Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ellen M Larson, M.D.

Family Medicine Physician in Hamilton, NY · enumerated 2006 · practices at Colgate University.

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

National Provider Identifier

1629029442

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Ellen M Larson

Credential M.D.

Sex Female

Practice address 140 Broad St, Hamilton, NY, 13346

Phone (315) 228-7750

Fax (315) 228-6823

Enumeration date May 15, 2006

Last updated in NPPES Nov 27, 2023

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 217285 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
02194558	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 do I verify Ellen Larson's NPI record?

Cross-check NPI 1629029442 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1629029442 active?

Yes, as of the latest NPPES snapshot, NPI 1629029442 is active (record last updated 2023-11-27).

Other providers at this practice address

Browse all →

Colgate University Student Health Clinic/Center · Hamilton, NY NPI 1881091726

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-27.