Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gillian Marina Ruiz, RD

Individual provider Registered Dietitian · NPI 1598496622

Gillian Marina Ruiz, RD is a Registered Dietitian OR Nutrition Professional in Oro Valley, Arizona. Qualified in 2021, 5 years ago. Practices with Duke Nutrition Experts LLC, a 7-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
5
Licensed in
TX
In the registry since
2022
What do these letters mean?
RD — Registered Dietitian
A credentialed nutrition professional.

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Practice location Address checks out

1846 E Innovation Park Dr
Oro Valley, AZ 85755-1963
Phone: (520) 477-1650
Fax: (520) 829-3551
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 86325355 (TX)

Record details

NPI number1598496622
Entity typeIndividual (Type 1)
GenderFemale
Credentials RD
Sole proprietorYes
NPI enumeratedJune 20, 2022
Last updated in NPPESJune 20, 2022
Certification dateJune 20, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Duke Nutrition Experts Llc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Oro Valley