NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Sioux City Allergy & Asthma Associates, PC

Allergy & Immunology Physician in Sioux City, IA · enumerated 2007 · authorized official Sandy Haren, Office Manager.

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

National Provider Identifier

1881746105

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Sioux City Allergy & Asthma Associates, PC
Practice address 4280 Sergeant Rd, Suite 230, Sioux City, IA, 51106
Phone (712) 274-6884
Enumeration date Jan 17, 2007
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 23362 (IA) Primary

Authorized official

Name Sandy Haren
Title Office Manager
Phone (712) 274-6884

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

Who is the authorized official for Sioux City Allergy & Asthma Associates, PC?
NPPES lists Sandy Haren (Office Manager) as the authorized official for this organization.
What is the NPI number for Sioux City Allergy & Asthma Associates, PC?
The NPI for Sioux City Allergy & Asthma Associates, PC is 1881746105, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.