HALI DUUS RN, OCN, AGPCNP-BC
NPI 1639868995
Nurse Practitioner - Adult Health in Stamford, CT
About Hali Duus Rn, Ocn, Agpcnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HALI DUUS RN, OCN, AGPCNP-BC (NPI 1639868995) is an individual adult health provider in Stamford, Connecticut, licensed in Connecticut (12733) and active in the NPI registry since May 2023. She is enrolled in Medicare PECOS, maintains a secondary practice location in New York, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
Hali Duus Rn, Ocn, Agpcnp-bc 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 Hali Duus reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stamford, CT 06907
- Reassigned Medicare billing, Connecticut enrollment
- 496 clinicians in this Medicare group
Stamford, CT 06902
- Reassigned Medicare billing, Connecticut enrollment
- 12 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 2
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 06902 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.
STAMFORD, CT 06902
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 Hali Duus's NPI number?
The NPI number for Hali Duus is 1639868995. It was assigned to this individual provider in the NPPES registry on May 3, 2023. The provider is also known as Hali Matricciani.
Where is Hali Duus located?
Hali Duus practices at 1 Hospital Plz, Stamford, CT 06902. The listed phone number is (203) 276-2695.
What is Hali Duus's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Hali Duus enrolled in Medicare?
Yes. Hali Duus 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 Hali Duus's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hali Duus reassigns Medicare benefits to 2 organizations: Stamford Health Medical Group Inc (Stamford, CT) and Hematology Oncology PC (Stamford, CT). 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 Hali Duus's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Hali Duus accept?
Health plans from Anthem Blue Cross and Blue Shield list Hali Duus 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 Hali Duus was last updated on June 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Hali Duus, RN, OCN, AGPCNP-BC · NPI 1639868995
Adult Health physician in Stamford, Connecticut. Individual provider, active in the CMS NPPES registry since May 3, 2023.
## Identity
- **NPI:** 1639868995 (Entity type: Individual)
- **Enumerated:** May 3, 2023
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** 12733 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 HOSPITAL PLZ, Stamford, CT 06902-3602
- **Phone:** (203) 276-2695 · **Fax:** (203) 975-7842
## 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): Stamford Health Medical Group Inc (NPI 1154633980, Stamford, CT); Hematology Oncology PC (NPI 1629195219, Stamford, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** June 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1639868995) · Data from the CMS NPPES public registry.