Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Mary Ellen Smith, NP

Q: What is the NPI number for Mary Smith?

The National Provider Identifier (NPI) for Mary Smith is 1851495006, a Type 1 (individual) record in the CMS NPPES registry.

Psychiatric/Mental Health Nurse Practitioner in Boston, MA · enumerated 2006.

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

National Provider Identifier

1851495006

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary Ellen Smith

Credential NP

Sex Female

Practice address One Boston Medical Center Place, Boston, MA, 02118

Phone (617) 414-5245

Fax (617) 638-6836

Enumeration date Sep 9, 2006

Last updated in NPPES Oct 24, 2017

Taxonomy & licenses

364SP0809X Adult Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 173162 (MA) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 173162 (MA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mary Smith?

The National Provider Identifier (NPI) for Mary Smith is 1851495006, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Smith practice?

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

Other providers at this practice address

Browse all →

Elizabeth Caronna Developmental - Behavioral Pediatrics Physician · Boston, MA NPI 1174514855 Ricky Kue Emergency Medicine Physician · Boston, MA NPI 1134102395 Deborah Tate Family Nurse Practitioner · Boston, MA NPI 1841275500 Marjorie Arvedon Family Nurse Practitioner · Boston, MA NPI 1376529842 Rosemarie Gordon Pediatrics Physician · Boston, MA NPI 1437240199 Robert Joseph Psychiatry Physician · Boston, MA NPI 1104983659 Ann Trollinger Family Nurse Practitioner · Boston, MA NPI 1396890851 Kalpana Shankar Emergency Medicine Physician · Boston, MA NPI 1831225267

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-10-24.