Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ontario Pathology Group, LLP

Anatomic Pathology & Clinical Pathology Physician in Ontario, OR · enumerated 2006 · authorized official Eric Rysenga, Partner.

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

National Provider Identifier

1821028689

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Registry record

Entity type Organization (Type 2)

Legal business name Ontario Pathology Group, LLP

Practice address 351 S.W. Ninth St., Ontario, OR, 97914

Phone (541) 881-5331

Enumeration date Jul 4, 2006

Last updated in NPPES Aug 26, 2007

Taxonomy & classification

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Eric Rysenga

Title Partner

Phone (541) 881-5331

Other identifiers

Identifier	Type	State	Issuer
287920	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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-08-26. Verify at npiregistry.cms.hhs.gov.

Where is Ontario Pathology Group, LLP located?

The practice location on file with NPPES is in Ontario, OR.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-26.