Mark Harris, LCSW
Clinical Social Worker · Matteson, IL
Mark Harris, LCSW is a clinical social worker with a practice address in Matteson, Illinois, and NPI 1083217061, issued on Nov 20, 2020. Check the license (Illinois 149026521, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Harris
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 149026521 IL
Self-reported in NPPES; status is on the state search - Practice location
- 21205 Sophia Dr, Matteson, IL 60443
- Phone
- (708) 271-7363
- Enumerated
- Nov 20, 2020
- Record last updated
- Jul 6, 2026
- Medicare enrollment
- Enrolled (PECOS I20250116002131); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Mark Harris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 149026521Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
One hospital affiliation
- Loretto HospitalChicago, IL · Acute Care Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
38 clinical social worker records list a practice address in Matteson
They are 38 of the 363 NPPES records with a practice address in Matteson, and 13,637 clinical social worker records in Illinois.
All 38 in Matteson → All 13,637 in Illinois → Every provider in Matteson →
Other clinical social worker records in Illinois
- Leah A' Hearn, LCSWSavoy, IL1124790829
- Bruce AaronChicago, IL1013069087
- Melissa Aaron, LCSWWest Frankfort, IL1437505526
- Marcus Abate, MSWAurora, IL1679904767
- Nadia Abbas, LCSWChicago, IL1578176400
- Trisha Abbey, LCSWPalatine, IL1477970176
- Mary Abbott, LCSWElgin, IL1073787685
- Susan Abbott, LCSWOak Park, IL1235456930
- Ghada AbdallaChampaign, IL1235015553
- Samella Abdullah, PH.D.Chicago, IL1356404263
Common questions
What is Mark Harris, LCSW's NPI number?
Mark Harris, LCSW's National Provider Identifier (NPI) is 1083217061, issued on Nov 20, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Mark Harris, LCSW located?
The NPPES record lists a practice address at 21205 Sophia Dr, Matteson, IL, 60443. Phone: (708) 271-7363. Providers update this record themselves, so call before visiting.
How can I verify Mark Harris, LCSW's license?
NPPES lists Illinois license number 149026521, 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), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.