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MARK PIECHOWIAK MSW
NPI 1366874380
Social Worker in Yorkville, IL

Active since August 01, 2013
121 SARAVANOS RD, YORKVILLE, IL 60560(630) 221-7432(630) 882-8409 Get Directions Write a Review

NPPES record last updated: May 4, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 4, 2026, Apr 29, 2026, Dec 13, 2021 (3 updates tracked since 2021).

About Mark Piechowiak Msw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK PIECHOWIAK MSW (NPI 1366874380) is an individual social worker in Yorkville, Illinois and active in the NPI registry since August 2013.

NPPES Registry Identity

NPI1366874380
Entity TypeIndividualMale
Primary Taxonomy104100000X
Provider Legal NameMARK PIECHOWIAKCredential: MSW
Location Address121 SARAVANOS RDYorkville, IL 60560-5813
Mailing Address121 Saravanos RdYorkville, IL 60560-5813 · (630) 966-4450 · Fax (630) 882-8409
Phone(630) 221-7432
Fax(630) 882-8409
Sole ProprietorNo
Enumeration DateAugust 1, 2013
Last NPPES UpdateMay 4, 20263 updates tracked since enumeration
NPPES CertifiedMay 4, 2026
✔ NPI 1366874380 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
121 SARAVANOS RD, Yorkville, IL 60560
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Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MAYRA MORALES
Counselor (Mental Health)
121 SARAVANOS RD
YORKVILLE, IL 60560
Kendall County (630) 966-4466
NATALIE FLORES
Counselor (Mental Health)
121 SARAVANOS RD
YORKVILLE, IL 60560
Kendall County (630) 966-4466

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Piechowiak's NPI number?

The NPI number for Mark Piechowiak is 1366874380. It was assigned to this individual provider in the NPPES registry on August 1, 2013.

Where is Mark Piechowiak located?

Mark Piechowiak practices at 121 Saravanos Rd, Yorkville, IL 60560. The listed phone number is (630) 221-7432.

What is Mark Piechowiak's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Mark Piechowiak was last updated on May 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.