Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Oi Yi Tin-Mejia, MBA, MS, RD

Individual provider Registered Dietitian · NPI 1306249958

Oi Yi Tin-Mejia, MBA, MS, RD is a Registered Dietitian OR Nutrition Professional in Monterey Park, California. Qualified in 2019, 7 years ago. Practices with Providence Medical Institute, a 336-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Licensed in
CA
In the registry since
2014
What do these letters mean?
MBA — Master of Business Administration
A graduate business degree.
MS — Master of Science
A graduate science degree.
RD — Registered Dietitian
A credentialed nutrition professional.

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Practice location Address checks out

224 E Hammel St
Monterey Park, CA 91755-7212
Phone: (626) 319-8883
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 525 N Garfield Ave, Monterey Park, CA 91754-1202 — (626) 307-2041

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 1078313 (CA)

Record details

NPI number1306249958
Entity typeIndividual (Type 1)
GenderFemale
Credentials MBA , MS , RD
Sole proprietorYes
NPI enumeratedSeptember 26, 2014
Last updated in NPPESMarch 31, 2022
Certification dateMarch 31, 2022

Medicare enrollment

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

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Providence Medical Institute — 336 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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