Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel Mendel Harrison, M.D.

Neurology Physician in Baltimore, MD · enumerated 2008.

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

National Provider Identifier

1578733242

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Registry record

Entity type Individual (Type 1)

Name Dr. Daniel Mendel Harrison

Credential M.D.

Sex Male

Practice address 16 S Eutaw Street, 3rd Floot, Baltimore, MD, 21201

Phone (410) 328-3894

Enumeration date Mar 9, 2008

Last updated in NPPES May 7, 2015

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 240225-1 (NY) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License D69474 (MD) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
417960900	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

What specialty is Daniel Harrison?

Daniel Harrison is registered in NPPES with the primary taxonomy of Neurology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Paul Fishman Specialist · Baltimore, MD NPI 1497851760 Allan Krumholz Specialist · Baltimore, MD NPI 1306942677 Marcella Wozniak Neurology Physician · Baltimore, MD NPI 1215033410 Charlene Hafer-Macko Specialist · Baltimore, MD NPI 1124124326 Lynn Grattan Clinical Neuropsychologist · Baltimore, MD NPI 1962595702 Anjeli Inscore Clinical Neuropsychologist · Baltimore, MD NPI 1427245992

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-07.