Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Michael J Dorsi, M.D., A Professional Corporation

Neurological Surgery Physician in Ventura, CA · enumerated 2012 · authorized official Michael Dorsi, President.

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

National Provider Identifier

1164768107

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Registry record

Entity type Organization (Type 2)

Legal business name Michael J Dorsi, M.D., A Professional Corporation

Practice address 168 N Brent St, Suite 408, Ventura, CA, 93003

Phone (805) 643-2179

Fax (805) 643-0672

Enumeration date Dec 19, 2012

Last updated in NPPES Dec 19, 2012

Taxonomy & classification

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License A116011 (CA) Primary

Authorized official

Name Michael Dorsi

Title President

Phone (805) 643-2179

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-12-19. Verify at npiregistry.cms.hhs.gov.

Where is Michael J Dorsi, M.D., A Professional Corporation located?

The practice location on file with NPPES is in Ventura, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-19.