NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Nassau Anesthesia Associates, P.C.

Certified Registered Nurse Anesthetist in Mineola, NY · enumerated 2018 · authorized official Walter Weiss, President.

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

National Provider Identifier

1356823132

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Nassau Anesthesia Associates, P.C.
Practice address 216 1st St, Mineola, NY, 11501
Enumeration date Aug 29, 2018
Last updated in NPPES Aug 29, 2018

Taxonomy & classification

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers Primary

Authorized official

Name Walter Weiss
Title President

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 Nassau Anesthesia Associates, P.C.?
The NPI for Nassau Anesthesia Associates, P.C. is 1356823132, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Nassau Anesthesia Associates, P.C.?
NPPES lists Walter Weiss (President) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-29.