(815) 844-6109 ihr@ihrpontiac.com

About Us

Executive Staff

Joe Vaughan, LCSW, QMHP, LPHA

Joe Vaughan, LCSW, QMHP, LPHA

Executive Director

Email: vaughan@ihrpontiac.com
Teresa Diemer BS, CRADC, CODP I

Teresa Diemer BS, CRADC, CODP I

Director of Special Initiatives

Jessica Siwak, LCSW, QMHP, LPHA

Jessica Siwak, LCSW, QMHP, LPHA

Clinical Mental Health Director

Jenny Larkin

Jenny Larkin

Business Manager, HR Director

Rebecca Ballard BA, CADC

Rebecca Ballard BA, CADC

Clinical Substance Use Director

Administrative Services Staff

Maddie Isenberg

Maddie Isenberg


Ashley Followell

Administrative Services
Lisa Sieg

Lisa Sieg

Intake Coordinator/Receptionist
Leslie Mays

Leslie Mays

Accounts Receivable
Chelsey Erickson

Chelsey Erickson

Accounts Receivable

Board of Directors

  • Dale Sass, President
  • Dale Hoke, Vice President
  • Julie Runyon, Secretary
  • Nick Milhauser, Treasurer
  • Dan Davis  
  • Becky Edinger
  • Becca Lee
  • Kathleen Boles

Frequently Asked Questions

How much do services cost?

Fees are determined by a sliding scale based on income and number of dependents.  No one will be denied services because of inability to pay.  The following insurances are accepted by most of our providers:

    • Livingston County 708
    • Aetna
    • Aetna Community Care
    • BCBS
    • BCBS Community Care
    • Cigna
    • Com Psych
    • Health Alliance
    • Health Link
    • Humana
    • Life Synch
    • Magellan
    • Medicaid
    • Medicare
    • Meridian
    • Molina
    • Optum
    • DHS – Supr
    • United Behavioral Health
    • United Health Care

    If you have questions regarding insurance coverage, please call us at 815-844-6109.

    How can I get started with services?

    Simply call 815-844-6109 to schedule an appointment. One of our receptionists will be glad to assist you.

    What are the office hours?

    Monday – Wednesday: 8:30 AM to 8:00 PM
    Thursday: 8:30 AM to 5:00 PM
    Friday: 8:30 AM to 4:30 PM

    Are services confidential?

    All services are bound by the Illinois Confidentiality Act and HIPAA. No one, including your employer or a family member will know you are receiving services unless you tell them or give us written permission to do so.