NPIMap

Individual provider Active NPI

Xavier Emilio Acosta Diaz-Hernandez, MD

  • Cardiovascular Disease Physician
  • St Johns, FL
National Provider Identifier
1073018586
Registry record updated Jul 31, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
ME173656 Issued in FL
Practice address
300 Saint Elizabeth Way Ste 110
St Johns, FL 32259
Phone
(046) 919-1009
NPI assigned
Mar 27, 2018
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 31, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Cardiovascular Disease Physician 207RC0000X ME173656 FL Primary

Addresses

Primary practice location

300 Saint Elizabeth Way Ste 110
St Johns, FL 32259

Mailing address

300 Saint Elizabeth Way Ste 110
St Johns, FL 32259-1153
Phone (904) 691-9100

Other practice location 1

1611 NW 12th Ave
Miami, FL 33136-1005
Phone (305) 585-1280

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in FL
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250804003194 FL Practitioner - Cardiovascular Disease (Cardiology) 2264866276 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)
Education
Other, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
St Vincent'S Ambulatory Care IncGroup PAC ID 2860411188, 303 clinicians

Practice addresses (Care Compare)

1801 Barrs St
Suite 120
Jacksonville, FL 32204-4738
Phone (904) 308-2006

300 Saint Elizabeth Way
Saint Johns, FL 32259-1153

4205 Belfort Rd
Suite 2065
Jacksonville, FL 32216-1473
Phone (904) 296-2631

Hospital & facility affiliations

  • Ascension St Vincent'S St Johns County Hospital, St. Johns, FL, CCN 100361
  • Ascension St Vincent'S Southside Hospital, Jacksonville, FL, CCN 100307
  • Flagler Hospital Hospital, Saint Augustine, FL, CCN 100090
  • Baptist Health Medical Center - Jacksonville Hospital, Jacksonville, FL, CCN 100088
  • Ascension St Vincent'S Riverside Hospital, Jacksonville, FL, CCN 100040

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
ME173656FLMDCardiovascular Disease Physician

Practice roles

OrganizationSpecialtyStatusNew patients
St Vincents Ambulatory Care Inc Cardiovascular Disease CurrentSince Aug 1, 2025 Accepting new patients
St Vincents Ambulatory Care Inc CurrentSince Aug 1, 2025 Accepting new patients

Locations

300 Saint Elizabeth Way
Ste 110
St Johns, FL 32259
Phone (904) 691-9100

Interoperability endpoints

  • Direct secure messaging: xavier.diaz-hernandez.1@8967.direct.athenahealth.com

Organizations & group practices 2

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 7

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1522108800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753920000000",
    "number": "1073018586",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 SAINT ELIZABETH WAY STE 110",
            "city": "ST JOHNS",
            "state": "FL",
            "postal_code": "322591153",
            "telephone_number": "904-691-9100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 SAINT ELIZABETH WAY STE 110",
            "city": "ST JOHNS",
            "state": "FL",
            "postal_code": "32259",
            "telephone_number": "046-919-1009"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1611 NW 12th Ave",
            "address_purpose": "LOCATION",
            "city": "Miami",
            "state": "FL",
            "postal_code": "331361005",
            "country_code": "US",
            "telephone_number": "305-585-1280",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DIAZ-HERNANDEZ",
        "first_name": "XAVIER",
        "middle_name": "EMILIO ACOSTA",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-03-27",
        "last_updated": "2025-07-31",
        "certification_date": "2025-07-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "FL",
            "license": "ME173656",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in St Johns, FL

Sources for this page

Verify at the official NPI Registry.