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

Mary Seiersen, RDE

Individual provider Nutritionist · NPI 1538282983

Mary Seiersen, RDE is a Nutritionist in Los Alamitos, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
Specialties on file
3

Practice location Address checks out

3851 Katella Ave Ste 275
Los Alamitos, CA 90720-3377
Phone: (562) 296-5528
Fax: (562) 296-8506
Show map & directions

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

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X
Nutritionist Taxonomy 133N00000X
Diabetes Educator Registered Nurse Taxonomy 163WD0400X · Licence 711000 (CA)

Record details

NPI number1538282983
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDE
Sole proprietorNo
NPI enumeratedApril 9, 2007
Last updated in NPPESDecember 28, 2023
Certification dateDecember 28, 2023
Mailing address15464 Goldenwest St, Westminster, CA 92683-6149