Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melessa Hirschhorn, REGISTERED NURSE

Neuroscience Registered Nurse in Oakland, CA · enumerated 2023.

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

National Provider Identifier

1184499147

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Registry record

Entity type Individual (Type 1)

Name Melessa Hirschhorn

Credential REGISTERED NURSE

Sex Female

Practice address 744 52nd St Fl 5, Oakland, CA, 94609

Phone (925) 964-5925

Enumeration date Nov 20, 2023

Last updated in NPPES Nov 20, 2023

Taxonomy & licenses

163WN0800X Neuroscience Registered Nurse Nursing Service Providers · License 586489 (CA) Primary

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

Where does Melessa Hirschhorn practice?

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

What is the NPI number for Melessa Hirschhorn?

The National Provider Identifier (NPI) for Melessa Hirschhorn is 1184499147, a Type 1 (individual) record in the CMS NPPES registry.

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Jennifer Martelle Tu Neurology with Special Qualifications in Child Neurology Physician · Oakland, CA NPI 1497071799 Jacquelyn Gold Neurology with Special Qualifications in Child Neurology Physician · Oakland, CA NPI 1407260532 Heather Harris Genetic Counselor (M.S.) · Oakland, CA NPI 1891581864

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-20.