Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Susan S Seidler, NP

Family Nurse Practitioner in Westerly, RI · enumerated 2006.

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

National Provider Identifier

1366544421

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Susan S Seidler

Credential NP

Sex Female

Practice address Westerly, RI, 02891

Phone (401) 348-7010

Fax (401) 348-7020

Enumeration date Sep 1, 2006

Last updated in NPPES Jun 12, 2019

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

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NPP22390 (RI) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APRN01116 (RI) Primary

NP — Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

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

Is NPI 1366544421 active?

Yes — as of the latest NPPES snapshot, NPI 1366544421 is active (record last updated 2019-06-12).

How do I verify Susan Seidler's NPI record?

Cross-check NPI 1366544421 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

Browse all →

Pamela Connors Gastroenterology Physician · Westerly, RI NPI 1952356875

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-12.