About
Allen Sonstein, MD, brings more than four decades of internal medicine experience to the Be Well MD team. He opened his internal medicine practice in Austin in 1978 and practiced there for 42 years. He is board certified in internal medicine and holds a strong focus on geriatric care.
Dr. Sonstein grew up on the East Coast and moved to Texas specifically to practice in Waelder, a medically underserved community. He has served on the faculty of the University of Texas Medical Branch at Galveston and currently serves on the volunteer faculty at Dell Medical School, where he spends time at the student-run clinic for people experiencing homelessness. He has also traveled on numerous medical mission trips to Central America. Dr. Sonstein is passionate about helping older adults maintain healthy lifestyles and navigate the aging process with confidence.
Education & Training
Additional Training
Faculty, University of Texas Medical Branch at Galveston; Volunteer Faculty, Dell Medical School
Certifications
Conditions Treated
Who is Dr. Sonstein right for?
Dr. Sonstein is a strong fit for older adults who want a physician with deep, long-standing roots in internal medicine. Patients managing hypertension, diabetes, arthritis, or coronary heart disease benefit from his 40-plus years of experience. His commitment to underserved communities reflects a patient-first approach that resonates with adults seeking a doctor who listens carefully. Those who value a physician actively engaged in medical education and community service will find Dr. Sonstein a natural match.
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Frequently Asked Questions
Dr. Sonstein specializes in internal medicine with a strong focus on caring for older adults. He treats chronic conditions including hypertension, diabetes, arthritis, and coronary heart disease. He is passionate about helping patients maintain healthy lifestyles as they age.
Yes. Dr. Sonstein holds board certification in internal medicine. He has practiced internal medicine for over 40 years, opening his Austin practice in 1978.
Dr. Sonstein trained in internal medicine and has served on the faculty of the University of Texas Medical Branch at Galveston. He currently serves on the volunteer faculty at Dell Medical School in Austin.
Dr. Sonstein opened his internal medicine practice in Austin in 1978 and practiced there for 42 years. He brings that deep experience to his work at Be Well MD caring for older adults.
Yes. Dr. Sonstein volunteers at the student-run clinic for people experiencing homelessness at Dell Medical School. He has also completed many medical mission trips to Central America. Community-centered care has been a consistent thread throughout his career.
Dr. Sonstein focuses on helping adults maintain healthy lifestyles, manage chronic conditions, and move through the aging process with support. His decades of clinical experience give him a practical, relationship-driven perspective on elder care.
Doctor profile last updated June 6, 2026