Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Kathryn A Kolton, FNP

Family Nurse Practitioner in Watertown, NY · enumerated 2005.

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

National Provider Identifier

1811990856

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Registry record

Entity type Individual (Type 1)

Name Ms. Kathryn A Kolton

Credential FNP

Sex Female

Practice address 53-59 Public Sq, Ste 301, Watertown, NY, 13601

Phone (315) 782-2141

Fax (315) 782-5123

Enumeration date May 23, 2005

Last updated in NPPES Oct 25, 2007

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F331378 (NY) Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F300834 (NY) Secondary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
01417885	Medicaid	NY	-
7599473	Other	NY	GHI

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 do I verify Kathryn Kolton's NPI record?

Cross-check NPI 1811990856 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1811990856 active?

Yes, as of the latest NPPES snapshot, NPI 1811990856 is active (record last updated 2007-10-25).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-25.