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

Mariko Elizabeth Blumenfeld, FNP

Individual provider Registered Nurse · NPI 1750820965

Mariko Elizabeth Blumenfeld, FNP is a Registered Nurse in San Leandro, California. Licensed in California. Registered with an NPI since 2017.

Licensed in
CA
In the registry since
2017
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

13690 E 14th St Ste 200
San Leandro, CA 94578-2584
Phone: (510) 297-0550
Fax: (510) 297-0558
Show map & directions

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

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 95006095 (CA)
Registered Nurse Taxonomy 163W00000X · Licence 95053145 (CA)

Record details

NPI number1750820965
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedFebruary 21, 2017
Last updated in NPPESApril 6, 2022
Certification dateApril 6, 2022

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