Alyssa Marie O'brien, RD - Medicare Dietitian in Portland, OR

Alyssa Marie O'brien, RD is a medicare enrolled "Dietitian, Registered" provider in Portland, Oregon. Her current practice location is 1111 Ne 99th Ave, Portland, Oregon. You can reach out to her office (for appointments etc.) via phone at (503) 963-2707.

Alyssa Marie O'brien is licensed to practice in Oregon (license number LD-D-10184454) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1023483799.

Contact Information

Alyssa Marie O'brien, RD
1111 Ne 99th Ave,
Portland, OR 97220-9428
(503) 963-2707
(503) 963-2802

Map and Direction




Healthcare Provider's Profile

Full NameAlyssa Marie O'brien
GenderFemale
SpecialityDietitian, Registered
Location1111 Ne 99th Ave, Portland, Oregon
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1023483799
  • Provider Enumeration Date: 12/07/2015
  • Last Update Date: 07/21/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 1951675495
  • Enrollment ID: I20170921001075

Medical Identifiers

Medical identifiers for Alyssa Marie O'brien such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023483799NPI-NPPES
2086834MedicaidWA
500732181MedicaidOR

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
133V00000XDietitian, Registered 984417 (* (Not Available))Secondary
133V00000XDietitian, Registered LD-D-10184454 (Oregon)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Alyssa Marie O'brien allows following entities to bill medicare on her behalf.
Provider NameGi Nutrition Nw, Llc
Provider TypePart B Supplier - Clinic/group Practice
Provider IdentifiersNPI Number: 1427632884
PECOS PAC ID: 7911395348
Enrollment ID: O20211103002566

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Alyssa Marie O'brien is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Alyssa Marie O'brien, RD
847 Ne 19th Ave Ste 300,
Portland, OR 97232-2686

Ph: (503) 963-2801
Alyssa Marie O'brien, RD
1111 Ne 99th Ave,
Portland, OR 97220-9428

Ph: (503) 963-2707

Reviews and Comments


Dietitian, Registered in Portland, OR

Kara Marie Odiaga, RD, CSR, LD
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Phone: 503-493-3322    Fax: 503-287-9434
Mrs. April D Mitsch, RD
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Practice Location: 700 Sw Campus Dr, Portland, OR 97239
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Julie Marie Martin,
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Jennifer Christine Kainani Ching, RD
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Practice Location: 3530 Se 88th Ave, Portland, OR 97266
Phone: 503-772-4335    Fax: 503-772-4337
Mary Ann Weinberg, RD, CNSD, LD
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Phone: 503-494-7597    
Ms. Janet Lee Muckridge, RD LD
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Practice Location: 3550 N Interstate Ave, Nutrition Department East Interstate, Portland, OR 97227
Phone: 503-286-6871    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.