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Diane Montefalcon Castignani, FNP

Nurse Practitioner in San Jose, CA · enumerated 2017 · practices at University Healthcare Alliance.

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

National Provider Identifier

1881132801

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Registry record

Entity type Individual (Type 1)
Name Diane Montefalcon Castignani
Credential FNP
Sex Female
Practice address 798 S Winchester Blvd, San Jose, CA, 95128
Phone (408) 984-7226
Fax (408) 984-7225
Enumeration date Feb 9, 2017
Last updated in NPPES Jul 11, 2022

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95005831 (CA) Primary
FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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.

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Frequently asked questions

Where does Diane Castignani practice?
The practice location on file with NPPES is in San Jose, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diane Castignani?
The National Provider Identifier (NPI) for Diane Castignani is 1881132801, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-11.