Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

River Hospital, Inc.

Adult Day Care Clinic/Center in Alexandria Bay, NY · enumerated 2005 · authorized official Emily Mastaler, Chief Executive Officer.

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

National Provider Identifier

1487650065

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name River Hospital, Inc.

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

Phone (315) 482-1116

Fax (315) 482-7153

Enumeration date Jun 28, 2005

Last updated in NPPES Sep 30, 2020

Taxonomy & classification

261QA0600X Adult Day Care Clinic/Center Ambulatory Health Care Facilities · License 221001N (NY) Primary

Authorized official

Name Emily Mastaler

Title Chief Executive Officer

Phone (315) 482-1110

Other identifiers

Identifier	Type	State	Issuer
02390774	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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-09-30. 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

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-30.