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Marlene Hillyer , RDN

Dietitian, Registered β€’ Seattle, WA

Active NPI 1336442334 Individual Practitioner Female Practitioner
Practice location in NPPES

8301b 5th Ave Ne
Seattle, WA 981154118

Call 3602094050 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

8301b 5th Ave Ne

Seattle, WA 981154118

Telephone 3602094050
Organization at the Same NPPES Address or Phone
Hazelnut Health Pllc Facility NPI 1144011958

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Vancouver, WA. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

NPI first issued

2010

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Seattle and Washington

603 active clinicians are listed under Dietitian, Registered with a practice address in Seattle, WA (2,134 in Washington).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Seattle

2.8% of these 603 clinicians have the CMS telehealth indicator.

7.5% of these 603 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-08-08
Dietitian, Registered Primary Specialty

NUCC Taxonomy Code: 133V00000X

License # reported to NPPES WA DI60202010

A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.

Dietitian, Registered - Nutrition, Pediatric

NUCC Taxonomy Code: 133VN1004X

License # reported to NPPES WA DI60202010

An individual who is a Board Certified Specialist in Pediatric Nutrition and applies evidence-based nutrition knowledge in providing medical nutrition therapy for pediatric patients. Specialists work directly with healthy and/or ill children (newborn up to 21 years of age) as well as children with special health care needs in a variety of settings (hospitals, community-based and/or family-centered programs, education programs, home, etc.), OR indirectly through management, care coordination, education, quality improvement, or research practice linked specifically to pediatric nutrition.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Washington State Department of Health Provider Lookup.
Look Up on State Board Site

Secondary Practice Locations

101 E 8th St Ste 110

Vancouver, WA 986603294

Phone: 3602094050

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

20 Historical Events
πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) August 08, 2026

Dietitian, Registered (license number reported to NPPES: WA DI60202010)

πŸ“
Updated Business Mailing Address October 29, 2025

Registered at 8301B 5TH AVE NE, SEATTLE, WA 981154118

πŸ‘€
Provider Name / Credentials Updated October 29, 2025

Recorded as MARLENE HILLYER, RDN

πŸ“
Updated Practice Location July 20, 2023

Registered at 8301B 5TH AVE NE, SEATTLE, WA 981154118 (Tel: 2067997010)

πŸ‘€
Provider Name / Credentials Updated July 20, 2023

Recorded as MARLENE HILLYER, RDN, CSP, CD, CLT

πŸ“
Updated Practice Location December 11, 2019

Registered at 7220 LINDEN AVE N, SEATTLE, WA 981035112 (Tel: 2067997010)

πŸ“
Updated Business Mailing Address December 11, 2019

Registered at 7520 19TH AVE NE, SEATTLE, WA 981154432 (Tel: 2067997010)

πŸ‘€
Provider Name / Credentials Updated December 11, 2019

Recorded as MARLENE HILLYER, RDN, CD

βœ…
NPI Profile Active December 21, 2017

NPI status registered as active in NPPES database

πŸ“
Updated Practice Location December 21, 2017

Registered at 8301B 5TH AVE NE, SEATTLE, WA 981154118 (Tel: 2067997010)

πŸ“
Updated Business Mailing Address December 21, 2017

Registered at 8301B 5TH AVE NE, SEATTLE, WA 981154118 (Tel: 2067997010)

πŸ‘€
Provider Name / Credentials Updated December 21, 2017

Recorded as MARLENE HILLYER, RDN CSP CD CNSC CLT

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) December 21, 2017

Nutritionist (license number reported to NPPES: WA DI60202010)

πŸ‘€
Provider Name / Credentials Updated May 26, 2017

Recorded as MARLENE MALTBY, RDN CSP CD CNSC CLT

βœ…
NPI Profile Active October 20, 2015

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) October 20, 2015

Registered at 8301B 5TH AVE NE, SEATTLE, WA 981154118 (Tel: 2067997010)

πŸ“
Business Mailing Address (Initial Record) October 20, 2015

Registered at 8301B 5TH AVE NE, SEATTLE, WA 981154118 (Tel: 2067997010)

πŸ‘€
Provider Name / Credentials (Initial Record) October 20, 2015

Recorded as MARLENE MALTBY, RDN, CSP, CD, CNSC

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) October 20, 2015

Nutritionist (license number reported to NPPES: WA DI60202010)

🟒
Initial NPI Registration & Enumeration December 13, 2010

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1336442334
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: December 13, 2010
Last Update: August 08, 2026
Sole Proprietor: No

Other Dietitian, Registereds in Seattle

All Dietitian, Registereds in Seattle

Mailing Address

8301b 5th Ave Ne

Seattle, WA 981154118

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.