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

MS. Jaeann Mafnas Duenas, MSW

Individual provider Social Worker · NPI 1053853259

MS. Jaeann Mafnas Duenas, MSW is a Social Worker in San Francisco, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2016
Specialties on file
5
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.

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Practice location Address checks out

100 Masonic Ave
San Francisco, CA 94118-4415
Phone: (415) 559-9461
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Counselor (primary) Taxonomy 101Y00000X · Licence ASW102852 (CA)
Social Worker Taxonomy 104100000X · Licence ASW102852 (CA)
Case Manager/Care Coordinator Taxonomy 171M00000X
Community Health Worker Taxonomy 172V00000X (CA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1053853259
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSW
Sole proprietorYes
NPI enumeratedNovember 6, 2016
Last updated in NPPESMay 9, 2023
Certification dateMay 9, 2023

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