NPIMap

Organization Active NPI

Johns Hopkins University

Doing business as Jhu - 5505 Hopkins Bayview Cir - Provider Type: 20-Physician

  • Geriatric Medicine (Internal Medicine) Physician
  • Baltimore, MD
National Provider Identifier
1598635401
Registry record updated Feb 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Geriatric Medicine (Internal Medicine) PhysicianTaxonomy code 207RG0300X
Legal business name
JOHNS HOPKINS UNIVERSITY
Doing business as
Jhu - 5505 Hopkins Bayview Cir - Provider Type: 20-Physician
Practice address
5505 Hopkins Bayview Cir
Baltimore, MD 21224-6821
Phone
(410) 550-2300
NPI assigned
Nov 6, 2025
Last updated
Feb 5, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Feb 5, 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
Geriatric Medicine (Internal Medicine) Physician 207RG0300X NU Primary

Addresses

Primary practice location

5505 Hopkins Bayview Cir
Baltimore, MD 21224-6821

Mailing address

6201 Greenleigh Ave
Middle River, MD 21220-2004
Phone (410) 955-5000

Other names 1

  • JHU - 5505 HOPKINS BAYVIEW CIR - PROVIDER TYPE: 20-PHYSICIAN Doing business as

National Provider Directory

National Provider Directory
Tax ID family
Johns Hop Univ Inter Me439 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": "1762387200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1770249600000",
    "number": "1598635401",
    "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": "410-955-5000",
            "fax_number": "410-500-4266"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5505 HOPKINS BAYVIEW CIR",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212246821",
            "telephone_number": "410-550-2300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "JOHNS HOPKINS UNIVERSITY",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-11-06",
        "last_updated": "2026-02-05",
        "certification_date": "2026-02-05",
        "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": "207RG0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Geriatric Medicine",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "JHU - 5505 HOPKINS BAYVIEW CIR - PROVIDER 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 Feb 5, 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.