Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Willamette Valley Immunology Center PC

Internal Medicine Physician in Portland, OR · enumerated 2010 · authorized official Thomas Saddoris, Physician Owner.

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

National Provider Identifier

1952622508

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Registry record

Entity type Organization (Type 2)

Legal business name Willamette Valley Immunology Center PC

Practice address 169 Ne 102nd Ave, Portland, OR, 97220

Phone (503) 262-7273

Fax (503) 262-7274

Enumeration date Jun 17, 2010

Last updated in NPPES Jun 17, 2010

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD10197 (OR) Primary

Authorized official

Name Thomas Saddoris

Title Physician Owner

Phone (503) 262-7273

Other identifiers

Identifier	Type	State	Issuer
18374	Medicaid	OR	-

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 is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Willamette Valley Immunology Center PC?

Willamette Valley Immunology Center PC is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-17.