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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Johns Hopkins University

Clinical Medical Laboratory in Baltimore, MD · enumerated 2006 · authorized official Nick Giarrantano, Prov.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1447221726

Verified

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Registry record

Entity type Organization (Type 2)
Legal business name Johns Hopkins University
Other name <Unavail>
Parent organization Johns Hopkins University
Practice address 600 N Wolfe St, Carnegie 417, Baltimore, MD, 21287
Phone (410) 933-1328
Enumeration date Jan 27, 2006
Last updated in NPPES Jul 22, 2025

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Nick Giarrantano
Title Prov
Phone (410) 933-0000

Other identifiers

Identifier Type State Issuer
W446JO Other MD BLUE CROSS/BLUE SHIELD
171218700 Medicaid MD -
690009457 Other MD RRMC
M8950001 Other MD CARFIRST BLUE SHIELD

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Johns Hopkins University?
The NPI for Johns Hopkins University is 1447221726, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Johns Hopkins University?
NPPES lists Nick Giarrantano (Prov) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-22.