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

Mark Piechowiak, MSW

Individual provider Social Worker · NPI 1366874380

Mark Piechowiak, MSW is a Social Worker in Yorkville, Illinois. Registered with an NPI since 2013.

In the registry since
2013
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.

See every abbreviation used in this directory →

Practice location Address checks out

121 Saravanos Rd
Yorkville, IL 60560-5813
Phone: (630) 221-7432
Fax: (630) 882-8409
Show map & directions

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

Specialties & licences

Social Worker (primary) Taxonomy 104100000X

Record details

NPI number1366874380
Entity typeIndividual (Type 1)
GenderMale
Credentials MSW
Sole proprietorNo
NPI enumeratedAugust 1, 2013
Last updated in NPPESMay 4, 2026
Certification dateMay 4, 2026
Mailing address121 Saravanos Rd, Yorkville, IL 60560-5813

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