Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alyssa Kirby Horowitz, ND

Naturopath in Putnam, CT · enumerated 2020 · practices at Putnam Cardiology Associates, P.C..

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

National Provider Identifier

1639777576

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Registry record

Entity type Individual (Type 1)

Name Alyssa Kirby Horowitz

Credential ND

Sex Female

Practice address 158 Pomfret St, Putnam, CT, 06260

Phone (860) 963-2250

Fax (877) 281-7088

Enumeration date Oct 13, 2020

Last updated in NPPES Oct 13, 2020

Taxonomy & licenses

175F00000X Naturopath Other Service Providers · License 000663 (CT) Primary

Other identifiers

Identifier	Type	State	Issuer
000663	Other	CT	DEPARTMENT OF PUBLIC HEALTH

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

What is the NPI number for Alyssa Horowitz?

The National Provider Identifier (NPI) for Alyssa Horowitz is 1639777576, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alyssa Horowitz practice?

The practice location on file with NPPES is in Putnam, CT. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Alexander Mahendran Cardiovascular Disease Physician · Putnam, CT NPI 1154352516 Putnam Cardiology Associates, P.C. Cardiovascular Disease Physician · Putnam, CT NPI 1033142492 Duncan Heard Naturopath · Putnam, CT NPI 1043741937

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-13.