NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Watertown Internists PC

Internal Medicine Physician in Watertown, NY · enumerated 2006 · authorized official Collins Kellogg, President.

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

National Provider Identifier

1609844463

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Watertown Internists PC
Practice address 53-59 Public Square, Suite 301, Watertown, NY, 13601
Fax (315) 782-5123
Enumeration date Mar 9, 2006
Last updated in NPPES Aug 17, 2018

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Collins Kellogg
Title President

Other identifiers

Identifier Type State Issuer
01108621 Medicaid NY -
CN1323 Other NY RAILROAD MEDICARE

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 Watertown Internists PC?
Watertown Internists PC 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.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-17.