Jennifer E. Vogt

Clinton R. Sheffield, M.D. is a board-certified physician specializing in internal medicine and pediatrics. He received his medical degree from the University of Texas Southwestern Medical Center in Dallas and completed residency in both internal medicine and pediatrics at the University of Rochester in New York. As an internist and a pediatrician, he provides specialized primary care for both adults and children. Dr. Sheffield enjoys the complexities of today’s health care while caring about meaningful relationships with patients and their families. Fluent in Spanish, he has done research...

Cindy L. E. Gellner, M.D., is a board-certified physician specializing in pediatrics. She received her bachelor degrees in biology and psychology in 1991 from Austin College, then worked at the United Network for Organ Sharing (UNOS) in organ transplantation. She received her master's degree in pharmacy from the University of Texas in 1998, and was a Toxicologist for the U. S. Air Force Center for Environmental Excellence. Following Dr. Gellner's diverse experience, in 2003, she received her medical degree from the University of Texas Health Science Center. Dr. Gellner completed her residency in pediatrics at MetroHealth Medical Center Children's Hospital, part of Case Western Reserve School of Medicine in 2006. Dr. Gellner is a member of the American Academy of Pediatrics. Dr. Gellner's professional interests include allergy and asthma management, Reach Out and Read, and preventive care. Her hobbies include traveling and enjoying the outdoors with her husband, 2 sons, and pet beagle. Welcoming New Patients

Crystal Armstrong, MD, is a board-certified family medicine physician. She obtained her medical degree from the Medical College of Wisconsin and completed a family medicine residency from the University of Utah. She is a member of the American Academy of Family Physicians, as well as the American Medical Association. Dr. Armstrong's professional interests include playing the piano, hiking, running and reading. Very limited availability for new patients.