Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Abigail Ann Clark, NP

Nurse Practitioner in Boston, MA · enumerated 2022.

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

National Provider Identifier

1104554096

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Registry record

Entity type Individual (Type 1)

Name Ms. Abigail Ann Clark

Credential NP

Sex Female

Practice address Boston, MA, 02215

Phone (617) 754-9600

Fax (617) 667-8665

Enumeration date Aug 10, 2022

Last updated in NPPES Mar 9, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN2325298 (MA) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2325298 (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 Abigail Clark?

The National Provider Identifier (NPI) for Abigail Clark is 1104554096, a Type 1 (individual) record in the CMS NPPES registry.

Where does Abigail Clark 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

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Maryjane Zimarowski Anatomic Pathology & Clinical Pathology Physician · Boston, MA NPI 1417954595 Carolyn Zelop Maternal & Fetal Medicine Physician · Boston, MA NPI 1376541458 Christine Bryke Clinical Cytogenetics Physician · Boston, MA NPI 1932109527 Maureen Oshea Nurse Practitioner · Boston, MA NPI 1447244694 Charles Haffajee Clinical Cardiac Electrophysiology Physician · Boston, MA NPI 1952397523 Jason Wakakuwa Anesthesiology Physician · Boston, MA NPI 1356337554 Louis Caplan Neurology Physician · Boston, MA NPI 1306833561 Joerg Oettgen Cardiovascular Disease Physician · Boston, MA NPI 1073500997

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-09.