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

Mrs. Lydia M Merrigan, RD, LD

Individual provider Registered Dietitian · NPI 1538414206

Mrs. Lydia M Merrigan, RD, LD is a Registered Dietitian in Portland, Oregon. Practices as a sole proprietor. Licensed in Oregon.

Licensed in
OR
In the registry since
2012
What do these letters mean?
RD — Registered Dietitian
A credentialed nutrition professional.
LD — Licensed Dietitian
A dietitian licensed by a state board.

See every abbreviation used in this directory →

Practice location Address checks out

830 NE 47th Ave
Portland, OR 97213-2212
Phone: (503) 215-2404
Fax: (503) 215-0056
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence LD-D-000331 (OR)

Record details

NPI number1538414206
Entity typeIndividual (Type 1)
GenderFemale
Credentials RD , LD
Sole proprietorYes
NPI enumeratedJuly 19, 2012
Last updated in NPPESJuly 19, 2012

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