Second Investment Group, Inc

Primary specialty

DentistTaxonomy code 122300000X

License

21927 Issued in TX

Legal business name

SECOND INVESTMENT GROUP, INC

Doing business as

A1 Dentists

Practice address

14004 Tomball Parkway
Houston, TX 77086

Phone

(281) 999-6200

NPI assigned

Feb 12, 2007

Organization subpart

No

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

Authorized official

Name

John William Callaway, DDS

Title

Owner

Phone

(281) 999-6200

Specialties & licenses 3

Addresses

Other names 1

• A1 DENTISTS Doing business as

Locations

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

{
    "created_epoch": "1171238400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757548800000",
    "number": "1457493256",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "14004 TOMBALL PARKWAY",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "77086",
            "telephone_number": "281-999-6200"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "14004 TOMBALL PARKWAY",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "77086",
            "telephone_number": "281-999-6200"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "SECOND INVESTMENT GROUP, INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-02-12",
        "last_updated": "2025-09-11",
        "status": "A",
        "authorized_official_last_name": "CALLAWAY",
        "authorized_official_first_name": "JOHN",
        "authorized_official_middle_name": "WILLIAM",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "281-999-6200",
        "authorized_official_credential": "DDS"
    },
    "taxonomies": [
        {
            "code": "122300000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dentist",
            "state": "TX",
            "license": "08262",
            "primary": false
        },
        {
            "code": "122300000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dentist",
            "state": "TX",
            "license": "21927",
            "primary": true
        },
        {
            "code": "1223G0001X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dentist, General Practice",
            "state": "TX",
            "license": "08262",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "A1 DENTISTS",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

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• Dentist in Houston, TX
• Providers in Houston, TX by specialty
• Dentist in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.