Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

David S. Silverstein, M.D., A Professional Corporation

Ophthalmology Physician in San Jose, CA · enumerated 2007 · authorized official David Silverstein, Sole Proprietor.

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

National Provider Identifier

1134312085

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Registry record

Entity type Organization (Type 2)

Legal business name David S. Silverstein, M.D., A Professional Corporation

Practice address 2512 Samaritan Ct, Suite C, San Jose, CA, 95124

Phone (408) 358-3646

Fax (408) 358-4276

Enumeration date Aug 23, 2007

Last updated in NPPES Jul 18, 2013

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G26932 (CA) Primary

Authorized official

Name David Silverstein

Title Sole Proprietor

Phone (408) 358-3646

Other identifiers

Identifier	Type	State	Issuer
ZZZ05663Z	Other	CA	MEDICARE PTAN

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 type of organization is David S. Silverstein, M.D., A Professional Corporation?

David S. Silverstein, M.D., A Professional Corporation is registered in NPPES as a Ophthalmology Physician (its primary provider taxonomy).

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-07-18.