Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Robert A Larson Od PC

Q: What is the NPI number for Robert A Larson Od PC?

The NPI for Robert A Larson Od PC is 1881883585, a Type 2 (organization) record in the CMS NPPES registry.

Clinic/Center in Plainfield, IL · enumerated 2007 · authorized official Robert Larson, Owner.

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

National Provider Identifier

1881883585

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Registry record

Entity type Organization (Type 2)

Legal business name Robert A Larson Od PC

Practice address 15420 S Rte 59, Plainfield, IL, 60544

Phone (815) 436-8955

Fax (815) 496-8745

Enumeration date Oct 18, 2007

Last updated in NPPES Oct 17, 2008

Taxonomy & classification

261Q00000X Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Robert Larson

Title Owner

Phone (815) 436-8955

Other identifiers

Identifier	Type	State	Issuer
0142300001	Other	IL	PTAN

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 Robert A Larson Od PC?

NPPES lists Robert Larson (Owner) as the authorized official for this organization.

What is the NPI number for Robert A Larson Od PC?

The NPI for Robert A Larson Od PC is 1881883585, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-17.