The Oncology Institute
Oncology • Glendale, WI • Since 2007 • over 100 clinics and affiliate locations 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
The Oncology Institute (TOI) is a public oncology and hematology care provider founded in 2007, headquartered in Cerritos, California. It delivers comprehensive, value-based cancer care in community settings across multiple states, with a focus on compassionate, high-quality treatment, clinical trials, transfusions, and related services. TOI operates about 100 clinics/affiliate locations, employs over 180 clinicians, and serves roughly 1.9 million patients. Key details: - Industry: Medical Practices; Oncology/Medical Oncology - Public company (Stock: TOI); IPO 2021 - Headquarters: Cerritos, CA - Locations: ~5 offices in the United States - Services: Comprehensive cancer care, chemotherapy, clinical trials, home-care options - Notable stats: ~234 employees in this summary, $502.7M annual revenue (as reported) - Website: theoncologyinstitute.com For the most accurate Glendale details, consider visiting TOI’s site or contacting their offices directly.
Services Offered
Technology & Equipment
Team
Insurance & Payment
Not published.
Languages Spoken
FAQs
What is The Oncology Institute?
A community-based oncology care provider offering a full spectrum of oncology services and precision cancer treatments.
Social Media
Photos
Photos published by The Oncology Institute showing the oncology practice in Glendale, WI.
What Patients Say
Overall sentiment across review platforms: mixed
- Yelp (via MapQuest): 2.5 out of 5 stars (Approximately 18-23 reviews on Yelp)
Patients praise
- Some patients report highly positive experiences with specific doctors and medical staff
- Appreciation for professional, caring, and attentive bedside manner from providers
- Some patients describe the staff as courteous and the office environment as clean
Common complaints
- Difficulties with scheduling appointments and long hold times
- Communication challenges with office staff
- Concerns regarding the clarity of treatment information and coordination of care
- Isolated reports of dissatisfaction with medical care quality
"The staff and doctors are the most caring group of people I had ever met."
- A-Better-Place.com user review"This place is RIDICULOUS! I've been on hold in the past 45 minutes... I just cannot understand how this is even possible."
- Yelp/Yahoo Local user reviewSynthesized from public review platforms as of Jul 11, 2026 - sources: [1][2][3][4].
In the News
- The Oncology Institute Achieves $1.8 Million in Medicare - Apr 13, 2026
- The Oncology Institute Reports First Quarter 2026 Financial Results - May 7, 2026
- The Oncology Institute Reports Third Quarter 2025 Financial - Nov 13, 2025
- The Oncology Institute Appoints Kim Tzoumakas to Board of - Feb 23, 2026
- The Oncology Institute Announces Leadership Promotions - Jan 9, 2026
Information sourced from the clinic's website as of July 11, 2026.
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