Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Johns Hopkins University

Addiction Medicine (Preventive Medicine) Physician in Baltimore, MD · enumerated 2020 · authorized official Nicholas Giarratano, Director, Provider Enrollment.

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

National Provider Identifier

1447852215

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Registry record

Entity type Organization (Type 2)

Legal business name Johns Hopkins University

Other name <Unavail>

Practice address 600 N Wolfe St, Baltimore, MD, 21287

Phone (410) 955-2910

Fax (410) 502-5440

Enumeration date Nov 16, 2020

Last updated in NPPES Mar 18, 2026

Taxonomy & classification

2083A0300X Addiction Medicine (Preventive Medicine) Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Nicholas Giarratano

Title Director, Provider Enrollment

Phone (410) 933-0000

Other identifiers

Identifier	Type	State	Issuer
666561600	Medicaid	MD	-

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-03-18. Verify at npiregistry.cms.hhs.gov.

Where is Johns Hopkins University located?

The practice location on file with NPPES is in Baltimore, MD.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-18.