Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Catherine Marie Ellison, MD
Neurology Physician in Portland, OR · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831191535
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Registry record
Entity type Individual (Type 1)
Name Catherine Marie Ellison
Credential MD
Sex Female
Practice address 1040 Nw 22nd Ave, Suite 420, Portland, OR, 97210
Phone (503) 488-2424
Fax (503) 229-7105
Enumeration date Aug 11, 2005
Last updated in NPPES Sep 16, 2013
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1302223 | Medicaid | WA | - |
| 283226 | 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.
Frequently asked questions
Is NPI 1831191535 active?
Yes, as of the latest NPPES snapshot, NPI 1831191535 is active (record last updated 2013-09-16).
How do I verify Catherine Ellison's NPI record?
Cross-check NPI 1831191535 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Leslie Mcallister Neurology Physician · Portland, OR NPI 1407848831 William Smith Neurology Physician · Portland, OR NPI 1912990938 Phuong Le Corneal and Contact Management Optometrist · Portland, OR NPI 1871575092 David Koon Physical Medicine & Rehabilitation Physician · Portland, OR NPI 1528043205 Marie Valleroy Physical Medicine & Rehabilitation Physician · Portland, OR NPI 1437134178 Gary Ward Physical Medicine & Rehabilitation Physician · Portland, OR NPI 1033194873 Jennifer Lawlor Physical Medicine & Rehabilitation Physician · Portland, OR NPI 1639156375 Christy Powers Family Nurse Practitioner · Portland, OR NPI 1518931443
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-16.