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About

Chestnut Health Systems is a nonprofit healthcare provider offering substance use treatment, mental health services, and primary care. Headquartered in Bloomington, Illinois, the organization operates 12 U.S. offices and has a presence in Switzerland and the Democratic Republic of the Congo. In Belleville, IL, Chestnut Health Systems has posted local job openings (e.g., Medical Assistant, Juvenile Justice Clinician, Customer Service Representative) and maintains a Belleville address as part of its U.S. offices network. They employ about 394 staff and report roughly $310K in annual revenue. Founded in 1973. If you’re seeking local services in Belleville, you may contact the Belleville office or explore current career opportunities in Belleville on their site.

Clinic Type

Behavioral Health

Address

12 N. 64th St., Belleville, IL 62223

Phone

618-512-1919

Email

csgermanis@chestnut.org

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Adult Substance Use Treatment
  • Adolescent Substance Use Treatment
  • Adult Mental Health Treatment
  • Children and Youth Mental Health Treatment
  • Primary care/preventative services
  • Disease management
  • Medication-assisted recovery treatment (MAR/T)
  • Treatment of acute and chronic illnesses
  • Laboratory
  • Genoa Pharmacy
  • Psychiatric services
  • Crisis intervention
  • Life changes such as marriage, divorce, parenthood, etc.
  • Supported/supervised residential housing
  • Adult group services
  • Outpatient
  • Intensive outpatient
  • Community support services
  • Co-occurring disorders
  • - (unspecified additional services)

Insurance & Payment

  • insurance

payment

Languages Spoken

  • English

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Rehab.com/Google aggregate: 2.51/5 (45 reviews)
  • Drugabuse.com/ProjectKnow.com/Alcohol.org: 3.4/5 (3-4 reviews each)
  • Detox.net: 2.2/5 (4 reviews)

Patients praise

  • Caring, friendly, and skilled staff in some instances
  • Effective recovery programs for some patients
  • Helpful for community members seeking services
  • Staff members with personal experience in recovery being supportive

Common complaints

  • Difficulty reaching staff or scheduling appointments
  • Unprofessional or rude reception staff
  • Administrative and insurance processing issues
  • Perception of being overly focused on medication management
  • Concerns regarding facility cleanliness and patient environment
  • Reports of being condescending or unhelpful towards patients and families

"There's no way to get in with a psychiatrist within a month... the therapists are entirely unhelpful, the receptionist in the medical center is HORRIBLE, the entire place is filthy."

FindRehabCenters.org

"Chestnut is a great 28 day program with the best caregivers. Most of the staff are recovering addicts which makes it better because they know what we are dealing with."

ProjectKnow.com

"I like the caring and friendly people that work here. I'm glad I could be part of their program because I got the best help I could've ever received."

Rehab.com

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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