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Margaret Moss Ellison, APRN, BC

Gerontology Nurse Practitioner in Waltham, MA · enumerated 2007 · practices at Optum Palliative and Hospice Care, Inc..

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

National Provider Identifier

1174674261

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Registry record

Entity type Individual (Type 1)
Name Margaret Moss Ellison
Credential APRN, BC
Sex Female
Practice address 950 Winter St, Suite 3800, Waltham, MA, 02451
Phone (781) 472-8592
Enumeration date Jan 15, 2007
Last updated in NPPES Apr 14, 2015

Taxonomy & licenses

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 216415 (MA) Primary
APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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

Where does Margaret Ellison practice?
The practice location on file with NPPES is in Waltham, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Margaret Ellison?
The National Provider Identifier (NPI) for Margaret Ellison is 1174674261, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-14.