About Us

Dr. Brian Terry Miller founded the practice in 1987.  He received his Bachelor of Arts in 1971from Vanderbilt University in Nashville, TN. He then received his D.O. in 1979 from Texas College of Osteopathic Medicine in Fort Worth. He served in the United States Army Medical Corps from 1979-1987. During this time, he completed his residency in Internal Medicine at William Beaumont Army Medical Center and his fellowship in Allergy/Immunology at Fitzsimons Army Medical Center. Dr. Miller is certified by the American Board of Internal Medicine and American Board of Allergy & Immunology. Dr. Miller is a proud husband to wife, Linda, and father to his three children, Erin, Carrie, and Brian. During Dr. Miller’s free time, he enjoys barbequing with his family, watching old western movies, crossword puzzles, hunting, and fishing.


Dr. Uday K. Reddy joined our team in 2007.  He graduated Cum Laude from Duke University with a Bachelors of Science in Biology in 1994. He continued his education at the University of Alabama at Birmingham School of Medicine where he graduated in 1998 with his M.D.  He went forward to complete a residency in Internal Medicine at the Medical College of Pennsylvania (now Drexel University), and then went on to complete a combined Pediatric and Adult fellowship in Allergy and Immunology at Long Island Jewish-Northshore Medical Center of Albert Einstein College of Medicine in 2003.  Dr. Reddy received Board Certification in Internal Medicine in 2001, and in Allergy and Immunology in 2003.  In his free time, Dr. Reddy enjoys gardening, biking, and hiking Austin’s greenbelts with his wife, Manju, a dedicated high school teacher, and his children.


Dr. Anthony R. Henry joined our team in 2008. He received his M.D. from Baylor College of Medicine (1977).  While serving in the U.S. Army from 1977-1992, he completed a residency in Internal Medicine at William Beaumont Army Medical Center, El Paso and fellowship in Allergy/Immunology at Fitzsimons Army Medical Center, Denver.  Dr. Henry served as Assistant Chief of Medicine and Director, Internal Medicine residency training program at William Beaumont AMC and Allergy/ Immunology Fellowship Staff Physician at Fitzsimons AMC.  Dr. Henry is board certified in Internal Medicine, Nephrology, and Allergy/Immunology.  He and his wife, Marie, have been married 37 years and have a son, daughter-in-law, and two grandchildren. In his free time, he enjoys family, reading, and the outdoors.


Jentry Riddle, PA-C is a graduate of The University of the Sciences in Philadelphia.  She earned her Master of Science degree in Physician Assistant Studies at the Philadelphia College of Osteopathic Medicine.   She is Board Certified by the National Commission on Certification of Physician Assistants and affiliated with the American Academy of Physician Assistants.

Before relocating to Killeen, Mrs. Riddle worked in Philadelphia, Pennsylvania as a Physician Assistant at Penn Presbyterian Medical Center.   In addition to caring for patients, she also has been involved with medical research and a medical missions project in Honduras.  Mrs. Riddle is currently seeing patients in the Killeen Clinic Monday through Thursday.

Mrs. Riddle married her Graduate School sweetheart Mark and is a proud wife of a military officer.


Erica Han, PA-C joined our team in 2011. She is a 2007 graduate of the University of Massachusetts Amherst and its distinguished Commonwealth College.

After volunteering as a nurse assistant in a hospital in Ho Chi Minh City, Vietnam, she became passionate in pursuing a career in medicine. She graduated with her masters in physician assistant studies from the Massachusetts College of Pharmacy and Health Sciences in 2010. In her free time she loves crafts, travel, dance and spending time with friends and family.


allergycentex-melanie-mcKinley2Melanie McKinley PA-C, AE-C joined our staff December 2013 at the Georgetown and Round Rock locations. She is a graduate of the University of Texas Medical Branch at Galveston, Physician Assistant Bachelor Degree Program 1994 and added her Master’s Degree from UTMB in 2013. Mrs. McKinley is also a Certified Asthma Educator (AE-C) as of June 2014. She is a former US Public Health Service Officer 1993-1996 and thereafter worked in Family Practice and Emergency Medicine in Austin, Georgetown, and as a civilian for the US Army at Ft Hood.

Mrs. McKinley traveled to Kuwait and Iraq for two tours of duty to assist the US Army as a civilian Physician Assistant in 2004 and 2007. She also worked at the CRDAMC Emergency Department at Fort Hood, Texas 2009-2013. She is a lifelong Texas resident who grew up in Austin and continues to enjoy strong family ties to the area. She enjoys family activities with her husband, adult children and grandchildren; and in her spare time enjoys gardening, hiking, exercise, cooking, local music, and following her favorite Texas Longhorns.


lauraLauren Upton, PA-C, joined our team in 2013. She is a graduate of the University of North Carolina at Chapel Hill (go Heels!) with a Bachelor of Science in Chemistry in 2005. She earned her Master’s of Physician Assistant Studies from the University of Texas Southwestern Medical Center in 2009.

After graduating from UTSW, Lauren spent three years in the Dominican Republic working with Makarios as their Medical Administrator for a school of local children. She moved back to her hometown of Austin in 2013 with her husband Andy. In her free time, Lauren enjoys reading, being with her family, and motorcycle riding with her husband.