Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Nathan Curtis Dieckow, O.D.

Optometrist in Galesburg, IL · enumerated 2009 · practices at Ava Rose Eyecare Ltd.

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

National Provider Identifier

1841423753

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Registry record

Entity type Individual (Type 1)

Name Dr. Nathan Curtis Dieckow

Credential O.D.

Sex Male

Practice address 1115 N Henderson St, Galesburg, IL, 61401

Phone (309) 343-1107

Fax (309) 343-1306

Enumeration date Aug 25, 2009

Last updated in NPPES Jul 5, 2015

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 2010018379 (MO) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 046010231 (IL) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
000014545	Other	MO	MEDICARE PTAN
1841423753	Medicaid	MO	-

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

Where does Nathan Dieckow practice?

The practice location on file with NPPES is in Galesburg, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Nathan Dieckow?

The National Provider Identifier (NPI) for Nathan Dieckow is 1841423753, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Daniel Sherwood Optometrist · Galesburg, IL NPI 1700897543 Ava Rose Eyecare Ltd Optometrist · Galesburg, IL NPI 1609258581

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-05.