Dr. Barbara JostMD
Internal Medicine
at Barbara Jost, MD - Concierge Internal Medicine — St. Louis, MO
About
Barbara Jost, MD brings an unusually broad scientific foundation to her St. Louis internal medicine practice. Before entering medicine, she studied biomedical engineering at Northwestern University and spent seven years developing cardiology software and computational epidemiological models for the pharmaceutical industry. She then earned her MD from St. Louis University School of Medicine in 1998, graduating summa cum laude.
Dr. Jost completed both her Internal Medicine residency and her Allergy and Immunology fellowship at Washington University School of Medicine, finishing in 2004. During her fellowship, she served as chief editor and contributing author of The Washington Manual: Allergy, Asthma, and Immunology Subspecialty Consult. She holds board certification from the American Board of Internal Medicine and maintains membership in the American Academy of Allergy, Asthma and Immunology, the American College of Physicians, and Alpha Omega Alpha Medical Honor Society. She has published research on penicillin allergy and Alzheimer's disease. Dr. Jost currently serves as a Principal Investigator at the Clinical Research Center, focusing on novel medicines in pulmonology, allergy, and vaccines. She has volunteered as a proctor for Maryville University's Nurse Practitioner program, spoken in Rockwood School District's Partners in Education, and served as a short-term medical missionary. Outside the office, she hikes with her dog, travels, and enjoys cooking. St. Louis Magazine has listed her as a Best Doctor every year she has appeared in its rankings.
Education & Training
Undergraduate
Northwestern University (Biomedical Engineering)
Medical School
St. Louis University School of Medicine (graduated summa cum laude, 1998)
Residency
Internal Medicine, Washington University School of Medicine
Fellowship
Allergy and Immunology, Washington University School of Medicine (completed 2004)
Additional Training
University of Missouri; 7-year career as biomedical engineer prior to medical school
Certifications
Conditions Treated
Who is Dr. Jost right for?
Dr. Jost is a strong fit for adults who want a primary care physician with deep specialty expertise. Patients managing chronic conditions like diabetes, high blood pressure, heart disease, or lung disease benefit from her thorough, prevention-focused approach. She also serves patients dealing with allergies, asthma, sinus infections, and immunology concerns. Adults who value a physician available around the clock and who want extended visit time will find her practice well-suited to their needs.
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Frequently Asked Questions
Dr. Jost treats a wide range of adult conditions. These include diabetes, high blood pressure, high cholesterol, heart disease, lung disease, sleep disorders, joint conditions, and respiratory illnesses. She also manages allergy, asthma, sinus infections, immunology disorders, and has published research on penicillin allergy.
Yes. Dr. Jost holds board certification from the American Board of Internal Medicine. She completed her residency in Internal Medicine and her fellowship in Allergy and Immunology at Washington University School of Medicine.
Dr. Jost spent seven years as a biomedical engineer before entering medicine. She developed cardiology software and epidemiological models for the pharmaceutical industry. She then earned her MD from St. Louis University School of Medicine, graduating summa cum laude in 1998.
Yes. Dr. Jost completed a fellowship in Allergy and Immunology at Washington University School of Medicine. She has practiced both Internal Medicine and Allergy and Immunology throughout her 20-year career. She also serves as a Principal Investigator at the Clinical Research Center, advancing novel medicines in pulmonology, allergy, and vaccines.
Dr. Jost served as chief editor and contributing author of The Washington Manual: Allergy, Asthma, and Immunology Subspecialty Consult during her fellowship. She has also published articles on penicillin allergy and Alzheimer's disease. Currently, she works as a Principal Investigator studying new medicines in pulmonology, allergy, and vaccines.
Dr. Jost has been in private practice for 20 years, practicing Internal Medicine and Allergy and Immunology throughout that time. St. Louis Magazine has recognized her annually as one of the area's finest physicians during her years in practice.
Dr. Jost holds membership in the American Academy of Allergy, Asthma and Immunology, the American College of Physicians, and Alpha Omega Alpha Medical Honor Society. She also holds board certification from the American Board of Internal Medicine.
Yes. Dr. Jost treats lung disease and respiratory illnesses as part of her clinical scope. She also serves as a Principal Investigator at the Clinical Research Center, where her work includes novel medicines in pulmonology.
Doctor profile last updated March 26, 2026