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

Mary Jean Witherall, LMSW

Individual provider Social Worker · NPI 1750398376

Mary Jean Witherall, LMSW is a Social Worker in Mason City, Iowa. Licensed in Iowa. Registered with an NPI since 2006.

Licensed in
IA
In the registry since
2006
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

See every abbreviation used in this directory →

Practice location Address checks out

235 S Eisenhower Ave
Mason City, IA 50401-1562
Phone: (641) 424-2075
Fax: (641) 424-9555
Show map & directions

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

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 06229 (IA)

Record details

NPI number1750398376
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMSW
Sole proprietorNo
NPI enumeratedAugust 3, 2006
Last updated in NPPESJuly 8, 2007

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