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

Dr. Carolyn Joanne Ontiveros Hanohano, PHD, PMHNP-BC, APRN

Psychiatric/Mental Health Nurse Practitioner in Ventura, CA · enumerated 2008 · practices at County of Ventura.

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

National Provider Identifier

1760659643

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Registry record

Entity type Individual (Type 1)

Name Dr. Carolyn Joanne Ontiveros Hanohano

Credential PHD, PMHNP-BC, APRN

Sex Female

Practice address Ventura, CA, 93009

Phone (805) 766-0883

Fax (805) 339-1128

Enumeration date May 10, 2008

Last updated in NPPES Aug 9, 2024

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

Taxonomy & licenses

163WP0808X Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 576785 (CA) Secondary

171M00000X Case Manager/Care Coordinator Other Service Providers · License 576785 (CA) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95030733 (CA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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

Is NPI 1760659643 active?

Yes, as of the latest NPPES snapshot, NPI 1760659643 is active (record last updated 2024-08-09).

How do I verify Carolyn Hanohano's NPI record?

Cross-check NPI 1760659643 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Karen Williams-Jones Case Manager/Care Coordinator · Ventura, CA NPI 1033470950 County of Ventura Case Manager/Care Coordinator · Ventura, CA NPI 1346900933 Amanda Grindstaff Case Manager/Care Coordinator · Ventura, CA NPI 1346018363 Jacquelyn Walters Licensed Vocational Nurse · Ventura, CA NPI 1710748561 Jodi Valentin Case Manager/Care Coordinator · Ventura, CA NPI 1790513877 Stephany Araoz Registered Nurse · Ventura, CA NPI 1821889601 Gloria Batarse-Santos Case Manager/Care Coordinator · Ventura, CA NPI 1548051386

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-09.