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Risa Aronson-Fox, D.O.

Internal Medicine Physician in Ludlow, MA · enumerated 2006.

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

National Provider Identifier

1255426136

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Registry record

Entity type Individual (Type 1)
Name Risa Aronson-Fox
Credential D.O.
Sex Female
Practice address 1 Moody St, Ludlow, MA, 01056
Phone (413) 583-2274
Fax (413) 583-6173
Enumeration date Oct 4, 2006
Last updated in NPPES Jan 6, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 214214 (NY) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 64516 (CT) Secondary
207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 156290 (MA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 156290 (MA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

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.

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Frequently asked questions

How do I verify Risa Aronson-Fox's NPI record?
Cross-check NPI 1255426136 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1255426136 active?
Yes, as of the latest NPPES snapshot, NPI 1255426136 is active (record last updated 2021-01-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-06.