Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Arlene Halstead, FNP

Psychiatric/Mental Health Nurse Practitioner in Rye Brook, NY · enumerated 2009.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821220187

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Registry record

Entity type Individual (Type 1)

Name Arlene Halstead

Credential FNP

Sex Female

Practice address 1186 King St, Rye Brook, NY, 10573

Phone (914) 424-3508

Fax (407) 349-1558

Enumeration date Aug 19, 2009

Last updated in NPPES May 22, 2026

Taxonomy & licenses

363LP2300X Primary Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4047 (CT) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4047 (CT) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 335653 (NY) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4047 (CT) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
00817930	Medicaid	CT	-
119342700	Medicaid	FL	-
03591435	Medicaid	NY	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is NPI 1821220187 active?

Yes, as of the latest NPPES snapshot, NPI 1821220187 is active (record last updated 2026-05-22).

How do I verify Arlene Halstead's NPI record?

Cross-check NPI 1821220187 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-22.