Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison N Marrier, PMHNP

Addiction (Substance Use Disorder) Registered Nurse in Fall River, MA · enumerated 2023.

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

National Provider Identifier

1255110102

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Registry record

Entity type Individual (Type 1)

Name Allison N Marrier

Credential PMHNP

Sex Female

Practice address 1010 S Main St, Fall River, MA, 02724

Phone (508) 235-5010

Fax (508) 235-5053

Enumeration date Sep 28, 2023

Last updated in NPPES Jul 18, 2024

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2347084 (MA) Secondary

163WA0400X Addiction (Substance Use Disorder) Registered Nurse Nursing Service Providers · License RN2347084 (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 Allison Marrier?

The National Provider Identifier (NPI) for Allison Marrier is 1255110102, a Type 1 (individual) record in the CMS NPPES registry.

Where does Allison Marrier practice?

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

Other providers at this practice address

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Jesus Sosa Addiction Medicine (Preventive Medicine) Physician · Fall River, MA NPI 1508850975 Teresa Ferreira Nurse Practitioner · Fall River, MA NPI 1811958663 Charles Cummings Family Medicine Physician · Fall River, MA NPI 1407811615 Arthur Daily Dermatology Physician · Fall River, MA NPI 1194898551 Madeline Colon-Usowicz Family Medicine Physician · Fall River, MA NPI 1841340734 Fall River Internal Medicine Internal Medicine Physician · Fall River, MA NPI 1790986297 St Anne'S Hospital Family Medicine Physician · Fall River, MA NPI 1134323603 St Anne'S Hospital Internal Medicine Physician · Fall River, MA NPI 1477757615

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-18.