AB TRANSITION CARE SERVICES LLC
NPI 1164110060
Nurse Practitioner in Danbury, CT

Q: What is Ab Transition Care Services LLC's NPI number?

The NPI number for Ab Transition Care Services LLC is 1164110060. It was assigned to this organization in the NPPES registry on April 27, 2023.

Q: What is Ab Transition Care Services LLC's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Active since April 27, 2023

46 FEDERAL RD STE 2D, DANBURY, CT 06810(914) 439-2205(860) 799-6660 Get Directions Write a Review

NPPES record last updated: May 30, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 30, 2026, Aug 4, 2025 (2 updates tracked since 2025).

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About Ab Transition Care Services Llc NPPES

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

AB TRANSITION CARE SERVICES LLC (NPI 1164110060) is a healthcare organization registered as a nurse practitioner in Danbury, Connecticut and active in the NPI registry since April 2023. The organization lists Arlene Halstead, Owner/ceo, as its authorized official.

NPPES Registry Identity

NPI1164110060

Entity TypeOrganization

Primary Taxonomy363L00000X

Legal Business NameAB TRANSITION CARE SERVICES LLC

Location Address46 FEDERAL RD STE 2DDanbury, CT 06810-6191

Mailing Address5950 Nw Hann DrPort St Lucie, FL 34986-3848 · (914) 439-2205 · Fax (860) 799-6660

Phone(914) 439-2205

Fax(860) 799-6660

Organization SubpartNo

Authorized OfficialArlene HalsteadOwner/ceo · (914) 439-2205

Enumeration DateApril 27, 2023

Last NPPES UpdateMay 30, 20262 updates tracked since enumeration

NPPES CertifiedMay 30, 2026

✔ NPI 1164110060 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Also ListedClinic/Center · Adult Mental HealthTaxonomy 261QM0850X

Also ListedNurse Practitioner · Adult HealthTaxonomy 363LA2200X

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X

46 FEDERAL RD STE 2D, Danbury, CT 06810

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Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ab Transition Care Services Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Ab Transition Care Services LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Arlene Halstead, FNP

Nurse Practitioner

NPI 1821220187

1186 KING ST
Rye Brook, NY 10573

(914) 424-3508

✔ PECOS27 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Ab Transition Care Services LLC's NPI number?

The NPI number for Ab Transition Care Services LLC is 1164110060. It was assigned to this organization in the NPPES registry on April 27, 2023.

Where is Ab Transition Care Services LLC located?

Ab Transition Care Services LLC is located at 46 Federal Rd Ste 2D, Danbury, CT 06810. The listed phone number is (914) 439-2205.

What is Ab Transition Care Services LLC's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Ab Transition Care Services LLC enrolled in Medicare?

Yes. Ab Transition Care Services LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ab Transition Care Services LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Nurse Practitioner) reassigns their Medicare billing to Ab Transition Care Services LLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Ab Transition Care Services LLC was last updated on May 30, 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.