Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Delmar E Spronk, O.D.

Optometrist in Sheldon, IA · enumerated 2006 · practices at Spronk Vander Griend & Radke.

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

National Provider Identifier

1619948528

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Registry record

Entity type Individual (Type 1)

Name Dr. Delmar E Spronk

Credential O.D.

Sex Male

Practice address 928 3rd Ave, Sheldon, IA, 51201

Phone (712) 324-2552

Enumeration date Jan 30, 2006

Last updated in NPPES Dec 13, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1630 (IA) 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
0280578	Medicaid	IA	-
1158659	Medicaid	IA	-
23060	Other	IA	MEDICARE DME INDIV ID-PAU
410032855	Other	IA	RR MEDICARE INDIV PAULLIN
CE1831	Other	IA	RR MEDICARE GROUP PAULLIN
I7585	Other	IA	MEDICARE GROUP PAULLINA
I7584	Other	IA	MEDICARE GROUP ID-SHELDON
33330	Other	IA	WELLMARK GROUP ID
0158659	Medicaid	IA	-
410021693	Other	IA	RR MEDICARE INDI SHELDON
0280586	Medicaid	IA	-
15865	Other	IA	MEDICARE DME INDV ID-SHEL
23060	Other	IA	MEDICARE INDIVIDUAL PAULL
33340	Other	IA	WELLMARK GROUP ID
CS7580	Other	IA	RR MEDICARE GROUP SHELDON

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.

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Frequently asked questions

What is the NPI number for Delmar Spronk?

The National Provider Identifier (NPI) for Delmar Spronk is 1619948528, a Type 1 (individual) record in the CMS NPPES registry.

Where does Delmar Spronk practice?

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

Other providers at this practice address

Browse all →

Spronk Vander Griend & Radke Optometrist · Sheldon, IA NPI 1346211257 Matthew Radke Optometrist · Sheldon, IA NPI 1306819560 Matthiew Hoogland Optometrist · Sheldon, IA NPI 1275996795

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-13.