Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ruth S Larson, NP

Adult Health Nurse Practitioner in Niagara Falls, NY · enumerated 2006 · practices at Niagara Falls Physician Associates P.C..

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

National Provider Identifier

1952362956

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Registry record

Entity type Individual (Type 1)

Name Ruth S Larson

Credential NP

Sex Female

Practice address 620 10th St, Ste. 703, Niagara Falls, NY, 14301

Phone (716) 278-0150

Enumeration date Mar 29, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F303989 (NY) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
02635147	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 specialty is Ruth Larson?

Ruth Larson is registered in NPPES with the primary taxonomy of Adult Health Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Michael Merletti Podiatrist · Niagara Falls, NY NPI 1952377285 Alfred Fast Vascular Surgery Physician · Niagara Falls, NY NPI 1306952049 Niagara Falls Physician Associates P.C. Gastroenterology Physician · Niagara Falls, NY NPI 1568525871

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.