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JESSICA J SIWAK LCSW
NPI 1477828713
Social Worker - Clinical in Pontiac, IL

Active since March 20, 2012PECOS Enrolled
920 W CUSTER AVE, PONTIAC, IL 61764(815) 844-6109(815) 844-3561 Get Directions Write a Review

NPPES record last updated: June 27, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 27, 2024, Feb 15, 2022, Sep 10, 2021 and 1 more (4 updates tracked since 2020).

About Jessica J Siwak Lcsw NPPES

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

JESSICA J SIWAK LCSW (NPI 1477828713) is an individual clinical provider in Pontiac, Illinois, licensed in Illinois (149.015177) and active in the NPI registry since March 2012. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1477828713
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameJESSICA J SIWAKCredential: LCSW
Location Address920 W CUSTER AVEPontiac, IL 61764-1067
Mailing AddressPo Box 768Pontiac, IL 61764-0768 · (815) 844-6109 · Fax (815) 844-3561
Phone(815) 844-6109
Fax(815) 844-3561
Sole ProprietorNo
Enumeration DateMarch 20, 2012
Last NPPES UpdateJune 27, 20244 updates tracked since enumeration
NPPES CertifiedJune 27, 2024
✔ NPI 1477828713 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 · 149.015177
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.
920 W CUSTER AVE, Pontiac, IL 61764
Open in Google Maps ↗

Other Names 1

Former Name (1)Jessica J Mullen

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jessica J Siwak Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 61764 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 $54.80 – $168.44
Typical copayment $0.00 (range $13.70 – $42.11)
Most-billed visit code NA
Established Patient
$68.64 typical visit price
range $17.16 – $136.56
Typical copayment $17.16 (range $4.29 – $34.14)
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 20

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

LAUREN WHITECOTTON BA
Counselor (Mental Health)
920 W CUSTER AVE
PONTIAC, IL 61764
Livingston County (815) 844-6109
BRITTANY BARLOW MSW
Counselor (Mental Health)
920 W CUSTER AVE
PONTIAC, IL 61764
Livingston County (815) 844-6109
SANDRA BOECKMANN LSW
Counselor (Addiction (Substance Use Disorder))
920 W CUSTER AVE
PONTIAC, IL 61764
Livingston County (815) 844-6109
MELISSA SIDLER MHP
Counselor (Mental Health)
920 W CUSTER AVE
PONTIAC, IL 61764
Livingston County (815) 844-6109
MEREDITH M SPRAGGON MHP
Counselor (Mental Health)
920 W CUSTER AVE
PONTIAC, IL 61764
Livingston County (815) 844-6109
ALYSSA STEIN MHP
Counselor (Mental Health)
920 W CUSTER AVE
PONTIAC, IL 61764
Livingston County (815) 844-6109
KATIE KENNEDY
Counselor (Mental Health)
920 W CUSTER AVE
PONTIAC, IL 61764
Livingston County (815) 844-6109
JULIA EILEEN COTTER PEL
Speech-Language Pathologist
920 W CUSTER AVE
PONTIAC, IL 61764
Livingston County (815) 844-7115

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 Jessica Siwak's NPI number?

The NPI number for Jessica Siwak is 1477828713. It was assigned to this individual provider in the NPPES registry on March 20, 2012. The provider is also known as Jessica J Mullen.

Where is Jessica Siwak located?

Jessica Siwak practices at 920 W Custer Ave, Pontiac, IL 61764. The listed phone number is (815) 844-6109.

What is Jessica Siwak's specialty?

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

Is Jessica Siwak enrolled in Medicare?

Yes. Jessica Siwak is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Jessica Siwak was last updated on June 27, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.