NPIMap

Organization Active NPI

Johns Hopkins University

Doing business as Jhu - 301 Mason Lord Dr Ste 1300 - Provider Type 20

  • Internal Medicine Physician
  • Baltimore, MD
National Provider Identifier
1609746189
Registry record updated Nov 10, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Legal business name
JOHNS HOPKINS UNIVERSITY
Doing business as
Jhu - 301 Mason Lord Dr Ste 1300 - Provider Type 20
Practice address
301 Mason Lord Dr Ste 1300
Baltimore, MD 21224-3057
Phone
(410) 550-3350
NPI assigned
Nov 10, 2025
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Nov 10, 2025

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

Authorized official

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

Specialties & licenses 1

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

Addresses

Primary practice location

301 Mason Lord Dr Ste 1300
Baltimore, MD 21224-3057

Mailing address

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

Other names 1

  • JHU - 301 MASON LORD DR STE 1300 - PROVIDER TYPE 20 Doing business as

National Provider Directory

National Provider Directory
Tax ID family
Johns Hopkins Univ Emer439 organizations share this tax ID, including this one

Organizations with this tax ID in the same state 24

This tax ID family is large, so up to 24 of its organizations in the same state are linked here.

View all 24

NPI Registry JSON

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

{
    "created_epoch": "1762732800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1762732800000",
    "number": "1609746189",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6201 GREENLEIGH AVE",
            "city": "BALTIMORE",
            "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": "301 MASON LORD DR STE 1300",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212243057",
            "telephone_number": "410-550-3350"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "JOHNS HOPKINS UNIVERSITY",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-11-10",
        "last_updated": "2025-11-10",
        "certification_date": "2025-11-10",
        "status": "A",
        "authorized_official_last_name": "GIARRATANO",
        "authorized_official_first_name": "NICHOLAS",
        "authorized_official_title_or_position": "DIRECTOR, PROV ENROLLMENT",
        "authorized_official_telephone_number": "410-933-0000"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "JHU - 301 MASON LORD DR STE 1300 - PROVIDER TYPE 20",
            "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 Nov 10, 2025; 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.