NPI Portal NPI Lookup & Verification

Mark D Esarey

Mark D Esarey is a healthcare organization registered as Optometrist in Charleston, IL, holding Type 2 (organization) NPI 1790867604 since 2006. The authorized official on file is Mark Esarey, Owner.

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NPI 1790867604
Entity type Organization (Type 2)
Legal business name Mark D Esarey
Practice address 1700 18TH STREET, Charleston, IL, 61920
Phone 2173456600
Fax 2173456622
Enumeration date 2006-10-19
Last updated in NPPES 2012-03-05

Authorized official

Name Mark Esarey
Title Owner
Phone 2173456600

Taxonomy & classification

Taxonomy code Specialty Primary License State
152W00000X Optometrist Primary

Other identifiers

Identifier Type State Issuer
1584009 Other IL BCBS PROV ID#
1790867604 Other IL HEALTH ALLIANCE
1790867604 Other IL PERSONAL CARE
DF5536 Other IL RAILROAD MEDICARE
1548267099 Medicaid IL
1790867604 Other IL AFLAC
1790867604 Other IL TRICARE
1790867604 Other IL OSF HEALTHCARE
Copy-ready billing details
Provider: Mark D Esarey
NPI: 1790867604
Taxonomy: 152W00000X (Optometrist)
Address: 1700 18TH STREET, Charleston, IL, 61920

Verify this record

Cross-check NPI 1790867604 against the authoritative CMS record: view Mark D Esarey on the official NPPES registry .

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 or validate an NPI number.

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 D Esarey?
Mark D Esarey is registered in NPPES as a Optometrist (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2012-03-05.