Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Joseph Robert Hahn, R.N.

Q: What is the NPI number for Joseph Hahn?

The National Provider Identifier (NPI) for Joseph Hahn is 1629197702, a Type 1 (individual) record in the CMS NPPES registry.

Psychiatric/Mental Health Registered Nurse in Modesto, CA · enumerated 2007 · practices at Stanislaus County Bhrs.

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

National Provider Identifier

1629197702

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Registry record

Entity type Individual (Type 1)

Name Mr. Joseph Robert Hahn

Credential R.N.

Sex Male

Practice address 500 N 9th St, Suite A, Modesto, CA, 95350

Phone (209) 558-4600

Fax (209) 558-4702

Enumeration date Mar 28, 2007

Last updated in NPPES Aug 1, 2013

Taxonomy & licenses

163WP0808X Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 637879 (CA) 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 Joseph Hahn?

The National Provider Identifier (NPI) for Joseph Hahn is 1629197702, a Type 1 (individual) record in the CMS NPPES registry.

Where does Joseph Hahn practice?

The practice location on file with NPPES is in Modesto, 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 2013-08-01.