Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

County of Westchester

Q: What is the NPI number for County of Westchester?

The NPI for County of Westchester is 1578616975, a Type 2 (organization) record in the CMS NPPES registry.

Early Intervention Provider Agency in New Rochelle, NY · enumerated 2007 · authorized official Alyse Portera, Deputy Commissioner for Admin..

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

National Provider Identifier

1578616975

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name County of Westchester

Other name <Unavail>

Practice address 145 Huguenot St, 8th Floor, New Rochelle, NY, 10801

Phone (914) 813-5026

Fax (914) 813-5044

Enumeration date Jan 19, 2007

Last updated in NPPES Jul 26, 2012

Taxonomy & classification

251B00000X Case Management Agency Agencies · License EI SRVS AUTH 4-26-01 (NY) Secondary

251E00000X Home Health Agency Agencies · License 5902600 (NY) Secondary

252Y00000X Early Intervention Provider Agency Agencies Primary

Authorized official

Name Alyse Portera

Title Deputy Commissioner for Admin.

Phone (914) 813-5046

Other identifiers

Identifier	Type	State	Issuer
00321788	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for County of Westchester?

NPPES lists Alyse Portera (Deputy Commissioner for Admin.) as the authorized official for this organization.

What is the NPI number for County of Westchester?

The NPI for County of Westchester is 1578616975, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-26.