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Robert David Leone, MD

Internal Medicine Physician in Baltimore, MD · enumerated 2010 · practices at Johns Hopkins Medical Institutions.

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

National Provider Identifier

1578880977

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Registry record

Entity type Individual (Type 1)
Name Robert David Leone
Credential MD
Sex Male
Practice address 1650 Orleans St, Crb1 191, Baltimore, MD, 21287
Phone (410) 614-4459
Enumeration date Apr 23, 2010
Last updated in NPPES Jun 12, 2013

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MT196922 (PA) Secondary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License MT196922 (PA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D0075666 (MD) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Robert Leone?
Robert Leone is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-06-12.