Mrs. Deirdre Anna Mannix

Mrs. Deirdre Anna Mannix is a Speech-Language Pathologist provider (Speech-Language Pathologist) practicing in Syosset, NY, registered in the NPPES registry with NPI 1669512240 since 2007. Practices at East Norwich Therapeutic Services, Ot, PC (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1669512240
Entity type	Individual (Type 1)
Name	Mrs. Deirdre Anna Mannix
Sex	Male
Practice address	Syosset, NY, 11791
Phone	5166771994
Enumeration date	2007-02-06
Last updated in NPPES	2007-07-08

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
235Z00000X	Speech-Language Pathologist	Primary	09119675	NY

Copy-ready billing details

Provider: Deirdre Mannix
NPI: 1669512240
Taxonomy: 235Z00000X (Speech-Language Pathologist)
Address: Syosset, NY, 11791

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1295946713	East Norwich Therapeutic Services, Ot, PC	Organization	Occupational Therapist	Syosset, NY

Verify this record

Cross-check NPI 1669512240 against the authoritative CMS record: view Mrs. Deirdre Anna Mannix on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What is the NPI number for Deirdre Mannix?

The National Provider Identifier (NPI) for Deirdre Mannix is 1669512240, a Type 1 (individual) record in the CMS NPPES registry.

Where does Deirdre Mannix practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.