John Grammatikakis

18 total papers · 1.3k total citations
17 papers, 895 citations indexed

About

John Grammatikakis is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, John Grammatikakis has authored 17 papers receiving a total of 895 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Surgery, 5 papers in Pulmonary and Respiratory Medicine and 4 papers in Oncology. Recurrent topics in John Grammatikakis’s work include Gastrointestinal disorders and treatments (5 papers), Inflammatory Bowel Disease (4 papers) and Diverticular Disease and Complications (3 papers). John Grammatikakis is often cited by papers focused on Gastrointestinal disorders and treatments (5 papers), Inflammatory Bowel Disease (4 papers) and Diverticular Disease and Complications (3 papers). John Grammatikakis collaborates with scholars based in Greece and Germany. John Grammatikakis's co-authors include Nicholas Gourtsoyiannis, Nickolas Papanikolaou, Panos Prassopoulos, Thomas G. Maris, Panagiotis Prassopoulos, Maria Roussomoustakaki, Manousos Christodoulakis, Eelco de Bree, D.D. Tsiftsis and Kostas Perisinakis and has published in prestigious journals such as The American Journal of Gastroenterology, Radiographics and European Radiology.

In The Last Decade

Co-authorship network of co-authors of John Grammatikakis

This figure shows the co-authorship network connecting the top 25 collaborators of John Grammatikakis. A scholar is included among the top collaborators of John Grammatikakis based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with John Grammatikakis. John Grammatikakis is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

John Grammatikakis

17 papers receiving 873 citations

Fields of papers citing papers by John Grammatikakis

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John Grammatikakis. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John Grammatikakis. The network helps show where John Grammatikakis may publish in the future.

Countries citing papers authored by John Grammatikakis

Since Specialization
Citations

This map shows the geographic impact of John Grammatikakis's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John Grammatikakis with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John Grammatikakis more than expected).

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar’s output or impact.

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2026