Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alyssa Marie O'Brien, RD

Registered Dietitian in Portland, OR · enumerated 2015 · practices at The Oregon Clinic PC.

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

National Provider Identifier

1023483799

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Alyssa Marie O'Brien

Credential RD

Sex Female

Practice address 1111 Ne 99th Ave, Portland, OR, 97220

Phone (503) 963-2707

Fax (503) 963-2802

Enumeration date Dec 7, 2015

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 984417 Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License LD-D-10184454 (OR) Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

Other identifiers

Identifier	Type	State	Issuer
2086834	Medicaid	WA	-
500732181	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

Is NPI 1023483799 active?

Yes, as of the latest NPPES snapshot, NPI 1023483799 is active (record last updated 2022-07-21).

How do I verify Alyssa O'Brien's NPI record?

Cross-check NPI 1023483799 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 →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.