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

Mr. Joseph C. Smihula, NP

Adult Health Nurse Practitioner in Santa Rosa, CA · enumerated 2006.

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

National Provider Identifier

1154421873

Verified

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Registry record

Entity type Individual (Type 1)

Name Mr. Joseph C. Smihula

Credential NP

Sex Male

Practice address Santa Rosa, CA, 95403

Phone (707) 528-1050

Fax (707) 525-3874

Enumeration date Sep 23, 2006

Last updated in NPPES Apr 28, 2021

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

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 16859 (CA) Primary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NP699679 (CA) Secondary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
699678	Other	CA	RN LICENSE
699679	Other	CA	NP LICENSE

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 Joseph Smihula practice?

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

What is the NPI number for Joseph Smihula?

The National Provider Identifier (NPI) for Joseph Smihula is 1154421873, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-28.