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Mark L Grosko DDS Inc

Endodontics in Newark, OH · enumerated 2007 · authorized official Mark Grosko, President.

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

National Provider Identifier

1548316094

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Registry record

Entity type Organization (Type 2)
Legal business name Mark L Grosko DDS Inc
Practice address 843 N 21st St, Suite 103, Newark, OH, 43055
Phone (740) 344-6349
Fax (740) 344-6350
Enumeration date Jan 26, 2007
Last updated in NPPES Sep 27, 2011

Taxonomy & classification

1223E0200X Endodontics Dental Providers · License OH21555 (OH) Primary

Authorized official

Name Mark Grosko
Title President
Phone (740) 344-6349

Other identifiers

Identifier Type State Issuer
440265 Other OH SUPERIOR
187028 Other OH COMPBENEFITS FACILITY #
195423983004 Other OH MEDICAL MUTUAL
9185647 Other OH DORAL PROVIDER ID
2424693 Medicaid OH -
256022 Other OH CIGNA
1400162 Other OH UNITED CONCORDIA

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 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.
What type of organization is Mark L Grosko DDS Inc?
Mark L Grosko DDS Inc is registered in NPPES as a Endodontics (its primary provider taxonomy).

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-27.