Proto360, LLC

Primary specialty

Obesity Medicine (Preventive Medicine) PhysicianTaxonomy code 2083B0002X

Legal business name

PROTO360, LLC

Practice address

419 4TH St
Annapolis, MD 21403-2585

Phone

(410) 823-8243

NPI assigned

Jun 29, 2026

Last updated

Jun 29, 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

Dr. Katrina Mattingly, MD

Title

Founding Partner

Phone

(352) 339-3111

Specialties & licenses 2

Addresses

Locations

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

{
    "created_epoch": "1782691200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1782691200000",
    "number": "1043136526",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "419 4TH ST",
            "city": "ANNAPOLIS",
            "state": "MD",
            "postal_code": "214032585"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "419 4TH ST",
            "city": "ANNAPOLIS",
            "state": "MD",
            "postal_code": "214032585",
            "telephone_number": "410-823-8243"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "PROTO360, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-06-29",
        "last_updated": "2026-06-29",
        "certification_date": "2026-06-24",
        "status": "A",
        "authorized_official_last_name": "MATTINGLY",
        "authorized_official_first_name": "KATRINA",
        "authorized_official_title_or_position": "FOUNDING PARTNER",
        "authorized_official_telephone_number": "352-339-3111",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "261QU0200X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Urgent Care",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "2083B0002X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Obesity Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 29, 2026; 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.