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David R Donnersberger MD Sc

Internal Medicine Physician in Winnetka, IL · enumerated 2007 · authorized official Patricia Kneifati, Practice Manager.

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

National Provider Identifier

1558553057

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Registry record

Entity type Organization (Type 2)
Legal business name David R Donnersberger MD Sc
Practice address 530 Winnetka Ave, Winnetka, IL, 60093
Phone (847) 441-6888
Fax (847) 441-6895
Enumeration date Aug 17, 2007
Last updated in NPPES Oct 20, 2025

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Patricia Kneifati
Title Practice Manager
Phone (847) 224-2380

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.

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Frequently asked questions

Who is the authorized official for David R Donnersberger MD Sc?
NPPES lists Patricia Kneifati (Practice Manager) as the authorized official for this organization.
What is the NPI number for David R Donnersberger MD Sc?
The NPI for David R Donnersberger MD Sc is 1558553057, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-20.