Leonard "Tiger" Onsen, MD
Orthopedic Surgery • Ottawa, IL • 5 OSF Medical Group – Orthopedics locations listed locations
Information from public sources; not independently verified. Confirm hours, insurance and appointment availability with the clinic.
Last gathered July 11, 2026. How our information is sourced · Report incorrect information
About
Dr. Leonard "Tiger" Onsen, MD is an orthopedic surgeon at OrthoIllinois in Ottawa, Illinois, with office locations also in Peru, Streator, Princeton, and Mendota. He specializes in knee, shoulder, and elbow surgery, including ligament reconstructions, tendon repairs, and cartilage procedures, with a focus on sports medicine and helping patients return to active lifestyles.
Services Offered
Team
Insurance & Payment
Not published.
Languages Spoken
FAQs
Find a Location
Phone: 815-398-9491 Fax: 815-381-7498 Find a Location
Social Media
Photos
Photos published by Leonard "Tiger" Onsen, MD showing the orthopedic surgery practice in Ottawa, IL.
What Patients Say
Overall sentiment across review platforms: positive
- Healthgrades: N/A (Individual positive review noted) (N/A)
Patients praise
- patient and attentive care
- genuine concern for patients
- excellent surgical skills
- effective communication and patient rapport
"Dr Onsen was very patient and addressed my pain and treated me same day in the office. I am now pain free."
- Healthgrades review"I am very impressed with Dr. Tiger Onsen. He truly seems to enjoy his work and is genuinely concerned about his patients' recovery."
- Facebook review"Dr. Onsen is an excellent surgeon. He sees the athlete in my son not just his next surgery case. He shows that he wants what is best for..."
- Facebook reviewSynthesized from public review platforms as of Jul 11, 2026 - sources: [1][2][3][4].
In the News
- Surgeon and Blues musician brings holistic care to Chicago’s communities | WGN-TV - Aug 27, 2025
- Commentary: Make America Healthy Again report, a new frontier for lawsuit abuse - Tiger Joyce | Western Illinois - Jul 29, 2025
- Dr. Otto Placik: Pioneering AlloClae and Advancing Confidence Surgery in Women’s Health - Venues Today - Aug 27, 2025
- Illinois Tigers open Collinsville Performance Center for year-round training - Worldnews.com - Jun 19, 2026
- Geisinger recognized for orthopaedic specialty care | Alleghanies - Jan 13, 2026
Information sourced from the clinic's website as of July 11, 2026.
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