Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Diane Marie Quitoriano, R.N., P.H.N.

Case Manager/Care Coordinator in Ventura, CA · enumerated 2008.

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

National Provider Identifier

1639336084

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Registry record

Entity type Individual (Type 1)

Name Mrs. Diane Marie Quitoriano

Credential R.N., P.H.N.

Sex Female

Practice address 2125 Knoll Dr, Ventura, CA, 93003

Phone (805) 981-7640

Fax (805) 654-7611

Enumeration date May 21, 2008

Last updated in NPPES Jan 27, 2009

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 686985 (CA) Secondary

163W00000X Registered Nurse Nursing Service Providers · License 71745 (CA) Secondary

171M00000X Case Manager/Care Coordinator Other Service Providers Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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 Diane Quitoriano?

The National Provider Identifier (NPI) for Diane Quitoriano is 1639336084, a Type 1 (individual) record in the CMS NPPES registry.

Where does Diane Quitoriano practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-27.