NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Drs Sandra M Krokos & Thomas P Kislan PC

Optometrist in Nanticoke, PA · enumerated 2023 · authorized official Leslie Williams, Practice Administrator.

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

National Provider Identifier

1053010926

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Drs Sandra M Krokos & Thomas P Kislan PC
Practice address 245 S Prospect St, Nanticoke, PA, 18634
Phone (570) 735-6000
Enumeration date Feb 28, 2023
Last updated in NPPES Aug 25, 2023

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary

Authorized official

Name Leslie Williams
Title Practice Administrator
Phone (570) 421-3342

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

Where is Drs Sandra M Krokos & Thomas P Kislan PC located?
The practice location on file with NPPES is in Nanticoke, PA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-08-25. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-25.