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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SOUTHWEST ALLERGY INSTITUTE PLLC
NPI 1295605335
Allergy & Immunology in Phoenix, AZ

Active since November 05, 2025CLIA 03D2347791 · Waiver
1328 E MARCONI AVE, PHOENIX, AZ 85022(602) 349-0929 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Aug 6, 2026, Nov 21, 2025, Nov 5, 2025 (3 updates tracked since 2025).

About Southwest Allergy Institute Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SOUTHWEST ALLERGY INSTITUTE PLLC (NPI 1295605335) is a healthcare organization registered as an allergy & immunology in Phoenix, Arizona and active in the NPI registry since November 2025. The organization holds a CLIA Waiver certificate valid through July 23, 2028, maintains a secondary practice location in Peoria, and lists Jacob Tyler Maddux, Md, as its authorized official.

NPPES Registry Identity

NPI1295605335
Entity TypeOrganization
Primary Taxonomy207K00000X
Legal Business NameSOUTHWEST ALLERGY INSTITUTE PLLC
Location Address1328 E MARCONI AVEPhoenix, AZ 85022-3235
Mailing Address198877 W Union Hills Dr, Suite 200Peoria, AZ 85382 · (602) 349-0929
Phone(602) 349-0929
Organization SubpartNo
Authorized OfficialJacob Tyler MadduxMd · (602) 349-0929
Enumeration DateNovember 5, 2025
Last NPPES UpdateAugust 6, 20263 updates tracked since enumeration
NPPES CertifiedAugust 6, 2026
✔ NPI 1295605335 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
1328 E MARCONI AVE, Phoenix, AZ 85022
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Secondary Practice Location 1

Location 18877 W Union Hills Dr Ste 200Peoria, AZ 85382-3016 · Phone (602) 349-0929

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 03D2347791

Southwest Allergy Institute · Peoria, AZ
Active · expires Jul 23, 2028
CLIA Number03D2347791
Laboratory TypePhysician Office
Certificate Effective DateJuly 24, 2026
Certificate Expiration DateJuly 23, 2028
Laboratory DirectorJacob T. Maddux
Laboratory Phone(623) 887-9292
Laboratory LocationSouthwest Allergy Institute8877 W Union Hills Dr Ste 200, Peoria, AZ 85382
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Southwest Allergy Institute PLLC's NPI number?

The NPI number for Southwest Allergy Institute PLLC is 1295605335. It was assigned to this organization in the NPPES registry on November 5, 2025.

Where is Southwest Allergy Institute PLLC located?

Southwest Allergy Institute PLLC is located at 1328 E Marconi Ave, Phoenix, AZ 85022. The listed phone number is (602) 349-0929.

What is Southwest Allergy Institute PLLC's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Does Southwest Allergy Institute PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 03D2347791) is associated with this NPI, valid through July 23, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Southwest Allergy Institute PLLC was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 54 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.