Individual provider Active NPI

Nina Mastrokalos, RN

  • Acute Care Nurse Practitioner
  • Fredericksburg, VA
National Provider Identifier
1043896335
Registry record updated Apr 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Acute Care Nurse PractitionerTaxonomy code 363LA2100X
License
0024197179 Issued in VA
Practice address
1001 Sam Perry Blvd
Fredericksburg, VA 22401-4453
Phone
(540) 419-9074
NPI assigned
Mar 18, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 25, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Acute Care Nurse Practitioner 363LA2100X 0024197179 VA Primary

Addresses

Primary practice location

1001 Sam Perry Blvd
Fredericksburg, VA 22401-4453

Mailing address

11416 Macpherson CT
Fredericksburg, VA 22407-2062
Phone (540) 419-9074

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
Credentials
Registered Nurse

State licenses

LicenseStateTypeSpecialty
0024197179VAMDAcute Care Nurse Practitioner

NPI Registry JSON

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

{
    "created_epoch": "1616025600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777075200000",
    "number": "1043896335",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11416 MACPHERSON CT",
            "city": "FREDERICKSBURG",
            "state": "VA",
            "postal_code": "224072062",
            "telephone_number": "540-419-9074"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1001 SAM PERRY BLVD",
            "city": "FREDERICKSBURG",
            "state": "VA",
            "postal_code": "224014453",
            "telephone_number": "540-419-9074"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASTROKALOS",
        "first_name": "NINA",
        "credential": "RN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-03-18",
        "last_updated": "2026-04-25",
        "certification_date": "2026-04-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2100X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Acute Care",
            "state": "VA",
            "license": "0024197179",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Fredericksburg, VA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 25, 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.