ANN PHUONG DUY NGUYEN M.D.
NPI 1164415865
Emergency Medicine in Hackensack, NJ
About Ann Phuong Duy Nguyen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANN PHUONG DUY NGUYEN M.D. (NPI 1164415865) is an individual emergency medicine provider in Hackensack, New Jersey, licensed in New York (224313) and active in the NPI registry since August 2005. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Ann Phuong Duy Nguyen M.d. 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
4Medicare enrollment records show Ann Nguyen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10031
- Reassigned Medicare billing, New York enrollment
- 596 clinicians in this Medicare group
Berkeley Heights, NJ 07922
- Reassigned Medicare billing, New Jersey enrollment
- 1,184 clinicians in this Medicare group
Red Bank, NJ 07701
- Reassigned Medicare billing, New Jersey enrollment
- 689 clinicians in this Medicare group
Red Bank, NJ 07701
- Reassigned Medicare billing, New Jersey enrollment
- 2,844 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 9
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 07601 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.
HACKENSACK, NJ 07601
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 Ann Nguyen's NPI number?
The NPI number for Ann Nguyen is 1164415865. It was assigned to this individual provider in the NPPES registry on August 26, 2005.
Where is Ann Nguyen located?
Ann Nguyen practices at 30 Prospect Ave, Hackensack, NJ 07601. The listed phone number is (551) 996-3192.
What is Ann Nguyen's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Ann Nguyen enrolled in Medicare?
Yes. Ann 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 Ann Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Nguyen reassigns Medicare benefits to 4 organizations: City Medical Of Upper East Side, PLLC (New York, NY), Summit Medical Group PA (Berkeley Heights, NJ), Hackensack Meridian Health Medical Group - Primary Care PC (Red Bank, NJ) and Hackensack Meridian Health Medical Group - Specialty Care PC (Red Bank, NJ). 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 Ann Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ann Nguyen accept?
Health plans from Oscar Health list Ann 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 Ann Nguyen was last updated on July 24, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.