Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Diane Marie Pierce, FNP
Nurse Practitioner in Amesbury, MA · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1912239039
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Registry record
Entity type Individual (Type 1)
Name Mrs. Diane Marie Pierce
Credential FNP
Sex Female
Practice address 24 Morrill Pl, Amesbury, MA, 01913
Phone (978) 388-5050
Enumeration date Feb 1, 2010
Last updated in NPPES Mar 28, 2023
Taxonomy & licenses
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 235016 (MA) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN235016 (MA) Primary
FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan.
About the FNP credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 110090866A | Medicaid | MA | - |
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.
Frequently asked questions
Where does Diane Pierce practice?
The practice location on file with NPPES is in Amesbury, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diane Pierce?
The National Provider Identifier (NPI) for Diane Pierce is 1912239039, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-28.