Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

River Hospital, Inc.

Q: What type of organization is River Hospital, Inc.?

River Hospital, Inc. is registered in NPPES as a Medicare Defined Swing Bed Hospital Unit (its primary provider taxonomy).

Medicare Defined Swing Bed Hospital Unit in Alexandria Bay, NY · enumerated 2006 · authorized official Emily Mastaler, President and Ceo.

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

National Provider Identifier

1821022781

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name River Hospital, Inc.

Other name <Unavail>

Practice address 4 Fuller St, Alexandria Bay, NY, 13607

Phone (315) 482-1132

Fax (315) 482-4847

Enumeration date Jul 10, 2006

Last updated in NPPES Sep 30, 2020

Taxonomy & classification

275N00000X Medicare Defined Swing Bed Hospital Unit Hospital Units · License 2221700C (NY) Primary

275N00000X Medicare Defined Swing Bed Hospital Unit Hospital Units Secondary

Authorized official

Name Emily Mastaler

Title President and Ceo

Phone (315) 482-2511

Other identifiers

Identifier	Type	State	Issuer
02392854	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

What type of organization is River Hospital, Inc.?

River Hospital, Inc. is registered in NPPES as a Medicare Defined Swing Bed Hospital Unit (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 2020-09-30.