Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rachel Louise Closser, FNP-C

Family Nurse Practitioner in Lake St Louis, MO · enumerated 2021.

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

National Provider Identifier

1205411535

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Registry record

Entity type Individual (Type 1)

Name Rachel Louise Closser

Credential FNP-C

Sex Female

Practice address 13203 Big River Dr, Lake St Louis, MO, 63367

Phone (573) 639-9219

Enumeration date Mar 17, 2021

Last updated in NPPES Aug 16, 2021

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 2012016633 (MO) Secondary

163W00000X Registered Nurse Nursing Service Providers · License 041403271 (IL) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2021009748 (MO) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1205411535 active?

Yes, as of the latest NPPES snapshot, NPI 1205411535 is active (record last updated 2021-08-16).

How do I verify Rachel Closser's NPI record?

Cross-check NPI 1205411535 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-16.