Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David G. Gross, D.O.

Ophthalmology Physician in Merrillville, IN · enumerated 2007.

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

National Provider Identifier

1346373313

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Registry record

Entity type Individual (Type 1)

Name David G. Gross

Credential D.O.

Sex Male

Practice address 303 W 89th Ave, Suite E4, Merrillville, IN, 46410

Phone (219) 769-8989

Fax (219) 756-6389

Enumeration date Mar 13, 2007

Last updated in NPPES Mar 4, 2021

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 02001570A (IN) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
100475590	Medicaid	IN	-
000000092837	Other	IN	ANTHEM

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 NPI 1346373313 active?

Yes, as of the latest NPPES snapshot, NPI 1346373313 is active (record last updated 2021-03-04).

How do I verify David Gross's NPI record?

Cross-check NPI 1346373313 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-04.