Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Loretta L De Koster, O.D.

Optometrist in Elmwood Park, IL · enumerated 2006 · practices at Oko Medical Eyecare.

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

National Provider Identifier

1316028723

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Registry record

Entity type Individual (Type 1)

Name Dr. Loretta L De Koster

Credential O.D.

Sex Female

Practice address 2500 N. Harlem Ave, Elmwood Park, IL, 60707

Phone (708) 456-4362

Fax (708) 456-5161

Enumeration date Oct 19, 2006

Last updated in NPPES Jul 5, 2018

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 046008683 (IL) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 046.008683 (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
01621057	Other	IL	BLUE CROSS BLUE SHIELD
6375	Other	IL	DAVIS VISION
IL4407	Other	IL	MEDICARE PTAN
1316028723	Other	IL	LORETTA DE KOSTER NPI
113869	Other	IL	EYE CARE PLAN OF AMERICA
1992982169	Other	IL	NPI #1992982169 LORETTA DE KOSTER,O.D.,LTD. DBA MELROSE EYECARE CENTER

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

Where does Loretta De Koster practice?

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

What is the NPI number for Loretta De Koster?

The National Provider Identifier (NPI) for Loretta De Koster is 1316028723, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Oko Medical Eyecare Ophthalmology Physician · Elmwood Park, IL NPI 1538899836 Luma Mallah Optometrist · Elmwood Park, IL NPI 1558195453

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-05.