NPPES file of Aug 9, 2026

Michael Nguyen, M.D.

Psychiatry Physician · San Francisco, CA

Michael Nguyen, M.D. is a psychiatry physician with a practice address in San Francisco, California, and NPI 1104272046, issued on May 10, 2016. Check the license (California A154426, 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
1104272046
Name
Michael Nguyen
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A154426 CA
Self-reported in NPPES; status is on the state search
Practice location
2351 Clay St, San Francisco, CA 94115
Phone
(415) 600-6000
Enumerated
May 10, 2016
Record last updated
Oct 8, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20201113002093); accepts Medicare assignment
Medical or professional school
Tulane University School Of Medicine, 2016
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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Also registered at 2351 Clay St

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

  1. Elizabeth Au, M.D.Student in an Organized Health Care Education/Training Program1902148091
  2. Geoffrey Bailey-Gates, M.D.Student in an Organized Health Care Education/Training Program1306137708
  3. Christopher Brown, MDPulmonary Disease Physician1104900901
  4. Tze-Ming Chen, M.D.Pulmonary Disease Physician1215092705
  5. Ivan Cheng, MDCritical Care Medicine (Internal Medicine) Physician1639253438
  6. Lisa Chui, M.D.Student in an Organized Health Care Education/Training Program1689992927

Verify Michael 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 A154426
    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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73% fewer Medicare Part D claims than the average psychiatry physician in 2024

269 Medicare Part D claims for 48 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Michael Nguyen269
  2. Specialty average1,000

Most prescribed

  1. Lorazepam20 claims
  2. Duloxetine Hcl16 claims
  3. Mirtazapine15 claims
  4. Venlafaxine Hcl Er15 claims
  5. Aripiprazole14 claims
  6. Bupropion Xl14 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: $412.70

16 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. 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. Michael Nguyen$412.70
  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.

Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationSan Francisco, CA

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

Michael Nguyen among 8,673 psychiatry physician records in California

Michael 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 2016, is newer than 77% of them.

  • NPI issued2016 · 77% of these records are older, 21% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated2016 · median 2005 among the 3,295 with a school on file
  • Record last updated2020 · 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).

763 psychiatry physician records list a practice address in San Francisco

They are 763 of the 38,143 NPPES records with a practice address in San Francisco, and 8,673 psychiatry physician records in California.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Julia Adler, MDSan Francisco, CA 941151417992694
  2. Bruce Baker, MDSan Francisco, CA 941151346283926
  3. Stephen Brockway, MDSan Francisco, CA 941151346213394
  4. Hideki Chin, M.D.San Francisco, CA 941151922028885
  5. Frederick Huang, MDSan Francisco, CA 941151922038405
  6. Salma Khan, M.D.San Francisco, CA 941151114914918
  7. Adair Look, M.D.San Francisco, CA 941151740207521
  8. Heather Muhr, D.O.San Francisco, CA 941151336166057

Common questions

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

Michael Nguyen, M.D.'s National Provider Identifier (NPI) is 1104272046, issued on May 10, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Michael Nguyen, M.D. located?

The NPPES record lists a practice address at 2351 Clay St, San Francisco, CA, 94115. Phone: (415) 600-6000. Providers update this record themselves, so call before visiting.

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

NPPES lists California license number A154426, 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 Michael Nguyen, M.D. prescribe under Medicare Part D?

In 2024, Michael Nguyen, M.D. had 269 Medicare Part D claims for 48 beneficiaries; 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.