Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Peggy Jo Teske, N.P.

Acute Care Nurse Practitioner in Oak Lawn, IL · enumerated 2006.

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

National Provider Identifier

1801815212

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Registry record

Entity type Individual (Type 1)

Name Peggy Jo Teske

Credential N.P.

Sex Female

Practice address 4440 W 95th St, Oak Lawn, IL, 60453

Phone (708) 520-0398

Enumeration date Jul 18, 2006

Last updated in NPPES Jul 25, 2025

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209000916 (IL) Secondary

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209000916 (IL) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

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 specialty is Peggy Teske?

Peggy Teske is registered in NPPES with the primary taxonomy of Acute Care Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-25.