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Michael P Weinstein, MD Inc.

Specialist in Newport Beach, CA · enumerated 2012 · authorized official Cathy Neilson, Office Manager.

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

National Provider Identifier

1164794210

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Registry record

Entity type Organization (Type 2)
Legal business name Michael P Weinstein, MD Inc.
Practice address 360 San Miguel Dr Ste 701, Newport Beach, CA, 92660
Phone (949) 759-3600
Fax (949) 758-0282
Enumeration date Feb 6, 2012
Last updated in NPPES Jan 8, 2013

Taxonomy & classification

174400000X Specialist Other Service Providers · License G054621 (CA) Primary

Authorized official

Name Cathy Neilson
Title Office Manager
Phone (949) 759-3600

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

What is the NPI number for Michael P Weinstein, MD Inc.?
The NPI for Michael P Weinstein, MD Inc. is 1164794210, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Michael P Weinstein, MD Inc.?
NPPES lists Cathy Neilson (Office Manager) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-08.