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

Mark Jiaras Ltd

Organization Community/Behavioral Health Agency · NPI 1336502434

Mark Jiaras Ltd is a Community/Behavioral Health Agency in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2016.

Licensed in
IL
In the registry since
2016
What do these letters mean?
Ltd — Limited
A form of business registration, not a clinical qualification.

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Practice location Address checks out

4200 W Peterson Ave Ste 105
Chicago, IL 60646-6074
Phone: (847) 630-3900
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Community/Behavioral Health Agency (primary) Taxonomy 251S00000X · Licence 071-006111 (IL)

Record details

NPI number1336502434
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Jiaras — President · (847) 630-3900
NPI enumeratedApril 5, 2016
Last updated in NPPESApril 5, 2016
Mailing address4200 W Peterson Ave, Suite 105, Chicago, IL 60646-6074

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