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

Theodore E Ritter, ARNP

Family Nurse Practitioner in Kirkland, WA · enumerated 2006.

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

National Provider Identifier

1356430615

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Registry record

Entity type Individual (Type 1)

Name Theodore E Ritter

Credential ARNP

Sex Male

Practice address Kirkland, WA, 98034

Phone (425) 821-9730

Fax (425) 821-9739

Enumeration date Oct 12, 2006

Last updated in NPPES May 10, 2011

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

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP30000303 (WA) Primary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP30000303 (WA) Secondary

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 Theodore Ritter practice?

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

What is the NPI number for Theodore Ritter?

The National Provider Identifier (NPI) for Theodore Ritter is 1356430615, 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 2011-05-10.