Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Abbey Zacharski

Obstetrics & Gynecology Physician in Hoffman Estates, IL · enumerated 2023.

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

National Provider Identifier

1639871163

Verified

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Registry record

Entity type Individual (Type 1)

Name Abbey Zacharski

Sex Female

Practice address Hoffman Estates, IL, 60169

Phone (224) 299-6939

Enumeration date Mar 20, 2023

Last updated in NPPES Aug 21, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207VX0000X Obstetrics Physician Allopathic & Osteopathic Physicians · License 125.081358 (IL) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 125.081358 (IL) Primary

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

Is NPI 1639871163 active?

Yes, as of the latest NPPES snapshot, NPI 1639871163 is active (record last updated 2024-08-21).

How do I verify Abbey Zacharski's NPI record?

Cross-check NPI 1639871163 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-21.