Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alyssa Nicole Grkinich, OD

Optometrist in Merrillville, IN · enumerated 2018.

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

National Provider Identifier

1396227575

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Registry record

Entity type Individual (Type 1)

Name Alyssa Nicole Grkinich

Credential OD

Sex Female

Practice address 70 E 68th Pl, Merrillville, IN, 46410

Phone (219) 736-2020

Fax (219) 769-3884

Enumeration date Sep 4, 2018

Last updated in NPPES Oct 2, 2018

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 18004116A (IN) 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
300018334	Medicaid	IN	-

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Alyssa Grkinich?

Alyssa Grkinich is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-02.