NPIMap

Organization Active NPI

Johns Hopkins University

Doing business as Jhu-501 W 7TH St FL 1-Providertype: 20-Physician

  • Pediatric Nephrology Physician
  • Frederick, MD
National Provider Identifier
1790655561
Registry record updated Nov 7, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatric Nephrology PhysicianTaxonomy code 2080P0210X
Legal business name
JOHNS HOPKINS UNIVERSITY
Doing business as
Jhu-501 W 7TH St FL 1-Providertype: 20-Physician
Practice address
501 W 7TH St Ste 1
Frederick, MD 21701-4596
Phone
(443) 997-5437
NPI assigned
Nov 7, 2025
Last updated
Nov 7, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Nov 7, 2025

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
Pediatric Nephrology Physician 2080P0210X NU Primary

Addresses

Primary practice location

501 W 7TH St Ste 1
Frederick, MD 21701-4596

Mailing address

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

Other names 1

  • JHU-501 W 7TH ST FL 1-PROVIDERTYPE: 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

Locations

501 W 7th St
Ste 1
Frederick, MD 21701
Phone (443) 997-5437

NPI Registry JSON

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

{
    "created_epoch": "1762473600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1762473600000",
    "number": "1790655561",
    "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": "501 W 7TH ST STE 1",
            "city": "FREDERICK",
            "state": "MD",
            "postal_code": "217014596",
            "telephone_number": "443-997-5437"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "JOHNS HOPKINS UNIVERSITY",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-11-07",
        "last_updated": "2025-11-07",
        "certification_date": "2025-11-07",
        "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": "2080P0210X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Nephrology",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "JHU-501 W 7TH ST FL 1-PROVIDERTYPE: 20-PHYSICIAN",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Frederick, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 7, 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.