Duc Nguyen, MD
Pulmonary Disease Physician · Simi Valley, CA
Duc Nguyen, MD is a pulmonary disease physician with a practice address in Simi Valley, California, and NPI 1306945365, issued on Sep 22, 2006. Check the license (California A53620, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Duc Nguyen
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- A53620 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2650 Jones Way, Simi Valley, CA 93065
- Phone
- (805) 520-1577
- Enumerated
- Sep 22, 2006
- Record last updated
- Mar 29, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (805) 520-8091
- Medicaid ID
- 00A536201 CA
- Medicare enrollment
- Enrolled (PECOS I20040825000522); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 1989
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 2650 Jones Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Duc Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A53620Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.4 times the Medicare Part D claims of the average pulmonary disease physician in 2024
10,580 Medicare Part D claims for 821 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 166 claims were for opioids.
Most prescribed
- Trelegy Ellipta500 claims
- Atorvastatin Calcium430 claims
- Amlodipine Besylate398 claims
- Prednisone302 claims
- Levothyroxine Sodium271 claims
- Pantoprazole Sodium257 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.
The MIPS final score for 2023 (Medicare payment program): 57.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $4,766.80
90 payments; by number, the most common kind was food and beverage; the largest payer was Actelion Pharmaceuticals US, Inc. The 8,806 providers of this specialty with any payment received $5,159.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Duc Nguyen among 1,443 pulmonary disease physician records in California
Duc Nguyen, MD is one of 1,443 pulmonary disease physician records with a practice address in California. 84% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 51% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1989 · median 2002 among the 1,061 with a school on file
- Record last updated2018 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Simi Valley → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Ashim Arora, M.D.Simi Valley, CA 930651639161581
- Ryan Gil, MDOxnard, CA 930361235635368
- Daniel Goba, M.D.Oxnard, CA 930361306031810
- Movses Hayrabedian, MDOxnard, CA 930361801265046
- Darren Maehara, M.D.Oxnard, CA 930361700145265
- David Mescher, M.D.Oxnard, CA 930361912908856
- Gergana Nelson, MDOxnard, CA 930361972846954
- Zachary Taich, MDOxnard, CA 930361174055180
Common questions
What is Duc Nguyen, MD's NPI number?
Duc Nguyen, MD's National Provider Identifier (NPI) is 1306945365, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Duc Nguyen, MD located?
The NPPES record lists a practice address at 2650 Jones Way, Simi Valley, CA, 93065. Phone: (805) 520-1577. Providers update this record themselves, so call before visiting.
How can I verify Duc Nguyen, MD's license?
NPPES lists California license number A53620, 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 Duc Nguyen, MD prescribe under Medicare Part D?
In 2024, Duc Nguyen, MD had 10,580 Medicare Part D claims for 821 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
What is Duc Nguyen, MD's MIPS final score?
The 2023 MIPS final score is 57.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.