DUC NGUYEN MD CORP
NPI 1487842365
Internal Medicine - Pulmonary Disease in Simi Valley, CA
About Duc Nguyen Md Corp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DUC NGUYEN MD CORP (NPI 1487842365) is a healthcare organization registered as a pulmonary disease in Simi Valley, California and active in the NPI registry since October 2007. The organization lists Duc Nguyen, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Duc Nguyen Md Corp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by October 31, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Duc Nguyen MD Corp, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Duc Nguyen MD Corp's NPI number?
The NPI number for Duc Nguyen MD Corp is 1487842365. It was assigned to this organization in the NPPES registry on October 4, 2007.
Where is Duc Nguyen MD Corp located?
Duc Nguyen MD Corp is located at 1177 Roadrunner Way, Simi Valley, CA 93065. The listed phone number is (805) 520-1577.
What is Duc Nguyen MD Corp's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Duc Nguyen MD Corp enrolled in Medicare?
Yes. Duc Nguyen MD Corp is registered in the Medicare PECOS enrollment system.
When is Duc Nguyen MD Corp's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by October 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Duc Nguyen MD Corp?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Duc Nguyen MD Corp. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Duc Nguyen MD Corp was last updated on March 29, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Duc Nguyen Md Corp · NPI 1487842365
Pulmonary Disease organization in Simi Valley, California. Organization record, active in the CMS NPPES registry since October 4, 2007.
## Identity
- **NPI:** 1487842365 (Entity type: Organization)
- **Enumerated:** October 4, 2007
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **Organization subpart:** No
- **Authorized official:** Duc Nguyen, OWNER
## Practice location
- **Address:** 1177 ROADRUNNER WAY, Simi Valley, CA 93065-3159
- **Phone:** (805) 520-1577 · **Fax:** (805) 520-8091
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** October 31, 2026 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1 clinician (Internal Medicine) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 29, 2018
- **Other identifiers:** Medicaid 00A536201 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1487842365) · Data from the CMS NPPES public registry.