Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ruth Priscilla Masterson, RNCS

Psychiatric/Mental Health Clinical Nurse Specialist in Lynn, MA · enumerated 2005 · practices at Element Care, Inc..

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

National Provider Identifier

1801898846

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Registry record

Entity type Individual (Type 1)

Name Ruth Priscilla Masterson

Credential RNCS

Sex Female

Practice address 37 Friend St, Lynn, MA, 01902

Phone (781) 715-3816

Enumeration date Aug 10, 2005

Last updated in NPPES Jan 28, 2025

Taxonomy & licenses

163WP0808X Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 143918 (MA) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 143918 (MA) Secondary

364SP0808X Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 143918 (MA) Primary

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 is the NPI number for Ruth Masterson?

The National Provider Identifier (NPI) for Ruth Masterson is 1801898846, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ruth Masterson practice?

The practice location on file with NPPES is in Lynn, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Element Care, Inc. PACE Provider Organization · Lynn, MA NPI 1184600660 Kathleen Savage Gerontology Nurse Practitioner · Lynn, MA NPI 1376529719 Joanna Duby Geriatric Medicine (Internal Medicine) Physician · Lynn, MA NPI 1184602005 Constance Mills Adult Health Nurse Practitioner · Lynn, MA NPI 1770684433 Cole Gill Clinical Social Worker · Lynn, MA NPI 1326110487 Denise Boisvert Psychiatric/Mental Health Nurse Practitioner · Lynn, MA NPI 1770657199 Christine Redding Nurse Practitioner · Lynn, MA NPI 1629144332 Kristen Briggs Occupational Therapist · Lynn, MA NPI 1649337155

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-28.