Allergy & Asthma Center-Katz, M.D., LTD.

Primary specialty

Allergy & Immunology PhysicianTaxonomy code 207K00000X

Legal business name

ALLERGY & ASTHMA CENTER-KATZ, M.D., LTD.

Practice address

2625 Box Canyon Dr
Las Vegas, NV 89128-0450

Phone

(702) 360-6100

Fax

(702) 360-8096

NPI assigned

Apr 8, 2008

Organization subpart

No

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name

Dr. Jason Bellak, MDNPI 1407951700

Title

Owner

Phone

(702) 360-6100

Specialties & licenses 2

Addresses

Other names 2

• Allergy & Asthma Center Doing business as
• Joel L Katz Doing business as

Medicare fee-for-service enrollment

Enrolled in NV

Enrollment records 1

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

Locations

Practitioners 4

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Jason Michael Bellak, MD

  • Allergy & Immunology Physician
  • Las Vegas, NV
  • NPI 1407951700
  Medicare reassignment Care Compare group NPD Authorized official
• Courtney McConnell, PA-C

  • Physician Assistant
  • Las Vegas, NV
  • NPI 1497476048
  Medicare reassignment Care Compare group
• Aaron Quiamzon, NP

  • Family Nurse Practitioner
  • Las Vegas, NV
  • NPI 1851223309
  NPD
• Alexandria Keaton, PA-C

  • Physician Assistant
  • Las Vegas, NV
  • NPI 1174488290
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1207612800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1783382400000",
    "number": "1285807537",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2625 BOX CANYON DR",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891280450",
            "telephone_number": "702-360-6100",
            "fax_number": "702-360-8096"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2625 BOX CANYON DR",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891280450",
            "telephone_number": "702-360-6100",
            "fax_number": "702-360-8096"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ALLERGY & ASTHMA CENTER-KATZ, M.D., LTD.",
        "organizational_subpart": "NO",
        "enumeration_date": "2008-04-08",
        "last_updated": "2026-07-07",
        "certification_date": "2026-07-07",
        "status": "A",
        "authorized_official_last_name": "BELLAK",
        "authorized_official_first_name": "JASON",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "702-360-6100",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207K00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Allergy & Immunology",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "261QM2500X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Medical Specialty",
            "state": "NV",
            "license": "8163",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Allergy & Asthma Center",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Joel L Katz",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• William Allen, PT
• Zanyae G Allen, M.E.D., QMHP, LCPC
• Gayle Allenback, MSOT
• David Allende
• Allens Care Services
• Allergy Care Centers LLC
• Allergy Medical Associates LLC
• Alleviate Care Hospice Inc
• Sara Alleyasin
• Patricia-Ann Alleyne-Thomas

• Allergy & Immunology Physician in Las Vegas, NV
• Providers in Las Vegas, NV by specialty
• Allergy & Immunology Physician in Nevada

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 7, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.