DR. ETHAN T NGUYEN MD
NPI 1568475614
Internal Medicine in Vista, CA
About Dr. Ethan T Nguyen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ETHAN T NGUYEN MD (NPI 1568475614) is an individual internal medicine provider in Vista, California, licensed in California (C167516) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2001).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Dr. Ethan T 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
3Medicare enrollment records show Ethan Nguyen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tustin, CA 92780
- Reassigned Medicare billing, California enrollment
- 2,052 clinicians in this Medicare group
Redlands, CA 92373
- Reassigned Medicare billing, California enrollment
- 635 clinicians in this Medicare group
Los Alamitos, CA 90720
- Reassigned Medicare billing, California enrollment
- 228 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92083 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Ethan Nguyen's NPI number?
The NPI number for Ethan Nguyen is 1568475614. It was assigned to this individual provider in the NPPES registry on August 13, 2006.
Where is Ethan Nguyen located?
Ethan Nguyen practices at 145 Thunder Dr, Vista, CA 92083. The listed phone number is (760) 941-9002.
What is Ethan Nguyen's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ethan Nguyen enrolled in Medicare?
Yes. Ethan 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 Ethan Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ethan Nguyen reassigns Medicare benefits to 3 organizations: Healthcare Partners Affiliates Medical Group (Tustin, CA), Beaver Medical Group P C (Redlands, CA) and Centers For Family Medicine Gp (Los Alamitos, 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 Ethan 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 Ethan Nguyen was last updated on November 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.
# Dr. Ethan T Nguyen, MD · NPI 1568475614
Internal Medicine physician in Vista, California. Individual provider, active in the CMS NPPES registry since August 13, 2006.
## Identity
- **NPI:** 1568475614 (Entity type: Individual)
- **Enumerated:** August 13, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** C167516 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 145 THUNDER DR, Vista, CA 92083-6010
- **Phone:** (760) 941-9002
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Healthcare Partners Affiliates Medical Group (NPI 1891981502, Tustin, CA); Beaver Medical Group P C (NPI 1649503319, Redlands, CA); Centers For Family Medicine Gp (NPI 1467598243, Los Alamitos, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** November 24, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1568475614) · Data from the CMS NPPES public registry.