NPIMap

Organization Active NPI

Johns Hopkins University

Doing business as Jhu -333 Cassell Dr Ste 2300 - Proovider Type: 20-Physician -

  • Internal Medicine Physician
  • Baltimore, MD
National Provider Identifier
1730024993
Registry record updated Apr 22, 2026
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 -333 Cassell Dr Ste 2300 - Proovider Type: 20-Physician -
Practice address
333 Cassell Dr Ste 2300
Baltimore, MD 21224-6815
Phone
(410) 558-9004
NPI assigned
Apr 22, 2026
Last updated
Apr 22, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Apr 22, 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 1

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

Addresses

Primary practice location

333 Cassell Dr Ste 2300
Baltimore, MD 21224-6815

Mailing address

6201 Greenleigh Ave
Middle River, MD 21220-2004
Phone (410) 933-0000

Other names 1

  • JHU -333 CASSELL DR STE 2300 - PROOVIDER TYPE: 20-PHYSICIAN - Doing business as

National Provider Directory

National Provider Directory
Tax ID family
Johns Hopkins Univ439 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

Locations

333 Cassell Dr
Ste 2300
Baltimore, MD 21224
Phone (410) 550-0644

NPI Registry JSON

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

{
    "created_epoch": "1776816000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1776816000000",
    "number": "1730024993",
    "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": "410-933-0000",
            "fax_number": "410-500-4266"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "333 CASSELL DR STE 2300",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212246815",
            "telephone_number": "410-558-9004"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "JOHNS HOPKINS UNIVERSITY",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-04-22",
        "last_updated": "2026-04-22",
        "certification_date": "2026-04-22",
        "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": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "JHU -333 CASSELL DR STE 2300 - PROOVIDER TYPE: 20-PHYSICIAN -",
            "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 Apr 22, 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.