NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Us Allergy & Asthma

Allergy & Immunology Physician in Frisco, TX · enumerated 2021 · authorized official Naveen Sikka, Owner.

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

National Provider Identifier

1821758525

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Us Allergy & Asthma
Practice address 11500 State Highway 121 Ste 910, Frisco, TX, 75035
Phone (469) 200-2605
Fax (469) 200-2606
Enumeration date Dec 21, 2021
Last updated in NPPES Feb 2, 2026

Taxonomy & classification

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians Primary
207RA0201X Allergy & Immunology (Internal Medicine) Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Naveen Sikka
Title Owner
Phone (469) 200-2605

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 Us Allergy & Asthma?
NPPES lists Naveen Sikka (Owner) as the authorized official for this organization.
What is the NPI number for Us Allergy & Asthma?
The NPI for Us Allergy & Asthma is 1821758525, 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 2026-02-02.