ALLERGY & ASTHMA CENTER-KATZ, M.D., LTD.
NPI 1285807537
Allergy & Immunology in Las Vegas, NV

Q: What is Allergy & Asthma Center-Katz, M.D., Ltd.'s specialty?

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

Active since April 08, 2008CLIA 29D2030390 · Waiver

2625 BOX CANYON DR, LAS VEGAS, NV 89128(702) 360-6100(702) 360-8096 Get Directions Write a Review

NPPES record last updated: July 7, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 7, 2026, Sep 2, 2025, Apr 8, 2024 and 1 more (4 updates tracked since 2023).

On this page

About Allergy & Asthma Center-katz, M.d., Ltd. NPPES

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

ALLERGY & ASTHMA CENTER-KATZ, M.D., LTD. (NPI 1285807537), doing business as Allergy & Asthma Center, is a healthcare organization registered as an allergy & immunology in Las Vegas, Nevada and active in the NPI registry since April 2008. The organization holds a CLIA Waiver certificate valid through June 22, 2027 and lists Jason Bellak, Owner, as its authorized official.

NPPES Registry Identity

NPI1285807537

Entity TypeOrganization

Primary Taxonomy207K00000X

Legal Business NameALLERGY & ASTHMA CENTER-KATZ, M.D., LTD.

Location Address2625 BOX CANYON DRLas Vegas, NV 89128-0450

Mailing Address2625 Box Canyon DrLas Vegas, NV 89128-0450 · (702) 360-6100 · Fax (702) 360-8096

Phone(702) 360-6100

Fax(702) 360-8096

Organization SubpartNo

Authorized OfficialJason BellakOwner · (702) 360-6100

Enumeration DateApril 8, 2008

Last NPPES UpdateJuly 7, 20264 updates tracked since enumeration

NPPES CertifiedJuly 7, 2026

✔ NPI 1285807537 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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.

Also ListedClinic/Center · Medical SpecialtyTaxonomy 261QM2500X · License 8163 (NV)

2625 BOX CANYON DR, Las Vegas, NV 89128

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Other Names 2

Doing Business AsAllergy & Asthma Center

Doing Business AsJoel L Katz

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

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

Allergy & Asthma Center-katz, M.d., Ltd. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Allergy & Asthma Center-Katz, M.D., Ltd., which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Jason Bellak, MD

Allergy/Immunology

NPI 1407951700

2625 BOX CANYON DR
Las Vegas, NV 89128

(702) 360-6100

✔ PECOS✔ Accepts MedicareSame address

Aaron Quiamzon, NP

Nurse Practitioner

NPI 1851223309

2625 BOX CANYON DR
Las Vegas, NV 89128

(702) 360-6100

✔ PECOSSame address

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

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 29D2030390

Allergy & Asthma Center · Las Vegas, NV

Active · expires Jun 22, 2027

CLIA Number29D2030390

Laboratory TypePhysician Office

Certificate Effective DateJune 23, 2025

Certificate Expiration DateJune 22, 2027

Laboratory DirectorJason Bellak

Laboratory Phone(702) 360-6100

Laboratory LocationAllergy & Asthma Center2625 Box Canyon Dr, Las Vegas, NV 89128

CLIA data matches this NPI record on: Address Name Phone

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 Allergy & Asthma Center-Katz, M.D., Ltd.'s NPI number?

The NPI number for Allergy & Asthma Center-Katz, M.D., Ltd. is 1285807537. It was assigned to this organization in the NPPES registry on April 8, 2008. The provider is doing business as Allergy & Asthma Center and Joel L Katz.

Where is Allergy & Asthma Center-Katz, M.D., Ltd. located?

Allergy & Asthma Center-Katz, M.D., Ltd. is located at 2625 Box Canyon Dr, Las Vegas, NV 89128. The listed phone number is (702) 360-6100.

What is Allergy & Asthma Center-Katz, M.D., Ltd.'s specialty?

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

Is Allergy & Asthma Center-Katz, M.D., Ltd. enrolled in Medicare?

Yes. Allergy & Asthma Center-Katz, M.D., Ltd. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Allergy & Asthma Center-Katz, M.D., Ltd.?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Allergy & Asthma Center-Katz, M.D., Ltd., in Allergy/Immunology and Nurse Practitioner. 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. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Allergy & Asthma Center-Katz, M.D., Ltd. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 29D2030390) is associated with this NPI, valid through June 22, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Allergy & Asthma Center-Katz, M.D., Ltd. accept?

Health plans from Ambetter from Arizona Complete Health list Allergy & Asthma Center-Katz, M.D., Ltd. 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 Allergy & Asthma Center-Katz, M.D., Ltd. was last updated on July 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.