Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Jeffrey Paul Wiencek, FNP

Family Nurse Practitioner in Michigan City, IN · enumerated 2005.

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

National Provider Identifier

1174508840

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Registry record

Entity type Individual (Type 1)

Name Mr. Jeffrey Paul Wiencek

Credential FNP

Sex Male

Practice address 3723 Franklin St, Michigan City, IN, 46360

Phone (219) 874-3313

Fax (219) 878-2330

Enumeration date Dec 14, 2005

Last updated in NPPES Sep 28, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71000502A (IN) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
71000502A	Other	IN	LICENSE IN

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 the NPI number for Jeffrey Wiencek?

The National Provider Identifier (NPI) for Jeffrey Wiencek is 1174508840, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jeffrey Wiencek practice?

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

Other providers at this practice address

Browse all →

Jagjeevan Gandra Pediatrics Physician · Michigan City, IN NPI 1205821014 Vidya Kora Internal Medicine Physician · Michigan City, IN NPI 1023075777 Malathi Seshadri Obstetrics & Gynecology Physician · Michigan City, IN NPI 1013974377 Franklin Clinic P.C Multi-Specialty Clinic/Center · Michigan City, IN NPI 1407941115 Hitendrakumar Patel Internal Medicine Physician · Michigan City, IN NPI 1407946486 Dobben Medical Corp Diagnostic Radiology Physician · Michigan City, IN NPI 1164830196

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-28.