Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Pec Chesterfield, LLC

Q: What is the NPI number for Pec Chesterfield, LLC?

The NPI for Pec Chesterfield, LLC is 1811500069, a Type 2 (organization) record in the CMS NPPES registry.

Optometrist in Ellisville, MO · enumerated 2020 · authorized official Dirk Massie, Owner.

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

National Provider Identifier

1811500069

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Registry record

Entity type Organization (Type 2)

Legal business name Pec Chesterfield, LLC

Practice address 317 Clarkson Rd Ste 102, Ellisville, MO, 63011

Phone (636) 725-2020

Enumeration date Aug 27, 2020

Last updated in NPPES Aug 27, 2020

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary

Authorized official

Name Dirk Massie

Title Owner

Phone (618) 234-3053

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

Who is the authorized official for Pec Chesterfield, LLC?

NPPES lists Dirk Massie (Owner) as the authorized official for this organization.

What is the NPI number for Pec Chesterfield, LLC?

The NPI for Pec Chesterfield, LLC is 1811500069, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-27.