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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARK HARRIS LCSW
NPI 1083217061
Social Worker - Clinical in Matteson, IL

Active since November 20, 2020PECOS EnrolledAccepts Medicare Assignment
21205 SOPHIA DR, MATTESON, IL 60443(708) 271-7363 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 6, 2026, Jan 6, 2025, Nov 20, 2020 (3 updates tracked since 2020).

About Mark Harris Lcsw NPPES

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

MARK HARRIS LCSW (NPI 1083217061) is an individual clinical provider in Matteson, Illinois, licensed in Illinois (149026521) and active in the NPI registry since November 2020. He is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1083217061
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMARK HARRISCredential: LCSW
Location Address21205 SOPHIA DRMatteson, IL 60443-1860
Mailing Address21205 Sophia DrMatteson, IL 60443-1860 · (708) 271-7363
Phone(708) 271-7363
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateNovember 20, 2020
Last NPPES UpdateJuly 6, 20263 updates tracked since enumeration
NPPES CertifiedJuly 6, 2026
✔ NPI 1083217061 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in IL · 149026521
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
21205 SOPHIA DR, Matteson, IL 60443
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark Harris Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4981132016
PECOS Enrollment IDI20250116002131
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60443 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $60.08 – $183.39
Typical copayment $0.00 (range $15.02 – $45.84)
Most-billed visit code NA
Established Patient
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BHG COUNSELING SERVICES LLC
Social Worker (Clinical)
21205 SOPHIA DR
MATTESON, IL 60443
Cook County (708) 271-7363

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 Mark Harris's NPI number?

The NPI number for Mark Harris is 1083217061. It was assigned to this individual provider in the NPPES registry on November 20, 2020.

Where is Mark Harris located?

Mark Harris practices at 21205 Sophia Dr, Matteson, IL 60443. The listed phone number is (708) 271-7363.

What is Mark Harris's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Mark Harris enrolled in Medicare?

Yes. Mark Harris is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Mark Harris was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 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.