D. Benjamin Udall, M.D. D. Benjamin Udall, M.D. 

joined Junction Medical Clinic in October 2009. He earned his undergraduate degree at the United States Military Academy at West Point, attended medical school at the Texas Tech University Health Sciences Center, Lubbock, Texas, and completed his residency at the University of Texas Health Science Center, Tyler, Texas. His specialty is family practice.



Jay Jackson, M.D. Jay Jackson, M.D. 

began practicing at Kimble Hospital and Junction Medical Clinic in 2018.  He completed his family practice residency at the Waco Family Medicine Residency Program, Waco, Texas, and earned his Doctorate of Medicine degree from Texas Tech University Health Sciences Center, Paul Foster School of Medicine, El Paso, Texas.  In addition to graduating with academic honors, his skill as a physician was recognized by his medical school peers and attending faculty who honored him with the Gold-Headed Cane Award as the physician they would most like to care for their own families. 

Dr. Jackson received his Bachelor of Science degree from Texas A&M University, College Station, Texas.  He is very comfortable communicating in Spanish for those patients who prefer to discuss medical concerns in their primary language.



Jennifer Johnson, PA-C Jennifer Johnson, PA-C 

rejoined the Kimble Hospital family in October 2013. She previously practiced at the Junction Medical Clinic from 2001 to 2010, working in the Peterson Regional ER Fast Track department from 2010 to 2013.  Johnson grew up in the small town of Aubrey, Texas, just north of Denton, Texas. She attended Texas A&M University, College Station, Texas, and then trained as a Physician's Assistant at the University of North Texas Health Science Center, Fort Worth, Texas. She lives in Junction with her husband, Jay, and their children.



Al Lopez, PA-C Al Lopez, PA-C 

returned to Junction Medical Clinic after retiring at the end of 2013. He began to work in Junction in April 1994 as a full-time provider of outpatient medical care, working in the clinic, covering the emergency department at Kimble Hospital and making visits to patients in the nursing home.  His medical career began in the military in 1960 where he trained as a combat medic, combat medical and surgical specialist and a Special Forces airborne medical/surgical specialist.  Lopez later graduated from the Physician Assistants Program at the University of Washington, Seattle, Washington. Originally from Comfort, Texas, and a Fredericksburg High School graduate, Lopez provided patient care services in various communities in Washington, Colorado and Texas before returning to the Hill Country.



Dyllon Sanford, PA-C Dyllon Sanford, PA-C 

received his Master of Physician Assistant Studies (MPAS) from Texas Tech University Health Sciences Center, Lubbock, Texas, and his Bachelor of Science degree in Kinesiology from Texas A&M University, College Station, Texas.  While in college, he worked as a personal trainer and orthopedic exercise specialist for a fitness center. Sanford also became certified Emergency Medical Technician, working in the emergency department at CapRock Hospital, Bryan, Texas.  In addition to his certifications in Advanced Cardiac Life Support, Pediatric Advanced Life Support and Basic Life Support, Sanford continues to maintain certification as a personal trainer and as an orthopedic exercise specialist.