Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

River Hospital, Inc.

Critical Access Hospital in Alexandria Bay, NY · enumerated 2005 · authorized official Emily Mastaler, Ceo.

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

National Provider Identifier

1003814641

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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) 482-2511

Fax (315) 482-4981

Enumeration date Jul 8, 2005

Last updated in NPPES Sep 13, 2022

Taxonomy & classification

282NC0060X Critical Access Hospital Hospitals · License 2221700C (NY) Primary

282NC0060X Critical Access Hospital Hospitals · License 2221001N (NY) Secondary

Authorized official

Name Emily Mastaler

Title Ceo

Phone (315) 286-9003

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.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2022-09-13. Verify at npiregistry.cms.hhs.gov.

Where is River Hospital, Inc. located?

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

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-13.