Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jacenna Mattson, MA

Technician in Seattle, WA · enumerated 2020.

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

National Provider Identifier

1740801935

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Registry record

Entity type Individual (Type 1)

Name Jacenna Mattson

Credential MA

Sex Female

Practice address 1600 E Olive St, Seattle, WA, 98122

Phone (206) 302-2800

Enumeration date Apr 29, 2020

Last updated in NPPES Apr 29, 2020

Taxonomy & licenses

374700000X Technician Nursing Service Related Providers Primary

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.

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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 Jacenna Mattson?

Jacenna Mattson is registered in NPPES with the primary taxonomy of Technician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Vasant Halarnakar Psychiatry Physician · Seattle, WA NPI 1124093372 John Olson Addiction Medicine (Family Medicine) Physician · Seattle, WA NPI 1679512487 Kelly Bliss Psychiatric/Mental Health Nurse Practitioner · Seattle, WA NPI 1295812477 Paul Zarkowski Psychiatry Physician · Seattle, WA NPI 1417036179 Seven Dunsmore Mental Health Counselor · Seattle, WA NPI 1942361829 Arden James Addiction (Substance Use Disorder) Counselor · Seattle, WA NPI 1457412363 Milena Stott Clinical Social Worker · Seattle, WA NPI 1487715223 Jason Czeskleba Mental Health Counselor · Seattle, WA NPI 1124189956

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-29.