Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Winchester Physician Associates, Inc

Internal Medicine Physician in Winchester, MA · enumerated 2005 · authorized official Eileen Wills, Billing Manager.

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

National Provider Identifier

1184606865

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Registry record

Entity type Organization (Type 2)

Legal business name Winchester Physician Associates, Inc

Other name <Unavail>

Parent organization Winchester Physician Associates, Inc

Practice address 11 Shore Rd, Winchester, MA, 01890

Phone (781) 729-1810

Fax (781) 729-4577

Enumeration date Nov 17, 2005

Last updated in NPPES Jun 30, 2015

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 156047 (MA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 73703 (MA) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 77272 (MA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 70291 (MA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 203423 (MA) Secondary

Authorized official

Name Eileen Wills

Title Billing Manager

Phone (781) 756-7273

Other identifiers

Identifier	Type	State	Issuer
9777229	Medicaid	MA	-

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

What type of organization is Winchester Physician Associates, Inc?

Winchester Physician Associates, Inc is registered in NPPES as a Internal Medicine 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 2015-06-30.