Duoc T. Nguyen, MD
Emergency Medicine Physician · Antioch, CA
Duoc T. Nguyen, MD is an emergency medicine physician with a practice address in Antioch, California, and NPI 1609954791, issued on Nov 2, 2006. Check the license (California A56415, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Duoc T. Nguyen
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A56415 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3400 Delta Fair Blvd, Antioch, CA 94509
- Phone
- (925) 779-5000
- Enumerated
- Nov 2, 2006
- Record last updated
- Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A564150 CA
- Medicare enrollment
- Enrolled (PECOS I20110404000083); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 3400 Delta Fair Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Duoc T. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A56415Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average emergency medicine physician in 2024
490 Medicare Part D claims for 279 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 100 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen73 claims
- Cefadroxil64 claims
- Methocarbamol63 claims
- Ibuprofen50 claims
- Tizanidine Hcl36 claims
- Prednisone26 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
- Permanente Medical Group IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Duoc T. Nguyen among 7,751 emergency medicine physician records in California
Duoc T. Nguyen, MD is one of 7,751 emergency 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1995 · median 2011 among the 4,560 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 emergency medicine physician records list a practice address in Antioch
They are 25 of the 2,184 NPPES records with a practice address in Antioch, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Antioch → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Ivan Cavaliere, MDAntioch, CA 945091174601231
- Patricio Chavez, M.DAntioch, CA 945091770502148
- Raj Dasari, MDAntioch, CA 945091053499145
- Mary Fitzsimons, M.DAntioch, CA 945091053330431
- Khanh Nguyen, M.D.Antioch, CA 945091033130711
- Russell Rodriguez, M.DAntioch, CA 945091245259647
- Thomas Schutz, MDAntioch, CA 945091942229349
- James Shieh, M.DAntioch, CA 945091639198930
Common questions
What is Duoc T. Nguyen, MD's NPI number?
Duoc T. Nguyen, MD's National Provider Identifier (NPI) is 1609954791, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Duoc T. Nguyen, MD located?
The NPPES record lists a practice address at 3400 Delta Fair Blvd, Antioch, CA, 94509. Phone: (925) 779-5000. Providers update this record themselves, so call before visiting.
How can I verify Duoc T. Nguyen, MD's license?
NPPES lists California license number A56415, 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 Duoc T. Nguyen, MD prescribe under Medicare Part D?
In 2024, Duoc T. Nguyen, MD had 490 Medicare Part D claims for 279 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.