NPPES file of Aug 9, 2026

Alexander Dung Nguyen, MD

Anesthesiology Physician · San Francisco, CA

Alexander Dung Nguyen, MD is an anesthesiology physician with a practice address in San Francisco, California, and NPI 1639751746, issued on Apr 27, 2021. Check the license (California A200299, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639751746
Name
Alexander Dung Nguyen
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
A200299 CA
Self-reported in NPPES; status is on the state search
Practice location
513 Parnassus Ave # S436, San Francisco, CA 94143
Phone
(415) 353-1297
Enumerated
Apr 27, 2021
Record last updated
Aug 29, 2025
Medicare enrollment
Enrolled (PECOS I20250912001927); accepts Medicare assignment
Medical or professional school
University Of Colorado School Of Medicine, Aurora, 2021
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 513 Parnassus Ave # S436

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

  1. Ryan Barrera, MDAnesthesiology Physician1043770191
  2. Christopher Calciano, MDStudent in an Organized Health Care Education/Training Program1336941806
  3. Joyce Chang, M.D.Anesthesiology Physician1144507120
  4. Gregory Chinn, M.D./PH.D.Student in an Organized Health Care Education/Training Program1649614595
  5. Kevin EappenStudent in an Organized Health Care Education/Training Program1174463418
  6. Lindsey Huddleston, M.D.Anesthesiology Physician1982991915

Verify Alexander Dung 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 A200299
    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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Bills Medicare through one group practice

  1. University OF California San FranciscoSan Francisco, CA

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

Alexander Dung Nguyen among 7,571 anesthesiology physician records in California

Alexander Dung Nguyen, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 95% of them.

  • NPI issued2021 · 95% of these records are older, 3% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2021 · median 2006 among the 4,868 with a school on file
  • Record last updated2025 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

499 anesthesiology physician records list a practice address in San Francisco

They are 499 of the 38,143 NPPES records with a practice address in San Francisco, and 7,571 anesthesiology physician records in California.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Philip Bickler, MDSan Francisco, CA 941431245295450
  2. Ronald Braun, M.D.San Francisco, CA 941431700865367
  3. Neal Cohen, MDSan Francisco, CA 941431790740504
  4. Helge Eilers, MDSan Francisco, CA 941431134182884
  5. Adrian Gelb, MDSan Francisco, CA 941431568427185
  6. Michael Gropper, MDSan Francisco, CA 941431699730416
  7. Jeffrey Katz, MDSan Francisco, CA 941431295790913
  8. Terry Kim, MDSan Francisco, CA 941431972578524

Common questions

What is Alexander Dung Nguyen, MD's NPI number?

Alexander Dung Nguyen, MD's National Provider Identifier (NPI) is 1639751746, issued on Apr 27, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Alexander Dung Nguyen, MD located?

The NPPES record lists a practice address at 513 Parnassus Ave # S436, San Francisco, CA, 94143. Phone: (415) 353-1297. Providers update this record themselves, so call before visiting.

How can I verify Alexander Dung Nguyen, MD's license?

NPPES lists California license number A200299, 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.

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.