Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John H Bernhardt, RN, PHN

Registered Nurse in San Rafael, CA · enumerated 2007.

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

National Provider Identifier

1649464587

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Registry record

Entity type Individual (Type 1)

Name John H Bernhardt

Credential RN, PHN

Sex Male

Practice address 13 Peter Behr Dr, San Rafael, CA, 94903

Phone (415) 473-6651

Fax (415) 473-7505

Enumeration date Sep 4, 2007

Last updated in NPPES Feb 26, 2026

Taxonomy & licenses

163WA0400X Addiction (Substance Use Disorder) Registered Nurse Nursing Service Providers · License 566518 (CA) Secondary

163W00000X Registered Nurse Nursing Service Providers · License 720091 (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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is John Bernhardt?

John Bernhardt is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-26.