LANCHINH H. NGUYEN MD
NPI 1487732921
Internal Medicine - Gastroenterology in Vacaville, CA
About Lanchinh H. Nguyen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LANCHINH H. NGUYEN MD (NPI 1487732921) is an individual gastroenterology provider in Vacaville, California, licensed in California (G80639) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Lanchinh H. Nguyen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Lanchinh Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Woodland, CA 95695
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Dignity Health Medical Foundation
- 1,191 clinicians in this Medicare group
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95688 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Lanchinh Nguyen's NPI number?
The NPI number for Lanchinh Nguyen is 1487732921. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is Lanchinh Nguyen located?
Lanchinh Nguyen practices at 1 Quality Dr, Vacaville, CA 95688. The listed phone number is (707) 453-5000.
What is Lanchinh Nguyen's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Lanchinh Nguyen enrolled in Medicare?
Yes. Lanchinh Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Lanchinh Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lanchinh Nguyen reassigns Medicare benefits to 2 organizations: Chw Medical Foundation (Woodland, CA) and Permanente Medical Group Inc (Vallejo, CA). Each 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 Lanchinh Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Lanchinh Nguyen was last updated on December 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Lanchinh H. Nguyen, MD · NPI 1487732921
Gastroenterology physician in Vacaville, California. Individual provider, active in the CMS NPPES registry since November 1, 2006.
## Identity
- **NPI:** 1487732921 (Entity type: Individual)
- **Enumerated:** November 1, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** G80639 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 QUALITY DR, Vacaville, CA 95688-9494
- **Phone:** (707) 453-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Chw Medical Foundation (NPI 1851691042, Woodland, CA); Permanente Medical Group Inc (NPI 1336222397, Vallejo, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** George Washington University School Of Medicine, class of 1993
## Record status
- **NPPES last updated:** December 13, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1487732921) · Data from the CMS NPPES public registry.