With you from discovery and every step forward.

For over 5 decades, we have focused on one mission: to provide outstanding treatment backed by the latest research and a strong commitment to every patient we serve. We believe that giving the best doctors the best tools and treatments enables us to deliver exceptional care. We stand with our patients and their families, supporting their health and well-being at every stage of their journey.

Trust & Credibility

Certified. Accredited. Connected.

Our care is supported by nationally recognized certifications, research networks, and clinical partners.

Ascension St. John Medical Center

Clinical Partner

Ascension St. John Medical Center

Ascension St. John Medical Center in Tulsa, Oklahoma, delivers specialty and 24/7 emergency care and a Level 1 Trauma Center.

Certifications

Partners

Book an Appointment

Schedule your visit with our care team

Choose the option below to book an appointment. Existing patients can access the secure portal, and new patients can call our team to get started.

Existing Patient

Sign in to your patient portal to request, confirm, or manage an appointment.

Open Patient Portal

New Patient

Call our scheduling team to book your first appointment and receive next-step guidance.

Call: (918) 505-3200

Explore Our Care

Discover services, specialists, and research

Learn more about the comprehensive cancer care available at OCSRI — from expert providers and convenient locations to advanced treatment services and ongoing clinical research.

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