MS. MARY LOU PETTY MSW LCSW
NPI 1598747461
Social Worker - Clinical in Chicago, IL
About Ms. Mary Lou Petty Msw Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARY LOU PETTY MSW LCSW (NPI 1598747461) is an individual clinical provider in Chicago, Illinois and active in the NPI registry since November 2005.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 4
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60602
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 Mary Lou Petty's NPI number?
The NPI number for Mary Lou Petty is 1598747461. It was assigned to this individual provider in the NPPES registry on November 16, 2005. The provider is also known as Mary Lou Trezise.
Where is Mary Lou Petty located?
Mary Lou Petty practices at 30 N Michigan Ave Ste 1004, Chicago, IL 60602. The listed phone number is (312) 236-4364.
What is Mary Lou Petty's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
When was this NPI record last updated?
The NPPES record for Mary Lou Petty was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days 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.