Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joan P. Butler, MSN, FNP-C, PA-C

Nurse Practitioner in Fortuna, CA · enumerated 2006.

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

National Provider Identifier

1407866080

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Joan P. Butler

Credential MSN, FNP-C, PA-C

Sex Female

Practice address 3304 Renner Dr, Fortuna, CA, 95540

Phone (707) 725-4477

Fax (707) 725-9209

Enumeration date Aug 8, 2006

Last updated in NPPES Aug 22, 2014

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License FNP12891 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
RN296119	Medicaid	CA	-

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 specialty is Joan Butler?

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

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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-22.