NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mark D Esarey

Optometrist in Charleston, IL · enumerated 2006 · authorized official Mark Esarey, Owner.

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

National Provider Identifier

1790867604

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Mark D Esarey
Practice address 1700 18th Street, Charleston, IL, 61920
Phone (217) 345-6600
Fax (217) 345-6622
Enumeration date Oct 19, 2006
Last updated in NPPES Mar 5, 2012

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary

Authorized official

Name Mark Esarey
Title Owner
Phone (217) 345-6600

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

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 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 2026-07-13. Provider record last updated 2012-03-05.