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Robert J Masi MD Professional Corporation

Ophthalmology Physician in San Jose, CA · enumerated 2010 · authorized official Robert Masi, President.

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

National Provider Identifier

1659693448

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Registry record

Entity type Organization (Type 2)
Legal business name Robert J Masi MD Professional Corporation
Practice address 220 Meridian Ave, San Jose, CA, 95126
Phone (408) 869-3400
Fax (408) 947-7972
Enumeration date Feb 19, 2010
Last updated in NPPES Feb 19, 2010

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G033780 (CA) Primary

Authorized official

Name Robert Masi
Title President
Phone (408) 869-3400

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 a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Robert J Masi MD Professional Corporation?
Robert J Masi MD Professional Corporation is registered in NPPES as a Ophthalmology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-19.