ALYSSA MARIE O'BRIEN RD
NPI 1023483799
Dietitian, Registered in Portland, OR
About Alyssa Marie O'brien Rd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALYSSA MARIE O'BRIEN RD (NPI 1023483799) is an individual dietitian, registered in Portland, Oregon, licensed in Oregon (LD-D-10184454) and active in the NPI registry since December 2015. She maintains 3 additional practice locations and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Alyssa Marie O'brien Rd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Alyssa O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Portland, OR 97210
- Reassigned Medicare billing, Oregon enrollment
- 2 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97220 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORTLAND, OR 97220
PORTLAND, OR 97220
PORTLAND, OR 97220
PORTLAND, OR 97220
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Alyssa O'brien's NPI number?
The NPI number for Alyssa O'brien is 1023483799. It was assigned to this individual provider in the NPPES registry on December 7, 2015.
Where is Alyssa O'brien located?
Alyssa O'brien practices at 1111 NE 99th Ave, Portland, OR 97220. The listed phone number is (503) 963-2707.
What is Alyssa O'brien's specialty?
The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.
Is Alyssa O'brien enrolled in Medicare?
Yes. Alyssa O'brien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Alyssa O'brien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alyssa O'brien reassigns Medicare benefits to Gi Nutrition NW, LLC (Portland, OR). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alyssa O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alyssa O'brien accept?
Health plans from PacificSource Health Plans and Providence Health Plan list Alyssa O'brien as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Alyssa O'brien was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Alyssa Marie O'brien, RD · NPI 1023483799
Dietitian, Registered provider in Portland, Oregon. Individual provider, active in the CMS NPPES registry since December 7, 2015.
## Identity
- **NPI:** 1023483799 (Entity type: Individual)
- **Enumerated:** December 7, 2015
- **Primary specialty:** Dietitian, Registered · taxonomy 133V00000X
- **State license:** LD-D-10184454 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 1111 NE 99TH AVE, Portland, OR 97220-9428
- **Phone:** (503) 963-2707 · **Fax:** (503) 963-2802
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** Gi Nutrition NW, LLC (NPI 1427632884, Portland, OR), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** July 21, 2022
- **Other identifiers:** Medicaid 2086834 (WA); Medicaid 500732181 (OR)
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Source: [NPI Profile](https://npiprofile.com/npi/1023483799) · Data from the CMS NPPES public registry.