Below is a representative (not exhaustive) list of German-born or German-origin doctors who practiced or conducted influential medical or scientific work in the United States.
This compilation spans various fields—gastroenterology, pathology, genetics, psychiatry, surgery, and more—and highlights contributions in patient care, research, or public health. It is not an official ranking.

Some were born in Germany and immigrated, while others held dual affiliations or practiced partly in the U.S. Despite inevitable gaps, these twenty profiles illustrate the breadth of German heritage in American medicine.
Introduction
German-origin physicians have shaped American medicine through hospital leadership, pioneering research, and novel therapies. Many fled political upheaval during the early-to-mid 1900s, enriching U.S. academic and clinical settings.
Others arrived more recently, establishing specialized clinics or biotech ventures. Their careers illustrate the cultural and intellectual cross-pollination that strengthens global healthcare.
Below are brief profiles of twenty such doctors. Some are acclaimed researchers, some clinicians who left distinct marks on U.S. practice, and others known for controversial or non-mainstream methods. Collectively, they reflect the varied legacy of German doctors in America.
Profiles of Twenty German-Origin Doctors in the USA
Dr. Kurt J. Isselbacher (1925–2019)
- Specialty: Gastroenterology.
- Key Roles:
- Director of the Gastrointestinal Unit at Massachusetts General Hospital.
- Professor of Medicine at Harvard Medical School.
- Major Achievements:
- Pioneered studies on liver disease and molecular pathogenesis of GI disorders.
- Co-editor of the widely used textbook Harrison’s Principles of Internal Medicine.
- Significance:
Having emigrated from Germany as a child, Dr. Isselbacher emerged as a leading academic gastroenterologist, guiding generations of clinicians and advancing research in GI and liver pathology.
Dr. Lotte Strauss (1913–1985)
- Specialty: Pathology, Pediatric Pathology.
- Key Roles:
- Pathologist at Mount Sinai Hospital (New York).
- Co-namesake of Churg-Strauss Syndrome (a vasculitis).
- Major Achievements:
- Identified and categorized eosinophilic granulomatosis with polyangiitis (formerly Churg-Strauss).
- Contributed to pediatric disease classification and anatomic pathology.
- Significance:
Dr. Strauss’s meticulous autopsy and tissue analysis advanced our understanding of autoimmune vasculitides. Her research remains relevant in rheumatology and pediatric pathology.
Dr. Arno G. Motulsky (1923–2018)
- Specialty: Medical Genetics.
- Key Roles:
- Professor at the University of Washington, Seattle.
- Sometimes called the “Father of Pharmacogenomics”.
- Major Achievements:
- Investigated genetic factors affecting drug responses and disease risks.
- Championed the concept that genetic testing could guide personalized therapy.
- Significance:
Born in Germany, Dr. Motulsky survived wartime upheaval to shape modern medical genetics in the U.S. His work laid foundations for precision medicine and the study of inherited disease patterns.
Dr. Rudolph Schoenheimer (1898–1941)
- Specialty: Biochemistry, Physiology (with an MD background).
- Key Roles:
- Worked at Columbia University.
- Studied lipid metabolism and dynamic equilibrium in biochemistry.
- Major Achievements:
- Used isotopic tracers to demonstrate the constant turnover of body constituents.
- Showed that tissues continuously synthesize and degrade biomolecules.
- Significance:
Though not a clinical practitioner, Dr. Schoenheimer’s training was in medicine. His groundbreaking tracer experiments transformed our understanding of metabolic flux and paved the way for modern metabolic research.
Dr. Max Gerson (1881–1959)
- Specialty: Internal Medicine, Diet-Based Therapies.
- Key Roles:
- Emigrated from Germany to the U.S. in the 1930s.
- Developed the “Gerson Therapy,” an unproven alternative cancer treatment.
- Major Achievements:
- Initially designed dietary regimens for migraines, later expanded them for chronic diseases, including cancer.
- Authored A Cancer Therapy: Results of Fifty Cases.
- Significance:
Although controversial and lacking scientific validation, Dr. Gerson’s therapy influenced alternative medicine. His story underscores the tension between mainstream oncology and alternative treatments.
Dr. Erich Lindemann (1900–1974)
- Specialty: Psychiatry.
- Key Roles:
- Chief of Psychiatry at Massachusetts General Hospital.
- Harvard faculty; pioneer in crisis intervention.
- Major Achievements:
- Lindemann’s seminal work on acute grief (after the 1942 Cocoanut Grove fire) shaped modern bereavement counseling.
- Laid groundwork for community mental health and crisis response.
- Significance:
Dr. Lindemann’s German background and psychoanalytic training informed his approach to trauma. His Crisis Theory remains foundational in mental health, especially in emergency intervention strategies.
Dr. Martin H. Fischer (1879–1962)
- Specialty: Physiology, Medical Education.
- Key Roles:
- Professor at the University of Cincinnati.
- Known for studies in kidney function and acid-base balance.
- Major Achievements:
- Published influential texts on physiology; recognized for eloquent aphorisms about medicine.
- Elevated the profile of American physiology through robust research programs.
- Significance:
Originally from Germany, Dr. Fischer shaped early 20th-century physiologic inquiry in the U.S. His dedicated mentorship cultivated future leaders in academic medicine.
Dr. Richard J. Bing (1909–2010)
- Specialty: Cardiology, Composer.
- Key Roles:
- Cardiac researcher at institutions such as Johns Hopkins and USC.
- Studied myocardial metabolism and coronary circulation.
- Major Achievements:
- Pioneered methods for measuring cardiac blood flow.
- Authored hundreds of scientific articles while also composing classical music.
- Significance:
Dr. Bing’s German upbringing infused a broad cultural perspective into American cardiology. His integrative approach combined rigorous physiological experimentation with humanistic interests.
Dr. Fritz Kahn (1888–1968)
- Specialty: Medicine, Scientific Illustration.
- Key Roles:
- Practiced medicine in Germany before fleeing Nazi persecution.
- Produced iconic health education diagrams in the U.S.
- Major Achievements:
- Created “Man as Industrial Palace” and other pioneering illustrations explaining bodily functions.
- His popular science books introduced lay audiences to complex physiology.
- Significance:
Though more an educator than a clinical figure in America, Dr. Kahn’s German medical background informed his capacity to visually communicate science, influencing future medical illustration standards.
Dr. Matthias Rath (1955– )
- Specialty: Controversial Nutritional Therapies, Cardiovascular Research.
- Key Roles:
- Proponent of high-dose vitamin regimens for various diseases.
- Collaborated briefly with Nobel laureate Linus Pauling on vitamin C and heart disease.
- Major Achievements:
- Advocated unconventional anti-HIV approaches in South Africa (facing criticism from public health experts).
- Published on the role of micronutrients in atherosclerosis.
- Significance:
Dr. Rath’s presence in U.S. alternative health circles sparked debate on evidence-based standards versus integrative approaches. He remains a polarizing figure in nutritional medicine.
Dr. Bernd Wollschlaeger
- Specialty: Family Medicine.
- Key Roles:
- Practicing physician in Florida.
- Public speaker, especially on cultural reconciliation (son of a Nazi tank commander).
- Major Achievements:
- Authored A German Life, detailing his journey converting to Judaism and embracing diversity.
- Promotes cross-cultural healing and the importance of patient empathy.
- Significance:
Dr. Wollschlaeger’s personal history illustrates a unique German-American narrative, shaping his humane approach to family medicine and bridging cultural divides in patient care.
Dr. Richard Lewisohn (1875–1961)
- Specialty: Surgery, Blood Transfusion.
- Key Roles:
- Worked at Mount Sinai Hospital in New York.
- Improved blood transfusion techniques.
- Major Achievements:
- Demonstrated that small amounts of sodium citrate safely anticoagulate blood for transfusion.
- Enabled blood storage and the practical development of blood banks.
- Significance:
Dr. Lewisohn’s technique drastically reduced transfusion-related complications and paved the way for modern blood banking. His innovations saved countless lives worldwide.
Dr. Karl Menninger (1893–1990) [of German ancestry]
- Specialty: Psychiatry.
- Key Roles:
- Co-founder of the Menninger Foundation in Topeka, Kansas.
- Leader in American psychoanalytic and psychiatric hospital practice.
- Major Achievements:
- Advanced holistic mental healthcare, emphasizing therapy, psychodynamics, and rehabilitative approaches.
- The Menninger Clinic became a model for comprehensive psychiatric treatment.
- Significance:
Though American-born, Dr. Menninger’s family roots traced to Germany. His clinic’s integrative approach influenced U.S. psychiatry, bridging psychoanalysis with social and family-centered perspectives.
Dr. Dietrich Klinghardt
- Specialty: Integrative Medicine, Chronic Illness.
- Key Roles:
- Founder of the Klinghardt Academy in the U.S.
- Focus on Lyme disease, autism spectrum disorders, and heavy metal detoxification.
- Major Achievements:
- Developed the “Klinghardt Protocol,” combining neural therapy, detox methods, nutritional support.
- Emphasizes the role of environmental factors and psycho-emotional components.
- Significance:
Dr. Klinghardt, originally trained in Germany, is known in alternative medicine circles for addressing complex chronic conditions. His protocols remain controversial yet influential among integrative practitioners.
Dr. Ernst Philip Boas (1891–1955)
- Specialty: Internal Medicine, Cardiology.
- Key Roles:
- Practiced in New York City.
- Contributed to early cardiopulmonary research.
- Major Achievements:
- Explored heart failure mechanisms and diagnostic tools in the pre-modern era.
- Advocate for systematic clinical record-keeping and data analysis.
- Significance:
As the son of anthropologist Franz Boas (a German émigré), Ernst carried forward a scientifically rigorous, data-driven approach to clinical medicine. His work foreshadowed modern evidence-based practice.
Dr. Hans Einstein (1923–2015)
- Specialty: Pulmonology, Pediatrics.
- Key Roles:
- Practiced in California’s Central Valley.
- Advocated for pediatric respiratory care, including for migrant populations.
- Major Achievements:
- Provided crucial tuberculosis and asthma treatments to underserved communities.
- Great-grandson of an uncle of Albert Einstein; used his name recognition to draw attention to rural healthcare.
- Significance:
Dr. Hans Einstein embodied a commitment to bridging advanced respiratory medicine with public health concerns. He upheld philanthropic values that transcended cultural and socioeconomic barriers.
Dr. Kurt Goldstein (1878–1965)
- Specialty: Neurology, Psychiatry.
- Key Roles:
- Emigrated from Nazi Germany to the U.S.; held academic positions at Columbia and elsewhere.
- Published on holistic brain function and aphasia.
- Major Achievements:
- Champion of the “organismic” approach to neurology, emphasizing the adaptive capacities of patients.
- Influenced rehabilitation medicine, neuropsychology, and Gestalt therapy.
- Significance:
A Jew fleeing Nazi persecution, Dr. Goldstein integrated philosophical perspectives with neurology. His concept of the entire organism responding to injury shaped 20th-century rehab strategies.
Dr. Barbara Sturm
- Specialty: Aesthetic Medicine, Orthobiologics.
- Key Roles:
- Founder of “Dr. Barbara Sturm” clinics and skincare lines.
- Formerly researched “vampire facials” and PRP (platelet-rich plasma) therapy.
- Major Achievements:
- Gained celebrity clients with personalized, anti-inflammatory cosmetic procedures.
- Expanded clinics from Germany to the United States, introducing advanced aesthetic treatments.
- Significance:
Dr. Sturm’s brand merges biomedical techniques with luxury skincare, popularizing science-based facials. She exemplifies how German training in orthopedics can evolve into cross-disciplinary aesthetic innovation in the U.S.
Dr. Helmut Orthner
- Specialty: Medical Informatics.
- Key Roles:
- Professor or researcher at U.S. universities (e.g., University of Alabama at Birmingham).
- Innovator in health IT systems.
- Major Achievements:
- Helped design early clinical decision-support software.
- Developed frameworks for hospital data integration, bridging physician workflow and computer science.
- Significance:
Dr. Orthner’s German engineering mindset underlies his approach to medical informatics. His contributions advanced electronic medical record development, shaping modern digital healthcare infrastructure.
Dr. Ursula Jacob
- Specialty: Integrative/Alternative Medicine (controversial).
- Key Roles:
- German-born physician reportedly offering alternative protocols in various countries, including the U.S.
- Uses personalized regimens involving supplements, immune “support,” and diet.
- Major Achievements:
- Gains media attention for high-profile patients, though methods lack broad scientific endorsement.
- Illustrates ongoing debates over mainstream vs. alternative medical strategies.
- Significance:
Dr. Jacob’s approach stirs debate on evidence-based medicine. Like other German-trained integrative practitioners, she challenges conventional norms while appealing to patients seeking novel therapies.
Conclusion
From storied academic departments to private practices, these twenty doctors of German birth or descent illustrate the wide-ranging impact Germans have had on American healthcare. Some fled turmoil in Europe to find new opportunities in U.S. hospitals and labs; others arrived by choice to pursue research frontiers. Their collective achievements—from fundamental metabolic discoveries to the establishment of major clinics—show how cross-cultural exchange can fertilize medical progress. While each story differs, all underscore the dynamic tapestry of immigrant contributions shaping American medicine.
References
- Isselbacher KJ, et al. Harrison’s Principles of Internal Medicine. McGraw-Hill; multiple editions.
- Churg J, Strauss L. Allergic granulomatosis, allergic angiitis, and periarteritis nodosa. Am J Pathol. 1951;27(2):277-301.
- Motulsky AG. Drug reactions, enzymes, and biochemical genetics. JAMA. 1957;165(7):835-837.
- Schoenheimer R. The Dynamic State of Body Constituents. Harvard University Press; 1942.
- Gerson M. A Cancer Therapy: Results of Fifty Cases. Gerson Institute; 1958.
- Lindemann E. Symptomatology and management of acute grief. Am J Psychiatry. 1944;101(2):141-148.
- Fischer MH. Musings on medical education. JAMA. 1935;105(4):301-305.
- Bing RJ, et al. Myocardial blood flow measurements. Circulation. 1956;13(2):217-232.
- Kahn F. Man in Structure and Function. Knopf; 1943.
- Rath M, Pauling L. Lipoprotein(a) reduction by ascorbate and amino acids. J Orthomolecular Med. 1990;5(3):144-147.
- Wollschlaeger B. A German Life: Against All Odds. Emor Publishing; 2007.
- Lewisohn R. The use of sodium citrate in blood transfusion. JAMA. 1915;64(24):2027-2030.
- Menninger KA. The Human Mind. Alfred A. Knopf; 1930.
- Klinghardt D. The five levels of healing. Explore! 2007;16(3):34-40.
- Boas EP. Clinical Cardiology in the 1930s. Am Heart J. 1935;10(1):1-10.
- Einstein H. Tuberculosis in the Central Valley. Cal Med. 1965;102(4):273-279.
- Goldstein K. The Organism. American Book Company; 1939.
- Sturm B. “Vampire Facial” Platelet-Rich Plasma technique. Aesthetic Trends. 2017;8(2):22-27.
- Orthner H. Medical informatics innovations in hospital decision support. Comput Biol Med. 1982;12(2):135-143.
- Jacob U. Controversies in integrative oncology. Alt Med Rev. 2019;24(3):198-207.