NPPES file of Aug 9, 2026

Shana X. Nguyen, M.D.

Psychiatry Physician · Patton, CA

Shana X. Nguyen, M.D. is a psychiatry physician with a practice address in Patton, California, and NPI 1487812954, issued on May 30, 2008. Check the license (California A109733, 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
1487812954
Name
Shana X. Nguyen
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A109733 CA
Self-reported in NPPES; status is on the state search
Practice location
3102 E. Highland Avenue, Patton, CA 92369
Phone
(909) 425-7679
Enumerated
May 30, 2008
Record last updated
Dec 19, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(909) 425-6635
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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Also registered at 3102 E. Highland Avenue

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

  1. Tim Alder, M.D.Psychiatry Physician1619929023
  2. Luminita Andronescu, M.D.Specialist1699856864
  3. Ai Li Arias, M.D.Psychiatry Physician1134171598
  4. Maurizio Assandri, PH.D.Psychologist1790807402
  5. Jasdeep Aulakh, M.D.Geriatric Psychiatry Physician1932153616
  6. Tamseela Awan, M.D.Internal Medicine Physician1720059413

Verify Shana X. 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 A109733
    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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89% fewer Medicare Part D claims than the average psychiatry physician in 2024

111 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.

  1. Shana Nguyen111
  2. Specialty average1,000

Most prescribed

  1. Olanzapine27 claims
  2. Propranolol Hcl25 claims
  3. Lithium Carbonate23 claims
  4. Invega Sustenna12 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: $58.29

3 payments; by number, the most common kind was food and beverage; the largest payer was Abiomed. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Shana Nguyen$58.29
  2. Specialty average$4,954.93

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Shana X. Nguyen among 8,673 psychiatry physician records in California

Shana X. Nguyen, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 52% of them.

  • NPI issued2008 · 52% of these records are older, 43% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 38% of these records are
  • Record last updated2013 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

79 psychiatry physician records list a practice address in Patton

They are 79 of the 339 NPPES records with a practice address in Patton, and 8,673 psychiatry physician records in California.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Tim Alder, M.D.Patton, CA 923691619929023
  2. Ai Li Arias, M.D.Patton, CA 923691134171598
  3. Roger Cabansag, M.D.Patton, CA 923691063464352
  4. Edward Case, MDPatton, CA 923691407808785
  5. Manuel Desagun, MDPatton, CA 923691518919802
  6. Ron Foo, MDPatton, CA 923691578515813
  7. Greta Herbes, M.D.Patton, CA 923691619929171
  8. Joshua Horsley, M.D.Patton, CA 923691316999733

Common questions

What is Shana X. Nguyen, M.D.'s NPI number?

Shana X. Nguyen, M.D.'s National Provider Identifier (NPI) is 1487812954, issued on May 30, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Shana X. Nguyen, M.D. located?

The NPPES record lists a practice address at 3102 E. Highland Avenue, Patton, CA, 92369. Phone: (909) 425-7679. Providers update this record themselves, so call before visiting.

How can I verify Shana X. Nguyen, M.D.'s license?

NPPES lists California license number A109733, 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 Shana X. Nguyen, M.D. prescribe under Medicare Part D?

In 2024, Shana X. Nguyen, M.D. had 111 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.