Our Spenser R. Berthelsen, MD, Main Campus multispecialty medical clinic makes it easy to get the comprehensive care you need. Located just outside the Texas Medical Center, our Main Campus offers primary and specialty care, plus an on-site Kelsey Pharmacy, laboratory, X-ray, and advanced diagnostic services, including CT, MRI, digital mammography with 3D breast tomosynthesis, and PET scans - all under one roof. The Berthelsen Main Campus also boasts a nationally accredited Cancer Center, Breast Diagnostic Center, and the largest freestanding Ambulatory Surgery Center in Texas. Kelsey-Seybold Clinic - Main Campus offers free parking and accepts most major insurance plans, so access our 24/7 scheduling options to make your appointment now.