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Washington Internal Medicine Limited

Q: What is the NPI number for Washington Internal Medicine Limited?

The NPI for Washington Internal Medicine Limited is 1770523573, a Type 2 (organization) record in the CMS NPPES registry.

Internal Medicine Physician in Washington, PA · enumerated 2006 · authorized official Harry Silvis, President.

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

National Provider Identifier

1770523573

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Registry record

Entity type Organization (Type 2)

Legal business name Washington Internal Medicine Limited

Practice address 400 Locust Ave, Washington, PA, 15301

Phone (724) 222-9300

Fax (724) 222-9246

Enumeration date Jun 8, 2006

Last updated in NPPES Jan 5, 2010

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Harry Silvis

Title President

Phone (724) 222-9300

Other identifiers

Identifier	Type	State	Issuer
996252	Other	PA	HIGHMARK

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

Who is the authorized official for Washington Internal Medicine Limited?

NPPES lists Harry Silvis (President) as the authorized official for this organization.

What is the NPI number for Washington Internal Medicine Limited?

The NPI for Washington Internal Medicine Limited is 1770523573, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-05.