MARILYN ANN NGUYEN DO
NPI 1457704371
Family Medicine in Westminster, CO
About Marilyn Ann Nguyen Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARILYN ANN NGUYEN DO (NPI 1457704371) is an individual family medicine provider in Westminster, Colorado, licensed in Colorado (DR0062234) and active in the NPI registry since July 2016. She is enrolled in Medicare PECOS, maintains a secondary practice location in Northglenn, and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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
Marilyn Ann Nguyen Do 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 Reassignment
Medicare enrollment records show Marilyn Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Westminster, CO 80023
- Reassigned Medicare billing, Colorado enrollment
- 1,193 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 3
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 80023 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
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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WESTMINSTER, CO 80023
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 Marilyn Nguyen's NPI number?
The NPI number for Marilyn Nguyen is 1457704371. It was assigned to this individual provider in the NPPES registry on July 15, 2016.
Where is Marilyn Nguyen located?
Marilyn Nguyen practices at 14300 Orchard Pkwy Fl 2, Westminster, CO 80023. The listed phone number is (720) 627-4921.
What is Marilyn Nguyen's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Marilyn Nguyen enrolled in Medicare?
Yes. Marilyn 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 organization bills Medicare for Marilyn Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marilyn Nguyen reassigns Medicare benefits to Catholic Health Initiatives Colorado (Westminster, CO). The 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 Marilyn Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marilyn Nguyen accept?
Health plans from UnitedHealthcare list Marilyn Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Marilyn Nguyen was last updated on December 23, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.
# Marilyn Ann Nguyen, DO · NPI 1457704371
Family Medicine physician in Westminster, Colorado. Individual provider, active in the CMS NPPES registry since July 15, 2016.
## Identity
- **NPI:** 1457704371 (Entity type: Individual)
- **Enumerated:** July 15, 2016
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** DR0062234 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 14300 ORCHARD PKWY FL 2, Westminster, CO 80023-9206
- **Phone:** (720) 627-4921
## 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:** Catholic Health Initiatives Colorado (NPI 1053291849, Westminster, CO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** December 23, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1457704371) · Data from the CMS NPPES public registry.