NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Martin B. Gresak , O.D.

Corneal and Contact Management Optometrist in Moundsville, WV · enumerated 2007 · authorized official Martin Gresak, Owner.

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

National Provider Identifier

1215124169

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Martin B. Gresak , O.D.
Other name <Unavail>
Practice address 301 Jefferson Ave, Moundsville, WV, 26041
Enumeration date Sep 25, 2007
Last updated in NPPES Jan 8, 2008

Taxonomy & classification

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 748-OD (WV) Primary

Authorized official

Name Martin Gresak
Title Owner

Other identifiers

Identifier Type State Issuer
0150739000 Medicaid WV -
748 Other - HEALTH PLAN
000171370 Other WV MTN ST BC/BS

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

What type of organization is Martin B. Gresak , O.D.?
Martin B. Gresak , O.D. is registered in NPPES as a Corneal and Contact Management Optometrist (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-08.