Registry data as of Aug 27, 2026

Mary Leonhardt

Social Worker · Oak Forest, IL

Mary Leonhardt is a social worker with a practice address in Oak Forest, Illinois, and NPI 1093363830, issued on Aug 26, 2019. Check the license (Illinois 150.103802, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1093363830
Name
Mary Leonhardt
Primary taxonomy
Social Worker 104100000X
License number
150.103802 IL
Self-reported in NPPES; status is on the state search
Practice location
6006 159TH St Bldg C, Oak Forest, IL 60452
Phone
(708) 535-7320
Enumerated
Aug 26, 2019
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 6006 159TH St Bldg C

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sara AllenProfessional Counselor1023653334
  2. David Barecki, PSY.D.Clinical Psychologist1124388574
  3. Kimberly De Jong, MA, LPCProfessional Counselor1093727281
  4. Anne Morrill-Ploum, MAMental Health Counselor1619081353
  5. Katarzyna Rabianski, M.A., LPCProfessional Counselor1518288646
  6. Tammie Terae Tatum BlakeleyBehavior Analyst1528482544

Verify Mary Leonhardt in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 150.103802    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Social Worker providers in Illinois

There are 6,263 social worker records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 6,263 in Illinois → Every provider in Oak Forest →

Other social worker records in Illinois

  1. Melissa Aaron, LCSWWest Frankfort, IL1437505526
  2. Linda Abbott, LSWSkokie, IL1104117795
  3. Stefani AbdaiMcHenry, IL1073297719
  4. Yasmeen AbdelhamidNorthbrook, IL1528876422
  5. Halimo AbdulkarimNaperville, IL1700588746
  6. Alwin AbrahamWoodridge, IL1063925501
  7. Laurie AburtoElk Grove Village, IL1245911817
  8. Ilse AcevedoChicago, IL1790324515
  9. Maritza Aceves, BAWestern Springs, IL1326547530
  10. Ashley Ackerman, LSW, MSW, PH.D.Wheaton, IL1881401487

Common questions

What is Mary Leonhardt's NPI number?

Mary Leonhardt's National Provider Identifier (NPI) is 1093363830, issued on Aug 26, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Mary Leonhardt located?

The NPPES record lists a practice address at 6006 159TH St Bldg C, Oak Forest, IL, 60452. Phone: (708) 535-7320. Providers update this record themselves, so call before visiting.

How can I verify Mary Leonhardt's license?

NPPES lists Illinois license number 150.103802, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.