Advanced Gastroenterology, Inc.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

A77140 Issued in CA

Legal business name

ADVANCED GASTROENTEROLOGY, INC.

Practice address

555 Marin St Ste 270
Thousand Oaks, CA 91360-4112

Phone

(805) 719-0244

Fax

(805) 777-1730

NPI assigned

Apr 13, 2007

Organization subpart

No

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

Authorized official

Name

Dr. Gilbert Simoni, MDNPI 1316922958

Title

Owner

Phone

(805) 719-0244

Specialties & licenses 1

Addresses

Other identifiers 1

Other names 1

• AGI Other name

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Locations

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/FAEGAD

Practitioners 2

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

• Gilbert Simoni, M.D., FACG

  • Gastroenterology Physician
  • Thousand Oaks, CA
  • NPI 1316922958

  CA, Gastroenterology

  Medicare reassignment NPD Authorized official
• Fernanda Monteon Ibarra, AGACNP-BC

  • Adult Health Nurse Practitioner
  • Agoura Hills, CA
  • NPI 1851990550

  CA, Multi-Specialty

  Medicare reassignment NPD

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

{
    "created_epoch": "1176422400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1739232000000",
    "number": "1497970875",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "555 MARIN ST STE 270",
            "city": "THOUSAND OAKS",
            "state": "CA",
            "postal_code": "913604112",
            "telephone_number": "805-719-0244",
            "fax_number": "805-777-1730"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "555 MARIN ST STE 270",
            "city": "THOUSAND OAKS",
            "state": "CA",
            "postal_code": "913604112",
            "telephone_number": "805-719-0244",
            "fax_number": "805-777-1730"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ADVANCED GASTROENTEROLOGY, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-04-13",
        "last_updated": "2025-02-11",
        "certification_date": "2025-02-11",
        "status": "A",
        "authorized_official_last_name": "SIMONI",
        "authorized_official_first_name": "GILBERT",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "805-719-0244",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A77140",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE GROUP ID",
            "identifier": "W20758",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "AGI",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

• Christiana Folashade Adderly
• Jacob David Adler
• Advanced Care Multispecialty Medical Group Apc
• Advanced Digestive Center of Southern California LLC
• Advanced Family Therapy Inc
• Advanced Hearing, Inc.
• Advanced Pain Medical Group
• Advanced Pain Medical Group, Inc
• Advanced Physical Therapy and Sports Medicine
• Advanced Quality Hospice, Inc.

• All providers in Thousand Oaks, CA
• Gastroenterology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 11, 2025; 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.