Medical and health researchers

Norman Talal

Norman Talal (1934–2015) was an American physician-scientist and immunologist known for showing that Sjögren's syndrome lymphomas are monoclonal B-cell neoplasms and for a lupus DNA-binding test.

Norman Wolmark

Norman Wolmark is an American surgical oncologist who succeeded Bernard Fisher as NSABP chairman in 1994 and leads NRG Oncology, designing landmark breast and colorectal cancer trials.

Norman Zamcheck

Norman Zamcheck was an American gastroenterologist and cancer researcher at Boston City Hospital and Harvard Medical School, known for his work on the CEA tumor marker.

Nosratola D. Vaziri

Nosratola D. Vaziri is an American nephrologist at UC Irvine who led its nephrology division for 34 years and studies oxidative stress and gut microbes in kidney disease.

Nubia Muñoz (Nubia Muñoz Calero) is a Colombian epidemiologist whose international case-control studies established HPV as the necessary cause of cervical cancer, the basis for HPV vaccines and global prevention.

Nuha A. ElSayed

Nuha A. ElSayed, also known as Nuha El-Sayed, is an endocrinologist and diabetologist who is senior vice president of health care improvement at the American Diabetes Association and teaches at Harvard Medical School.

Nuno Faria

Nuno R. Faria is a Portuguese virus genomic epidemiologist at Imperial College London, known for genomic studies of HIV-1 and real-time Zika analysis in Brazil.

Núria López-Bigas

Núria López-Bigas, also written Nuria Lopez-Bigas, is a Spanish computational biologist born in 1975 who studies cancer genomics, leads the Biomedical Genomics lab at IRB Barcelona, and teaches at Pompeu Fabra University.

O. Carter Snead

O. Carter Snead is a Canadian pediatric neurologist who led neurology at the Hospital for Sick Children in Toronto and created the GHB rat model of absence epilepsy.

O. Ross McIntyre

O. Ross McIntyre (O. R. McIntyre) is an American hematologist-oncologist and Emeritus Professor of Medicine at Dartmouth, director of Norris Cotton Cancer Center from 1975 to 1992.

Octave Gengou

Octave Gengou (1875–1957) was a Belgian bacteriologist who co-discovered the whooping-cough bacillus with Jules Bordet in 1906 and developed the first pertussis vaccine in 1912.

Sep 17, 2026

Oded Abramsky

Oded Abramsky is an Israeli neurologist and neuroimmunologist at the Hebrew University of Jerusalem, known for establishing neuroimmunology as a discipline and pioneering stem cell therapy trials in multiple sclerosis and ALS.

Ola Landgren

C. Ola Landgren is a Swedish-trained hematologist-oncologist specializing in multiple myeloma who has led myeloma programs at the NCI, Memorial Sloan Kettering, and the University of Miami.

Ole A. Andreassen

Ole A. Andreassen, often cited as Ole Andreassen, is a Norwegian psychiatrist and geneticist at the University of Oslo studying the genetics of severe mental disorders.

Ole Frithjof Norheim

Ole Frithjof Norheim is a Norwegian physician and medical ethicist who is a professor at the University of Bergen and Harvard, known for his research on health inequality.

Oleh Hornykiewicz

Oleh Hornykiewicz (1926–2020) was an Austrian pharmacologist who discovered dopamine deficiency in the brains of Parkinson's disease patients and initiated L-DOPA therapy, the foundation of dopamine replacement treatment, earning the Wolf Prize in 1979.

Olga Imerslund

Olga Imerslund (1907–1987) was a Norwegian pediatrician at Rikshospitalet in Oslo whose 1960 report on ten children with hereditary selective vitamin B12 malabsorption established Imerslund–Gräsbeck syndrome.

Olive Watkins Smith

Olive Watkins Smith (1901–1983) was an American biochemist who directed the Fearing Research Laboratory in Boston and wrote the 1948 paper promoting DES in pregnancy.

Oliver A. Cornely

Oliver A. Cornely (Oliver Andreas Cornely) is a German infectious diseases physician-scientist at University Hospital Cologne who led the 2007 posaconazole prophylaxis trial and the 2019 global mucormycosis guideline.

Oliver Cope

Oliver Cope (1902–1994) was an American surgeon at Massachusetts General Hospital and Harvard Medical School, known for parathyroid surgery, burn care after Boston's 1942 Cocoanut Grove fire, and challenging radical mastectomy.

Oliver D. Schein

Oliver D. Schein is an American ophthalmologist and epidemiologist at Johns Hopkins' Wilmer Eye Institute, known for research on contact-lens infection and cataract surgery safety.

Oliver Howes

Oliver D. Howes is a British psychiatrist-scientist who heads Psychosis Studies at King's College London and is known for PET imaging of dopamine in schizophrenia.

Oliver Pybus

Oliver Pybus is a British biologist at Oxford known for founding phylodynamics, the study of pathogen evolution and ecology, and elected a Royal Society Fellow in 2022.

Oliver Sartor

Oliver Sartor, also known as A. Oliver Sartor, is an American medical oncologist known for leading phase 3 trials of radium-223 and lutetium-177 prostate cancer therapies.

Oliver Smithies

Oliver Smithies (1925–2017) was a British-born American geneticist and biochemist who invented gene targeting in mice and shared the 2007 Nobel Prize in Physiology or Medicine.

Oliver W. Press

Oliver W. Press was an American lymphoma physician-scientist at the Fred Hutchinson Cancer Research Center in Seattle who pioneered antibody and CAR T-cell treatments and died in 2017.

Oliver Wrong

Oliver Murray Wrong (1925–2012) was a British nephrologist and professor of medicine at University College Hospital, London, remembered for his 1959 ammonium chloride test for renal tubular acidosis and for defining Dent's disease.

Olivia Affuso

Olivia Affuso is an American physical activity epidemiologist who studies preventing obesity and chronic disease through physical activity, and a Fellow of the American College of Sports Medicine.

Olivia Pagani

Olivia Pagani is a Swiss-Italian medical oncologist specializing in breast cancer, best known for leading the TEXT and SOFT trials of ovarian suppression and the POSITIVE trial allowing pregnancy after breast cancer.