Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Eugene Koblik, APRN MSN FNP

Nurse Practitioner in Greenwich, CT · enumerated 2025.

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

National Provider Identifier

1538953633

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Eugene Koblik

Credential APRN MSN FNP

Sex Male

Practice address 5 Perryridge Rd, Greenwich, CT, 06830

Phone (203) 863-3566

Enumeration date Apr 5, 2025

Last updated in NPPES Mar 5, 2026

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 15927 (CT) Primary

163W00000X Registered Nurse Nursing Service Providers · License 179050 (CT) Secondary

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 does Eugene Koblik practice?

The practice location on file with NPPES is in Greenwich, CT. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Eugene Koblik?

The National Provider Identifier (NPI) for Eugene Koblik is 1538953633, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-05.