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MS. DIEP THI NGUYEN RNFA
NPI 1255622601
Nurse Practitioner - Gerontology in Morristown, NJ

Active since April 20, 2011PECOS Enrolled
100 MADISON AVE, MORRISTOWN, NJ 07960(973) 971-5000 Get Directions Write a Review

NPPES record last updated: April 23, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ms. Diep Thi Nguyen Rnfa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. DIEP THI NGUYEN RNFA (NPI 1255622601) is an individual gerontology provider in Morristown, New Jersey, licensed in New Jersey (26NJ00698700) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1255622601
Entity TypeIndividualFemale
Primary Taxonomy363LG0600X
Provider Legal NameMS. DIEP THI NGUYENCredential: RNFA
Location Address100 MADISON AVEMorristown, NJ 07960-6136
Mailing Address297 Perry StDover, NJ 07801-2021 · (973) 975-8898
Phone(973) 971-5000
Sole ProprietorYes
Enumeration DateApril 20, 2011
Last NPPES UpdateApril 23, 2025
NPPES CertifiedApril 23, 2025
✔ NPI 1255622601 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse Practitioner · GerontologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LG0600X
License✔ Licensed in NJ · 26NJ00698700
Also ListedRegistered Nurse · Registered Nurse First AssistantTaxonomy 163WR0006X · License 163WR0006X (NJ)
Also ListedNurse Practitioner · Adult HealthTaxonomy 363LA2200X · License 26NJ00698700 (NJ)
100 MADISON AVE, Morristown, NJ 07960
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Diep Thi Nguyen Rnfa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Diep Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Barnabas Health Medical Group PC
16 mi
Specialist
225 WILLIAMSON ST
Elizabeth, NJ 07202
  • Reassigned Medicare billing, New Jersey enrollment
  • 1,894 clinicians in this Medicare group
NPI 1841557246 (888) 724-7123

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 07960 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$98.09 typical visit price
range $63.84 – $190.92
Typical copayment $24.52 (range $15.96 – $47.73)
Most-billed visit code 99203
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MELISSA LOPES M.D
Anesthesiology
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (201) 943-5831
MORRISTOWN MEMORIAL HOSPITAL
General Acute Care Hospital
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (888) 250-9947
VINCENT MAIXNER LCSW
Social Worker (Clinical)
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5000
MEGAN LYNN CATHEY NP-C
Nurse Practitioner (Adult Health)
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5358
ANTHONY RIZZUTI
Nurse Anesthetist, Certified Registered
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (800) 991-9133
OMAR MOHAMMED ABDELFATTAH MBBCH
Student in an Organized Health Care Education/Training Program
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5000
ALEXANDER CASCAIS MD
Student in an Organized Health Care Education/Training Program
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5000
DEVEA RANI DE MD
Student in an Organized Health Care Education/Training Program
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5000

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 Diep Nguyen's NPI number?

The NPI number for Diep Nguyen is 1255622601. It was assigned to this individual provider in the NPPES registry on April 20, 2011.

Where is Diep Nguyen located?

Diep Nguyen practices at 100 Madison Ave, Morristown, NJ 07960. The listed phone number is (973) 971-5000.

What is Diep Nguyen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.

Is Diep Nguyen enrolled in Medicare?

Yes. Diep Nguyen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Diep Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diep Nguyen reassigns Medicare benefits to Barnabas Health Medical Group PC (Elizabeth, NJ). 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 Diep Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diep Nguyen accept?

Health plans from Oscar Health list Diep 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 Diep Nguyen was last updated on April 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.