Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael J Harrison, MD

Neurological Surgery Physician in N Dartmouth, MA · enumerated 2005.

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

National Provider Identifier

1508849936

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael J Harrison

Credential MD

Sex Male

Practice address 480 Hawthorn St, N Dartmouth, MA, 02747

Phone (508) 973-9150

Fax (508) 973-9155

Enumeration date Nov 21, 2005

Last updated in NPPES Apr 22, 2020

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 11401 (RI) Secondary

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 220233 (MA) 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
7056880	Medicaid	RI	-

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 the NPI number for Michael Harrison?

The National Provider Identifier (NPI) for Michael Harrison is 1508849936, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Harrison practice?

The practice location on file with NPPES is in N Dartmouth, MA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-22.