Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

David Michael Horowitz, MD PC

Internal Medicine Physician in Smithtown, NY · enumerated 2011 · authorized official David Horowitz, President.

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

National Provider Identifier

1487951968

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Registry record

Entity type Organization (Type 2)

Legal business name David Michael Horowitz, MD PC

Practice address 2 Brooksite Dr, Suite210, Smithtown, NY, 11787

Phone (631) 724-4048

Fax (631) 780-6899

Enumeration date Feb 18, 2011

Last updated in NPPES Mar 6, 2024

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 142369 (NY) Primary

Authorized official

Name David Horowitz

Title President

Phone (631) 724-4048

Other identifiers

Identifier	Type	State	Issuer
007735973	Medicaid	NY	-

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

Where is David Michael Horowitz, MD PC located?

The practice location on file with NPPES is in Smithtown, NY.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2024-03-06. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-06.