Kelsey-Seybold Clinic is Houston's premier multispecialty group practice, founded in 1949 by Dr. Mavis Kelsey. More than 700 physicians and allied health professionals practice at 35+ locations in the Greater Houston area. Kelsey-Seybold offers quality medical care in 65 medical specialties. The organization operates the largest freestanding Ambulatory Surgery Center in the state of Texas and offers state-of-the-art Varian TrueBeam and Varian Edge radiation therapy technology at a nationally accredited Cancer Center. An accredited Sleep Center, comprehensive laboratory services, advanced imaging and diagnostics, 17 onsite Kelsey pharmacies, MyKelseyOnline (a secure web portal for patients to communicate with their Kelsey-Seybold doctors, get most test results, and schedule appointments), and Telemedicine Services – E-visits and Video Visits with Kelsey-Seybold medical personnel are part of its comprehensive offerings. Kelsey-Seybold partners with major insurers to offer value-based commercial health plans. KelseyCare Advantage, a Medicare Advantage plan offered to Houston-area beneficiaries and affiliated with Kelsey-Seybold Clinic, has achieved the coveted 5-out-of-5-star rating from the Centers for Medicare and Medicaid for seven consecutive years.Kelsey-Seybold has been recognized by the National Committee for Quality Assurance (NCQA) as the nation's first accredited Accountable Care Organization and a Level 3 (highest) Patient-Centered Medical Home. Kelsey-Seybold has many physicians in the Greater Houston area certified for excellence in diabetes and heart and stroke care by the NCQA. In addition to these recognitions, Kelsey-Seybold is home to a nationally accredited Breast Diagnostic Center, and Endoscopy Center.