NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexander Joseph Kahnweiler, DO

Emergency Medicine Physician in Evanston, IL · enumerated 2019.

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

National Provider Identifier

1437619657

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Alexander Joseph Kahnweiler
Credential DO
Sex Male
Practice address 2650 Ridge Ave., Department of Emergency Medicine, Evanston, IL, 60201
Phone (847) 570-2114
Fax (847) 570-1223
Enumeration date Mar 22, 2019
Last updated in NPPES Feb 21, 2022

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 125.074284 (IL) Secondary
207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 036157807 (IL) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

Where does Alexander Kahnweiler practice?
The practice location on file with NPPES is in Evanston, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Alexander Kahnweiler?
The National Provider Identifier (NPI) for Alexander Kahnweiler is 1437619657, 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 2022-02-21.