JOHNS HOPKINS UNIVERSITY – NPI #1558221325
Internal Medicine

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Health Care Provider Taxonomy Code for Internal Medicine

JOHNS HOPKINS UNIVERSITY is a provider located in ANNAPOLIS, MD. NPPES has assigned the NPI number 1558221325 to JOHNS HOPKINS UNIVERSITY on November 14, 2025. It is a Type-2 NPI, indicating this NPI number is associated with an organization. The primary taxonomy selected by this provider is 207RG0100X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Gastroenterology

Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for JOHNS HOPKINS UNIVERSITY below.

NPI Profile for
JOHNS HOPKINS UNIVERSITY

NPI Number
1558221325
Enumeration Date

(about 7 months ago)
Entity Type
Type-2  Organization
Organization health care providers may have a single employee or thousands of employees. An example is an incorporated individual who is an organization's only employee.
Legal Name
JOHNS HOPKINS UNIVERSITY
Primary location
820 BESTGATE RD
ANNAPOLIS, MD 21401-3404
Phone: (410) 224-2116 Fax:
Mailing address
6201 GREENLEIGH AVE
MIDDLE RIVER, MD 21220-2004
Phone: (410) 955-5000 Fax: (410) 500-4266
Organization Subpart
No
Authorized Official
NICHOLAS GIARRATANO
DIRECTOR, PROVIDER ENROLLMENT
Phone: (410) 933-0000
Updated
Certification Date
Nov 14, 2025

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207RG0100X
- Internal Medicine / Gastroenterology (Primary)

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.