NPIMap

Organization Active NPI

Johns Hopkins University

Doing business as Jhu - Cardiology

  • Cardiovascular Disease Physician
  • Baltimore, MD
National Provider Identifier
1801891080
Registry record updated Jul 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
Legal business name
JOHNS HOPKINS UNIVERSITY
Doing business as
Jhu - Cardiology
Practice address
600 N Wolfe St
Baltimore, MD 21287-0005
Phone
(410) 933-4397
NPI assigned
Jun 15, 2005
Last updated
Jul 9, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jul 9, 2026

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

Authorized official

Name
Nicholas Giarratano
Title
Director Provider Enrollment
Phone
(410) 933-0000

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Cardiovascular Disease Physician 207RC0000X MD Primary
Clinical Cardiac Electrophysiology Physician 207RC0001X MD
Interventional Cardiology Physician 207RI0011X MD

Addresses

Primary practice location

600 N Wolfe St
Baltimore, MD 21287-0005

Mailing address

6201 Greenleigh Ave
Middle River, MD 21220-2004
Phone (410) 933-6423

Other identifiers 3

IdentifierTypeStateIssuer
099240700MedicaidDC
767051600MedicaidMD
CL0061OtherMDRRMC

Other names 1

  • JHU - CARDIOLOGY Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD, DC2 enrollments

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
O20031215000719 MD Part B Supplier - Clinic/Group Practice 8921903147 Receives reassigned benefits from 4,764 practitioners
This NPI is an additional NPI on the enrollment
O20160303000443 DC Part B Supplier - Hospital Department(S) 4981745098 Receives reassigned benefits from 39 practitioners
Practice locations: Rockville, MD; Washington, DC; Germantown, MD; Bethesda, MD; Chevy Chase, MD

National Provider Directory

National Provider Directory
Part of
John Hopkins Univ

Locations

97 Thomas Johnson Dr
Frederick, MD 21702
Phone (301) 662-0011

Practitioners & affiliated clinicians

Practitioners 195

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.

View all 195

NPI Registry JSON

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

{
    "created_epoch": "1118793600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1783555200000",
    "number": "1801891080",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6201 GREENLEIGH AVE",
            "city": "MIDDLE RIVER",
            "state": "MD",
            "postal_code": "212202004",
            "telephone_number": "410-933-6423"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 N WOLFE ST",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212870005",
            "telephone_number": "410-933-4397"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "JOHNS HOPKINS UNIVERSITY",
        "organizational_subpart": "NO",
        "enumeration_date": "2005-06-15",
        "last_updated": "2026-07-09",
        "certification_date": "2026-07-09",
        "status": "A",
        "authorized_official_last_name": "GIARRATANO",
        "authorized_official_first_name": "NICHOLAS",
        "authorized_official_title_or_position": "DIRECTOR PROVIDER ENROLLMENT",
        "authorized_official_telephone_number": "410-933-0000"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "MD",
            "license": null,
            "primary": true
        },
        {
            "code": "207RC0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Clinical Cardiac Electrophysiology",
            "state": "MD",
            "license": null,
            "primary": false
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "MD",
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "099240700",
            "state": "DC"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "767051600",
            "state": "MD"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RRMC",
            "identifier": "CL0061",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "JHU - CARDIOLOGY",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "JHU - CARDIOLOGY",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Baltimore, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 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.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.