CAROLINE NGUYEN MD
NPI 1104934256
Emergency Medicine in Sacramento, CA
About Caroline Nguyen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAROLINE NGUYEN MD (NPI 1104934256) is an individual emergency medicine provider in Sacramento, California, licensed in California (A77132) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Caroline 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 Caroline Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sacramento, CA 95816
- Reassigned Medicare billing, California enrollment
- 2,323 clinicians in this Medicare group
Sacramento, CA 95816
- Reassigned Medicare billing, California enrollment
- 73 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 4
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 95816 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 10
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 Caroline Nguyen's NPI number?
The NPI number for Caroline Nguyen is 1104934256. It was assigned to this individual provider in the NPPES registry on August 28, 2006.
Where is Caroline Nguyen located?
Caroline Nguyen practices at 2801 'l' Street, Sacramento, CA 95816. The listed phone number is (916) 733-3003.
What is Caroline Nguyen's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Caroline Nguyen enrolled in Medicare?
Yes. Caroline 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 Caroline Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Caroline Nguyen reassigns Medicare benefits to 2 organizations: Cep America - California (Sacramento, CA) and Vituity-California Observation Services PC (Sacramento, 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 Caroline 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 Caroline Nguyen was last updated on July 19, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Caroline Nguyen, MD · NPI 1104934256
Emergency Medicine physician in Sacramento, California. Individual provider, active in the CMS NPPES registry since August 28, 2006.
## Identity
- **NPI:** 1104934256 (Entity type: Individual)
- **Enumerated:** August 28, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A77132 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2801 'L' STREET, Sacramento, CA 95816
- **Phone:** (916) 733-3003
## 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): Cep America - California (NPI 1306145404, Sacramento, CA); Vituity-California Observation Services PC (NPI 1447148705, Sacramento, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** July 19, 2016
- **Other identifiers:** Medicaid 00A771320 (CA); Medicare PIN 00A771320 (CA); Medicare UPIN H56026
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Source: [NPI Profile](https://npiprofile.com/npi/1104934256) · Data from the CMS NPPES public registry.