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Northern Westchester Internal Medicine

Internal Medicine Physician in Yorktown Heights, NY · enumerated 2006 · authorized official Richard Klein, President.

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

National Provider Identifier

1386738664

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Registry record

Entity type Organization (Type 2)
Legal business name Northern Westchester Internal Medicine
Practice address 1872 Commerce St, Yorktown Heights, NY, 10598
Phone (914) 962-3303
Fax (914) 962-4271
Enumeration date Oct 3, 2006
Last updated in NPPES Apr 22, 2013

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 208923 (NY) Primary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 225325 (NY) Secondary
207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 101328 (NY) Secondary

Authorized official

Name Richard Klein
Title President
Phone (914) 962-3303

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 Northern Westchester Internal Medicine?
Northern Westchester Internal Medicine is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-22.