MARY COLLEEN MAHONEY LCSW, CADC
NPI 1629706130
Counselor - Mental Health in Chicago, IL

Active since August 11, 2022Opted out of Medicare · through Apr 24, 2028
155 N MICHIGAN AVE STE 380, CHICAGO, IL 60601(773) 340-2616 Get Directions Write a Review

NPPES record last updated: February 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Feb 11, 2025, Aug 14, 2022 (2 updates tracked since 2022).

About Mary Colleen Mahoney Lcsw, Cadc NPPES

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

MARY COLLEEN MAHONEY LCSW, CADC (NPI 1629706130) is an individual mental health provider in Chicago, Illinois, licensed in Illinois (149.023334) and active in the NPI registry since August 2022. She has opted out of Medicare through April 24, 2028.

NPPES Registry Identity

NPI1629706130
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameMARY COLLEEN MAHONEYCredential: LCSW, CADC
Location Address155 N MICHIGAN AVE STE 380Chicago, IL 60601-7710
Mailing Address870 N State St Apt 2nChicago, IL 60610-3333 · (224) 406-4641
Sole ProprietorNo
Enumeration DateAugust 11, 2022
Last NPPES UpdateFebruary 11, 20252 updates tracked since enumeration
NPPES CertifiedFebruary 11, 2025
NPI 1629706130 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License Licensed in IL · 149.023334
Also ListedCounselor · Addiction (Substance Use Disorder)Taxonomy 101YA0400X · License 35837 (IL)
155 N MICHIGAN AVE STE 380, Chicago, IL 60601

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Opted out of Medicare

Mary Colleen Mahoney Lcsw, Cadc has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from April 24, 2026 through April 24, 2028.

Opt-Out Effective DateApril 24, 2026
Opt-Out In Effect ThroughApril 24, 2028Opt-out affidavits renew automatically every two years unless cancelled

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.

Social Worker (Clinical)
155 N MICHIGAN AVE STE 380
CHICAGO, IL 60601
Counselor (Professional)
155 N MICHIGAN AVE STE 380
CHICAGO, IL 60601
Social Worker (Clinical)
155 N MICHIGAN AVE STE 380
CHICAGO, IL 60601
Social Worker (Clinical)
155 N MICHIGAN AVE STE 380
CHICAGO, IL 60601
Social Worker (Clinical)
155 N MICHIGAN AVE STE 380
CHICAGO, IL 60601
Social Worker (Clinical)
155 N MICHIGAN AVE STE 380
CHICAGO, IL 60601
Social Worker (Clinical)
155 N MICHIGAN AVE STE 380
CHICAGO, IL 60601
Social Worker (Clinical)
155 N MICHIGAN AVE STE 380
CHICAGO, IL 60601

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 Mahoney's NPI number?

The NPI number for Mary Mahoney is 1629706130. It was assigned to this individual provider in the NPPES registry on August 11, 2022.

Where is Mary Mahoney located?

Mary Mahoney practices at 155 N Michigan Ave Ste 380, Chicago, IL 60601. The listed phone number is (773) 340-2616.

What is Mary Mahoney's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Mary Mahoney enrolled in Medicare?

No. Mary Mahoney has opted out of Medicare through April 24, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Mary Mahoney was last updated on February 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.