James Tonascia

10.4k total citations · 1 hit paper
81 papers, 5.9k citations indexed

About

James Tonascia is a scholar working on Gastroenterology, Physiology and Epidemiology. According to data from OpenAlex, James Tonascia has authored 81 papers receiving a total of 5.9k indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Gastroenterology, 26 papers in Physiology and 20 papers in Epidemiology. Recurrent topics in James Tonascia's work include Gastrointestinal motility and disorders (31 papers), Diet and metabolism studies (20 papers) and Liver Disease Diagnosis and Treatment (17 papers). James Tonascia is often cited by papers focused on Gastrointestinal motility and disorders (31 papers), Diet and metabolism studies (20 papers) and Liver Disease Diagnosis and Treatment (17 papers). James Tonascia collaborates with scholars based in United States, United Kingdom and Belgium. James Tonascia's co-authors include Mark L. Van Natta, Aynur Ünalp, David E. Kleiner, Kris V. Kowdley, Arun J. Sanyal, Joel E. Lavine, Naga Chalasani, Brent A. Neuschwander‐Tetri, Elizabeth M. Brunt and Anna Mae Diehl and has published in prestigious journals such as New England Journal of Medicine, JAMA and Nature Medicine.

In The Last Decade

James Tonascia

78 papers receiving 5.7k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Pioglitazone, Vitamin E, or Placebo for Nonalcoholic Steatohepatitis

2010 2.5k citations Arun J. Sanyal, Naga Chalasani et al. New England Journal of Medicine profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
James Tonascia United States	31	3.6k	1.8k	1.4k	1.2k	847	81	5.9k
Constance E. Ruhl United States	34	2.9k 0.8×	998 0.6×	1.2k 0.8×	622 0.5×	2.0k 2.4×	52	5.7k
Abdel Aziz Shaheen Canada	35	3.3k 0.9×	694 0.4×	2.2k 1.6×	535 0.5×	1.6k 1.9×	114	5.6k
Kathleen E. Corey United States	44	4.8k 1.3×	1.9k 1.1×	2.5k 1.8×	857 0.7×	1.3k 1.6×	167	7.0k
Davor Štimac Croatia	36	2.2k 0.6×	594 0.3×	1.0k 0.7×	448 0.4×	1.6k 1.9×	201	4.6k
Karn Wijarnpreecha United States	38	2.0k 0.5×	570 0.3×	1.0k 0.7×	559 0.5×	972 1.1×	250	4.0k
Ajay Duseja India	38	4.8k 1.3×	1.1k 0.6×	3.6k 2.6×	600 0.5×	1.4k 1.7×	328	6.4k
Matthew J. Armstrong United Kingdom	39	4.1k 1.1×	2.5k 1.4×	1.8k 1.3×	998 0.9×	1.4k 1.7×	130	6.2k
Shahin Merat Iran	39	1.9k 0.5×	567 0.3×	1.1k 0.8×	526 0.4×	1.6k 1.8×	172	4.9k
Masahide Hamaguchi Japan	41	4.0k 1.1×	2.7k 1.5×	1.2k 0.9×	1.8k 1.5×	879 1.0×	280	8.1k
Sylvie Naveau France	43	5.0k 1.4×	1.3k 0.7×	3.0k 2.2×	473 0.4×	1.0k 1.2×	157	7.0k

Countries citing papers authored by James Tonascia

Since Specialization

Citations

This map shows the geographic impact of James Tonascia'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 James Tonascia with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites James Tonascia more than expected).

Fields of papers citing papers by James Tonascia

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by James Tonascia. 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 James Tonascia. The network helps show where James Tonascia may publish in the future.

Co-authorship network of co-authors of James Tonascia

This figure shows the co-authorship network connecting the top 25 collaborators of James Tonascia. A scholar is included among the top collaborators of James Tonascia 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 James Tonascia. James Tonascia is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Parkman, Henry P., Richard W. McCallum, Irene Sarosiek, et al.. (2025). Characterization of Patients With Symptoms of Gastroparesis Having Frequent Emergency Department Visits and Hospitalizations. Clinical Gastroenterology and Hepatology. 23(11). 2023–2038.

Le, Phuc, Moosa Tatar, Michael B. Rothberg, et al.. (2025). Association of Components of Metabolic Syndrome and the Progression of Nonalcoholic Fatty Liver Disease. The American Journal of Gastroenterology. 121(1). 159–170.

Gawrieh, Samer, Eduardo Vilar‐Gómez, Laura Wilson, et al.. (2024). Increases and decreases in liver stiffness measurement are independently associated with the risk of liver-related events in NAFLD. Journal of Hepatology. 81(4). 600–608. 30 indexed citations

Gill, Ryan M., Daniela Allende, Patricia Belt, et al.. (2023). The nonalcoholic steatohepatitis extended hepatocyte ballooning score: histologic classification and clinical significance. Hepatology Communications. 7(2). e0033–e0033. 12 indexed citations

Pasricha, Pankaj J., Madhusudan Grover, Katherine P. Yates, et al.. (2022). Progress in Gastroparesis - A Narrative Review of the Work of the Gastroparesis Clinical Research Consortium. Clinical Gastroenterology and Hepatology. 20(12). 2684–2695.e3. 21 indexed citations

Vos, Miriam B., Mark L. Van Natta, Niviann Blondet, et al.. (2022). Randomized placebo‐controlled trial of losartan for pediatric NAFLD. Hepatology. 76(2). 429–444. 22 indexed citations

Appel, Lawrence J., Erin D. Michos, Christine Mitchell, et al.. (2020). The Effects of Four Doses of Vitamin D Supplements on Falls in Older Adults. Annals of Internal Medicine. 174(2). 145–156. 49 indexed citations

Parkman, Henry P., Goro Yamada, Mark L. Van Natta, et al.. (2018). Ethnic, Racial, and Sex Differences in Etiology, Symptoms, Treatment, and Symptom Outcomes of Patients With Gastroparesis. Clinical Gastroenterology and Hepatology. 17(8). 1489–1499.e8. 37 indexed citations

Middleton, Michael S., Mark L. Van Natta, Elhamy Heba, et al.. (2017). Diagnostic accuracy of magnetic resonance imaging hepatic proton density fat fraction in pediatric nonalcoholic fatty liver disease. Hepatology. 67(3). 858–872. 114 indexed citations

10.

Pasricha, Pankaj J., Katherine P. Yates, John O. Clarke, et al.. (2015). Su1449 Incidence and Clinical Significance of Delayed Gastric Emptying for Liquids in Gastroparesis and Chronic Unexplained Nausea and Vomiting (CUNV). Gastroenterology. 148(4). S–515. 2 indexed citations

11.

Vuppalanchi, Raj, Ajay K. Jain, Katherine P. Yates, et al.. (2014). Relationship between changes in serum levels of keratin 18 and changes in liver histology in children and adults with nonalcoholic fatty liver disease. PMC. 2 indexed citations

12.

Koch, Kenneth L., William L. Hasler, Katherine P. Yates, et al.. (2013). Tu2092 Contrasting Gastroparesis in Type 1 (T1DM) vs. Type 2 (T2DM) Diabetes: Clinical Course After 48 Weeks of Follow-up and Relation to Comorbidities and Health Resource Utilization. Gastroenterology. 144(5). S–926. 1 indexed citations

13.

Vos, Miriam B., Ryan Colvin, Patricia Belt, et al.. (2011). Correlation of Vitamin E, Uric Acid, and Diet Composition With Histologic Features of Pediatric NAFLD. Journal of Pediatric Gastroenterology and Nutrition. 54(1). 90–96. 95 indexed citations

14.

Pasricha, Pankaj J., Linda Anh B. Nguyen, William J. Snape, et al.. (2010). 1069 Changes in Quality of Life and Symptoms in a Large Cohort of Patients With Gastroparesis Followed Prospectively for 48 Weeks. Gastroenterology. 138(5). S–155. 8 indexed citations

15.

Neuschwander‐Tetri, Brent A., Jeanne M. Clark, Nathan M. Bass, et al.. (2010). Clinical, Laboratory and Histological Associations in Adults with Nonalcoholic Fatty Liver Disease†. Hepatology. 52(3). 913–924. 374 indexed citations

16.

Kempen, John H., D A Jabs, Jack Dunn, Sheila K. West, & James Tonascia. (2001). Retinal detachment risk in cytomegalovirus retinitis related to the acquired immunodeficiency syndrome.. PubMed. 119(1). 33–40. 60 indexed citations

17.

Piper, Joyce M., James Tonascia, & Genevieve M. Matanoski. (1985). Heavy Phenacetin Use and Bladder Cancer in Women Aged 20 to 49 Years. New England Journal of Medicine. 313(5). 292–295. 70 indexed citations

18.

Stone, Richard W., et al.. (1978). Predictive value of respiratory findings.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 14(2). 189–96. 2 indexed citations

19.

Gordis, Leon, L Naggan, & James Tonascia. (1977). Pitfalls in evaluating the impact of coronary care units on mortality from myocardial infarctions.. PubMed. 141(6). 287–95. 11 indexed citations

20.

Comstock, George W., et al.. (1973). Respiratory Findings and Urban Living. Archives of Environmental Health An International Journal. 27(3). 143–150. 23 indexed citations

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.

Explore authors with similar magnitude of impact