Theresa Regan, PhD, CBIS, CAS
Theresa M. Regan, PhD
Accepting New Patients
Theresa Regan, PhD, CBIS, CAS
Theresa M. Regan, PhD
Accepting New Patients


My goal is to identify and help remove barriers to wellness.


Dr. Theresa Regan is a neuropsychologist with over 25 years of experience serving adolescents, adults and seniors in hospital settings.

A neuropsychologist specializes in understanding how changes in the brain impact thinking skills, behavior, emotions and personality.

"I love to help patients increase self-awareness and understand how their brain works," Theresa said.

Theresa has a son in the autism spectrum. She has participated in multiple years of pediatric assessment and intervention for her son, and understands the gifts and challenges of living with autism on a daily basis.

Theresa is a Certified Autism Specialist, credentialed through the International Board of Credentialing and Continuing Education Standards (IBCCES), the leading credentialing organization for professionals in the field of autism, and serves as the Director of the OSF HealthCare Adult Diagnostic Autism Clinic.

Her expertise in brain-behavior relationships, adult and geriatric medical conditions, and autism have led to a set of rare qualifications to provide services to adults with autism.




Education & Experience

Primary Location

OSF Saint Francis - Medical Psychology Services
515 Northeast Glen Oak Avenue Suite 101
Peoria IL 61603

Accepted Insurance

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Additional plans may be accepted. If you don't see your plan listed here, call your insurance provider directly to confirm coverage.

  • Aetna
  • Aetna Better Health
  • Aetna Medicare
  • Aetna MMAI
  • Alliance
  • BCBS IL Blue Choice Preferred
  • BCBS IL Med Advantage HMO & PPO
  • BCBS IL Medicare Select
  • Caterpillar PPO
  • Cigna
  • Cofinity
  • Corvel
  • Employer's Coalition on Health (ECOH)
  • Health Alliance
  • Health Alliance Medicare
  • HealthLink
  • Healthsmart/PPI, Inc./IHG
  • HFN 10 HFN 20
  • HFN CHC-Elite
  • Humana Commercial
  • Humana Medicare
  • Humana MMAI
  • Meridian Medicaid
  • Meridian MMAI
  • Molina Medicaid
  • Molina MMAI
  • Multiplan
  • OSF Direct Access Network
  • Private Healthcare Systems
  • United Healthcare Commercial Plans
  • United Healthcare Medicare
  • Wellcare Medicare
  • Youthcare Medicaid