NPIMap

Organization Active NPI

Johns Hopkins University

Doing business as Jhu - 4940 Eastern Ave- Provider Type: 10 -Lab

  • Clinical Pathology/Laboratory Medicine Physician
  • Baltimore, MD
National Provider Identifier
1093674442
Registry record updated Jan 21, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Pathology/Laboratory Medicine PhysicianTaxonomy code 207ZP0105X
Legal business name
JOHNS HOPKINS UNIVERSITY
Doing business as
Jhu - 4940 Eastern Ave- Provider Type: 10 -Lab
Practice address
4940 Eastern Ave
Baltimore, MD 21224-2735
Phone
(410) 550-0100
NPI assigned
Jan 21, 2026
Last updated
Jan 21, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jan 21, 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
Clinical Pathology/Laboratory Medicine Physician 207ZP0105X Primary

Addresses

Primary practice location

4940 Eastern Ave
Baltimore, MD 21224-2735

Mailing address

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

Other names 1

  • JHU - 4940 EASTERN AVE- PROVIDER TYPE: 10 -LAB Doing business as

National Provider Directory

National Provider Directory
Tax ID family
Johns Hop Univ Inter Me440 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

4940 Eastern Ave
Baltimore, MD 21224

NPI Registry JSON

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

{
    "created_epoch": "1768953600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1768953600000",
    "number": "1093674442",
    "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": "4940 EASTERN AVE",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212242735",
            "telephone_number": "410-550-0100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "JOHNS HOPKINS UNIVERSITY",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-01-21",
        "last_updated": "2026-01-21",
        "certification_date": "2026-01-21",
        "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": "207ZP0105X",
            "taxonomy_group": "",
            "desc": "Pathology, Clinical Pathology/Laboratory Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "JHU - 4940 EASTERN AVE- PROVIDER TYPE:  10 -LAB",
            "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 Jan 21, 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.