Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Elizabeth Halliday Sessa

Clinical Psychologist in New York, NY · enumerated 2025.

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

National Provider Identifier

1811794373

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Registry record

Entity type Individual (Type 1)

Name Dr. Elizabeth Halliday Sessa

Sex Female

Practice address 1790 Broadway Fl 7, New York, NY, 10019

Phone (212) 305-6001

Enumeration date Mar 3, 2025

Last updated in NPPES Jul 23, 2026

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 028361 (NY) Primary

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 1811794373 active?

Yes, as of the latest NPPES snapshot, NPI 1811794373 is active (record last updated 2026-07-23).

How do I verify Elizabeth Halliday Sessa's NPI record?

Cross-check NPI 1811794373 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Diana Samuel Psychiatry Physician · New York, NY NPI 1669791554 Adam Sands Psychiatry Physician · New York, NY NPI 1205457801 Fleurette Fong Psychiatric/Mental Health Nurse Practitioner · New York, NY NPI 1699448159 Evan Burdette Psychologist · New York, NY NPI 1417790874 Nathan Lowry Cognitive & Behavioral Psychologist · New York, NY NPI 1700721297

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-23.