Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary C Lack, OD

Optometrist in Barberton, OH · enumerated 2005.

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

National Provider Identifier

1801882535

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Mary C Lack

Credential OD

Sex Female

Practice address 31 Conservatory Dr, Barberton, OH, 44203

Phone (330) 745-4404

Fax (330) 753-9162

Enumeration date Sep 27, 2005

Last updated in NPPES Apr 8, 2011

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 4364 (OH) 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
341904624	Other	OH	TRICARE
0266520001	Other	OH	ADMINISTAR
54450	Other	OH	QUAL CHOICE
000000141886	Other	OH	ANTHEM
2200676	Other	OH	UNITED HEALTH CARE
410041657	Other	OH	RAILROAD MEDICARE
341904624ML	Other	OH	SUMMA
0892155	Medicaid	OH	-
5521525	Other	OH	AETNA

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1801882535 active?

Yes, as of the latest NPPES snapshot, NPI 1801882535 is active (record last updated 2011-04-08).

How do I verify Mary Lack's NPI record?

Cross-check NPI 1801882535 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-08.