Adult Gastroenterology, P.L.L.C.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

30881 Issued in AZ

Legal business name

ADULT GASTROENTEROLOGY, P.L.L.C.

Practice address

5815 N Black Canyon Hwy Ste 101
Phoenix, AZ 85015-2200

Phone

(602) 973-6666

Fax

(602) 812-3395

NPI assigned

Aug 20, 2007

Last updated

Jan 22, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Nadim T. Zyadeh, M.D.NPI 1609877935

Title

President

Phone

(602) 973-6666

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in AZ

Enrollment records 1

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Nadim T Zyadeh, MD

  • Gastroenterology Physician
  • Phoenix, AZ
  • NPI 1609877935
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1187568000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1769040000000",
    "number": "1104019413",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5815 N BLACK CANYON HWY STE 101",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850152200",
            "telephone_number": "602-973-6666",
            "fax_number": "602-812-3395"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5815 N BLACK CANYON HWY STE 101",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850152200",
            "telephone_number": "602-973-6666",
            "fax_number": "602-812-3395"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ADULT GASTROENTEROLOGY, P.L.L.C.",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-08-20",
        "last_updated": "2026-01-22",
        "certification_date": "2026-01-22",
        "status": "A",
        "authorized_official_last_name": "ZYADEH",
        "authorized_official_first_name": "NADIM",
        "authorized_official_middle_name": "T.",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "602-973-6666",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "AZ",
            "license": "30881",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Gastroenterology Physician in Phoenix, AZ
• Providers in Phoenix, AZ by specialty
• Gastroenterology Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 22, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.