/Training Program1275273310

Verify Andy 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 20A14232    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.

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81% fewer Medicare Part D claims than the average family medicine physician in 2024

685 Medicare Part D claims for 490 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 35 claims were for opioids.

  1. Andy Nguyen685
  2. Specialty average3,544

Most prescribed

  1. Nitrofurantoin Mono-Macro62 claims
  2. Cefadroxil59 claims
  3. Cefpodoxime Proxetil58 claims
  4. Doxycycline Monohydrate45 claims
  5. Prednisone38 claims
  6. Sulfamethoxazole-Trimethoprim30 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. Southern California Permanente Medical GroupSan Diego, CA

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

Andy Nguyen among 17,133 family medicine physician records in California

Andy Nguyen, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 71% of them.

  • NPI issued2014 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2014 · median 2005 among the 10,652 with a school on file
  • Record last updated2021 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

177 family medicine physician records list a practice address in Santa Ana

They are 177 of the 8,904 NPPES records with a practice address in Santa Ana, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Santa Ana → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Ani Atoian, MDSanta Ana, CA 927051174743504
  2. Thomas Badin, M.D.Santa Ana, CA 927051740358704
  3. Emily Cahill, D.O.Santa Ana, CA 927051346237948
  4. Judy Cheng-Chen, M.D.Santa Ana, CA 927051982786521
  5. Shahriar Davari, M.D.Santa Ana, CA 927051386862001
  6. Darrel Hopkins, D.O.Santa Ana, CA 927051033204318
  7. Daniel Jimenez, MDSanta Ana, CA 927051255466801
  8. Kent Lehman, M.D.Santa Ana, CA 927051346253812

Common questions

What is Andy Nguyen, D.O.'s NPI number?

Andy Nguyen, D.O.'s National Provider Identifier (NPI) is 1497166466, issued on May 13, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Andy Nguyen, D.O. located?

The NPPES record lists a practice address at 1900 E 4TH St, Santa Ana, CA, 92705. Phone: (714) 967-4766. Providers update this record themselves, so call before visiting.

How can I verify Andy Nguyen, D.O.'s license?

NPPES lists California license number 20A14232, 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 Andy Nguyen, D.O. prescribe under Medicare Part D?

In 2024, Andy Nguyen, D.O. had 685 Medicare Part D claims for 490 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.