NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Zachary Rubin

Allergy & Immunology Physician in Elmhurst, IL · enumerated 2015 · practices at Oak Brook Allergists Sc.

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

National Provider Identifier

1750775185

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Zachary Rubin
Sex Male
Practice address 360 W Butterfield Rd Ste 140, Elmhurst, IL, 60126
Phone (630) 574-0460
Fax (630) 574-0470
Enumeration date Mar 24, 2015
Last updated in NPPES Jul 14, 2020

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 36145196 (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 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.
What specialty is Zachary Rubin?
Zachary Rubin is registered in NPPES with the primary taxonomy of Allergy & Immunology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-14.