NPIMap

Organization Active NPI

MSMC of the Florida Keys, LLC

  • Internal Medicine Physician
  • Key West, FL
National Provider Identifier
1194455881
Registry record updated Mar 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Legal business name
MSMC OF THE FLORIDA KEYS, LLC
Doing business as
MSMC of the Florida Keys, LLC
Practice address
2505 Flagler Ave
Key West, FL 33040-3934
Phone
(305) 295-6767
Fax
(305) 602-8455
NPI assigned
Jun 15, 2022
Last updated
Mar 9, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
MOUNT SINAI MEDICAL CENTER, FLORIDAAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Mar 9, 2026

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

Authorized official

Name
Mervyn Mills
Title
Sr VP of Finance
Phone
(305) 674-2121

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207R00000X Primary

Addresses

Primary practice location

2505 Flagler Ave
Key West, FL 33040-3934

Mailing address

2505 Flagler Ave
Key West, FL 33040-3934
Phone (305) 295-6700

Other names 1

  • MSMC OF THE FLORIDA KEYS, LLC Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in FL

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20221228002134 FL Part B Supplier - Clinic/Group Practice 3375913833 Receives reassigned benefits from 10 practitioners
Practice locations: Key West, FL

Laboratory certificates & supplier records

Derived by NPIMap

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

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
10D2312603MSMC of the Florida Keys, LLC2505 Flagler Ave, Key West, FL 33040Certificate of waiverOct 15, 2026

National Provider Directory

National Provider Directory
Part of
Mount Sinai Hospital

Practitioners & affiliated clinicians

Practitioners 10

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.

NPI Registry JSON

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

{
    "created_epoch": "1655251200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1773014400000",
    "number": "1194455881",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2505 FLAGLER AVE",
            "city": "KEY WEST",
            "state": "FL",
            "postal_code": "330403934",
            "telephone_number": "305-295-6700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2505 FLAGLER AVE",
            "city": "KEY WEST",
            "state": "FL",
            "postal_code": "330403934",
            "telephone_number": "305-295-6767",
            "fax_number": "305-602-8455"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MSMC OF THE FLORIDA KEYS, LLC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "MOUNT SINAI MEDICAL CENTER, FLORIDA",
        "enumeration_date": "2022-06-15",
        "last_updated": "2026-03-09",
        "certification_date": "2026-03-09",
        "status": "A",
        "authorized_official_last_name": "MILLS",
        "authorized_official_first_name": "MERVYN",
        "authorized_official_title_or_position": "SR VP OF FINANCE",
        "authorized_official_telephone_number": "305-674-2121"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "MSMC OF THE FLORIDA KEYS, LLC",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Key West, FL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 9, 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.