About TOS

Clinic Locations & Hours

Currently, we operate within four state-of-the-art hospitals covering the greater Washington, DC Metropolitan region on down through Richmond, VA. Our modern amenities include space devoted to caring for cancer patients and their families. All clinics operate by appointment only.

Leesburg, VA

The LifeCentre West

Medical Oncology · Radiation Oncology

Mon8:00 AM - 4:00 PM
Tue8:00 AM - 4:00 PM
Wed8:00 AM - 7:00 PM
Thu8:00 AM - 7:00 PM
Fri8:00 AM - 3:00 PM

Springfield, VA

Regional Veterinary Referral Center

Medical Oncology · Radiation Oncology

Mon8:00 AM - 4:00 PM
Tue8:00 AM - 4:00 PM
Wed8:00 AM - 4:00 PM
Thu8:00 AM - 4:00 PM
Fri8:00 AM - 1:00 PM

Richmond, VA

Dogwood Veterinary Emergency & Specialty Center

Medical Oncology

Mon8:00 AM - 4:00 PM
Tue8:00 AM - 4:00 PM
Wed10:00 AM - 7:00 PM
Thu10:00 AM - 7:00 PM
FriClosed

Richmond, VA

Advanced Radiation Treatment Center

Radiation Oncology

Mon7:30 AM - 3:00 PM
Tue7:30 AM - 3:00 PM
Wed7:30 AM - 3:00 PM
Thu7:30 AM - 3:00 PM
Fri7:30 AM - 12:00 PM