Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicholas A. Zwang, MD

Hospitalist Physician in Highland Park, IL · enumerated 2009 · practices at Endeavor Health Clinical Operations.

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

National Provider Identifier

1891925996

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Registry record

Entity type Individual (Type 1)

Name Nicholas A. Zwang

Credential MD

Sex Male

Practice address 777 Park Ave W, Highland Park, IL, 60035

Phone (847) 926-5840

Fax (847) 733-5108

Enumeration date Jul 23, 2009

Last updated in NPPES May 10, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036137781 (IL) Secondary

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 036137781 (IL) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 036137781 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 is the NPI number for Nicholas Zwang?

The National Provider Identifier (NPI) for Nicholas Zwang is 1891925996, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nicholas Zwang practice?

The practice location on file with NPPES is in Highland Park, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-10.