ARIZONA ALLERGY AND ASTHMA SPECIALISTS P C
NPI 1831557321
Clinic/Center in Phoenix, AZ

Q: What is Arizona Allergy And Asthma Specialists P C's specialty?

The primary specialty registered for this NPI is Clinic/Center with taxonomy code 261Q00000X.

Active since January 29, 2016

16611 S 40TH ST, SUITE 170, PHOENIX, AZ 85048(480) 705-8844(480) 705-8838 Get Directions Write a Review

NPPES record last updated: October 29, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Arizona Allergy And Asthma Specialists P C NPPES

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

ARIZONA ALLERGY AND ASTHMA SPECIALISTS P C (NPI 1831557321) is a healthcare organization registered as a clinic/center in Phoenix, Arizona and active in the NPI registry since January 2016. The organization lists Brian Wade Millhollon, Doctor/president, as its authorized official.

NPPES Registry Identity

NPI1831557321

Entity TypeOrganization

Primary Taxonomy261Q00000X

Legal Business NameARIZONA ALLERGY AND ASTHMA SPECIALISTS P C

Location Address16611 S 40TH ST, SUITE 170Phoenix, AZ 85048-0562

Mailing Address16611 S 40th St, Suite 170Phoenix, AZ 85048-0562 · (480) 705-8844 · Fax (480) 705-8838

Phone(480) 705-8844

Fax(480) 705-8838

Organization SubpartNo

Authorized OfficialBrian Wade MillhollonDoctor/president · (480) 705-8844

Enumeration DateJanuary 29, 2016

Last NPPES UpdateOctober 29, 2021

NPPES CertifiedOctober 29, 2021

✔ NPI 1831557321 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/CenterAmbulatory Health Care Facilities

Taxonomy Code261Q00000X

License✔ Licensed in AZ · 21604

Definition

A facility or distinct part of one used for the diagnosis and treatment of outpatients. Clinic/Center is irregularly defined, sometimes being limited to organizations serving specialized treatment requirements or distinct patient/client groups (e.g., radiology, poor, and public health).

16611 S 40TH ST, Phoenix, AZ 85048

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Arizona Allergy And Asthma Specialists P C is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Arizona Allergy And Asthma Specialists P C, which bills Medicare for the services this clinician delivers.

Clinician (1)

Brian Millhollon, MD

Allergy/Immunology

NPI 1841212693

16611 S 40TH STREET SUITE 170
Phoenix, AZ 85048

(480) 705-8844

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Arizona Allergy And Asthma Specialists P C's NPI number?

The NPI number for Arizona Allergy And Asthma Specialists P C is 1831557321. It was assigned to this organization in the NPPES registry on January 29, 2016.

Where is Arizona Allergy And Asthma Specialists P C located?

Arizona Allergy And Asthma Specialists P C is located at 16611 S 40th St Suite 170, Phoenix, AZ 85048. The listed phone number is (480) 705-8844.

What is Arizona Allergy And Asthma Specialists P C's specialty?

The primary specialty registered for this NPI is Clinic/Center with taxonomy code 261Q00000X.

Is Arizona Allergy And Asthma Specialists P C enrolled in Medicare?

Yes. Arizona Allergy And Asthma Specialists P C is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Arizona Allergy And Asthma Specialists P C?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Allergy/Immunology) reassigns their Medicare billing to Arizona Allergy And Asthma Specialists P C. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Arizona Allergy And Asthma Specialists P C accept?

Health plans from Ambetter Health and Ambetter from Arizona Complete Health list Arizona Allergy And Asthma Specialists P C as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Arizona Allergy And Asthma Specialists P C was last updated on October 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.