NPIMap

Organization Active NPI

Johns Hopkins University

Doing business as Jhu -Derm/Path Lab

  • Clinical Medical Laboratory
  • Baltimore, MD
National Provider Identifier
1063483659
Registry record updated Mar 18, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Medical LaboratoryTaxonomy code 291U00000X
Legal business name
JOHNS HOPKINS UNIVERSITY
Doing business as
Jhu -Derm/Path Lab
Practice address
600 N Wolfe St
Blalock Building Room 907
Baltimore, MD 21287-0005
Phone
(410) 955-5000
NPI assigned
Jan 31, 2006
Last updated
Mar 18, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
JOHNS HOPKINS UNIVERSITYAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Mar 18, 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 Medical Laboratory 291U00000X MD Primary

Addresses

Primary practice location

600 N Wolfe St
Blalock Building Room 907
Baltimore, MD 21287-0005

Mailing address

PO Box 64252
Baltimore, MD 21264-4252

Other practice location 1

601 N Caroline St
6TH Floor
Baltimore, MD 21205-2000
Phone (410) 933-1255

Other identifiers 2

IdentifierTypeStateIssuer
776838900MedicaidMD
690005940OtherMDRRMC GROUP#

Other names 1

  • JHU -DERM/PATH LAB Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20040102000156 MD Part B Supplier - Independent Clinical Laboratory 8921903147 Receives reassigned benefits from 1 practitioner
2 other NPIs on this enrollment
This NPI is an additional NPI on the enrollment
Practice locations: Baltimore, MD

Other NPIs on the same Medicare enrollment 2

NPIs listed together on one Medicare enrollment, typically parts of the same organization.

National Provider Directory

National Provider Directory
Tax ID family
Johns Hop Univ Inter Me439 organizations share this tax ID, including this one
Part of
Johns Hop Univ Inter Me

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

600 N Wolfe St
Rm 907
Baltimore, MD 21287
Phone (410) 955-3199

Practitioners & affiliated clinicians

Practitioners 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1138665600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1773792000000",
    "number": "1063483659",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 64252",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212644252"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 N WOLFE ST",
            "address_2": "BLALOCK BUILDING ROOM 907",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212870005",
            "telephone_number": "410-955-5000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "601 N Caroline St",
            "address_2": "6TH FLOOR",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212052000",
            "country_code": "US",
            "telephone_number": "410-933-1255",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "JOHNS HOPKINS UNIVERSITY",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "JOHNS HOPKINS UNIVERSITY",
        "enumeration_date": "2006-01-31",
        "last_updated": "2026-03-18",
        "certification_date": "2026-03-18",
        "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": "291U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Medical Laboratory",
            "state": "MD",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "776838900",
            "state": "MD"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RRMC GROUP#",
            "identifier": "690005940",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "JHU -DERM/PATH LAB",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "JHU -DERM/PATH 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 Mar 18, 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.