About
Bradley Kayser, MD, graduated Phi Beta Kappa and magna cum laude from The University of Texas at Austin in 1977 before earning his medical degree from Tulane University School of Medicine in 1981. He completed three years of Internal Medicine residency at The University of Texas Health Science Center in San Antonio, then served an additional year as Chief Resident in Medicine. Dr. Kayser went on to serve as an Assistant Professor of Medicine at UT Health Science Center in Dallas before returning to San Antonio to enter private practice. He founded Pasteur Medical Associates in 1993 and holds board certification in Internal Medicine.
Dr. Kayser is a Fellow of the American College of Physicians and holds an appointment as Adjunct Associate Professor at UT Health Science Center at San Antonio. He believes deeply in comprehensive care as the foundation of good medicine. 7 FM at Trinity University since 1984, co-hosting "Riffs" on Tuesday evenings. He has also co-produced free public jazz concerts with his collaborator Chuck Parrish for more than two decades.
Education & Training
Undergraduate
The University of Texas at Austin, graduated Phi Beta Kappa and magna cum laude, 1977
Medical School
Tulane University School of Medicine, 1981
Residency
Internal Medicine, The University of Texas Health Science Center in San Antonio; Chief Resident in Medicine for 1 year
Additional Training
Assistant Professor of Medicine at UT Health Science Center in Dallas; Adjunct Associate Professor at UT Health Science Center at San Antonio
Certifications
Who is Dr. Kayser right for?
Dr. Kayser suits adults seeking experienced, relationship-driven internal medicine care. Patients managing complex or chronic conditions benefit from his comprehensive approach. His long tenure in San Antonio and deep community ties make him a strong fit for patients who value continuity with a seasoned physician. Adults who want direct access to a board-certified internist will find his practice style well-matched to their needs.
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Frequently Asked Questions
Dr. Kayser graduated magna cum laude from The University of Texas at Austin and earned his medical degree from Tulane University School of Medicine in 1981. He completed his Internal Medicine residency at UT Health Science Center in San Antonio and served as Chief Resident. He also held a faculty position as Assistant Professor of Medicine at UT Health Science Center in Dallas.
Yes, Dr. Kayser holds board certification in Internal Medicine. He is also a Fellow of the American College of Physicians, a distinction recognizing achievements beyond standard clinical practice.
Yes. Dr. Kayser serves as an Adjunct Associate Professor at UT Health Science Center at San Antonio. He has maintained a connection to academic medicine throughout his career.
Dr. Kayser founded Pasteur Medical Associates in 1993. He has practiced internal medicine in San Antonio for more than 30 years, making him one of the longest-tenured physicians at the practice.
Dr. Kayser believes in comprehensive care, meaning he works to understand and manage each patient's full health picture. He coordinates with specialists when needed and maintains direct relationships with his patients.
Yes. At Pasteur Medical Associates, every visit is with a board-certified physician. Dr. Kayser sees his own patients directly at every appointment.
Doctor profile last updated June 11, 2026