Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Gregory Popowitz, OD

Optometrist in Lansing, MI · enumerated 2008 · practices at Bennett Optometry LLC.

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

National Provider Identifier

1336325414

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Registry record

Entity type Individual (Type 1)

Name Gregory Popowitz

Credential OD

Sex Male

Practice address Lansing, MI, 48917

Phone (517) 886-0222

Enumeration date Jan 18, 2008

Last updated in NPPES Feb 16, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 4901003607 (MI) 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
200000002542	Medicaid	MI	-
253368	Medicaid	MI	-
200000002541	Medicaid	MI	-
0C36852	Other	MI	BCBS OF MI
203456	Medicaid	MI	-

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 Gregory Popowitz?

The National Provider Identifier (NPI) for Gregory Popowitz is 1336325414, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gregory Popowitz practice?

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

Other providers at this practice address

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Bennett Optometry LLC Optometrist · Lansing, MI NPI 1609449123

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-16.