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

Johns Hopkins University

Endocrinology, Diabetes & Metabolism Physician in Baltimore, MD · enumerated 2018 · authorized official Nicholas Giarratano, Director, Provider Enrollment.

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

National Provider Identifier

1104300334

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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 2024 E Monument St, Baltimore, MD, 21287
Phone (410) 837-4181
Enumeration date Sep 24, 2018
Last updated in NPPES Mar 18, 2026

Taxonomy & classification

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Nicholas Giarratano
Title Director, Provider Enrollment
Phone (410) 933-0000

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 a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Johns Hopkins University?
Johns Hopkins University is registered in NPPES as a Endocrinology, Diabetes & Metabolism Physician (its primary provider taxonomy).

Providers at this address

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