John R. (J.R.) Ernst, DMSc, PA-C
Physician Assistant located in Georgetown, TX & Killeen, TX
John R. (J.R.) Ernst, DMSc, PA-C
PA John R. “J.R.” Ernst is a nationally certified Physician Associate and Clinic Administrator at the Allergy & Asthma Clinic of Central Texas. With more than 30 years of medical experience and a 26-year U.S. Army career, he brings precision, compassion, and leadership to every patient encounter.
J.R. earned his Doctor of Medical Science degree from the University of Lynchburg and his Master of Physician Associate Studies from the University of Nebraska Medical Center. His clinical background spans primary care, emergency medicine, and allergy and immunology, where he focuses on personalized, evidence-based care for patients with allergies and asthma.
At the clinic, J.R. leads operations, staff development, and quality-of-care initiatives that improve efficiency and patient outcomes. Beyond medicine, he is a veteran entrepreneur and mentor who believes in serving with integrity, building with purpose, and leading by example.
Outside the clinic, J.R. enjoys restoring classic cars, traveling, and spending time with his two sons—teaching them hard work, discipline, and servant leadership.
PA John R. “J.R.” Ernst is a nationally certified Physician Associate and Clinic Administrator at the Allergy & Asthma Clinic of Central Texas. With more than 30 years of medical experience and a 26-year U.S. Army career, he brings precision, compassion, and leadership to every patient encounter.
J.R. earned his Doctor of Medical Science degree from the University of Lynchburg and his Master of Physician Associate Studies from the University of Nebraska Medical Center. His clinical background spans primary care, emergency medicine, and allergy and immunology, where he focuses on personalized, evidence-based care for patients with allergies and asthma.
At the clinic, J.R. leads operations, staff development, and quality-of-care initiatives that improve efficiency and patient outcomes. Beyond medicine, he is a veteran entrepreneur and mentor who believes in serving with integrity, building with purpose, and leading by example.
Outside the clinic, J.R. enjoys restoring classic cars, traveling, and spending time with his two sons—teaching them hard work, discipline, and servant leadership.