{"schema_version":"1","generated_at":"2026-11-04T01:44:19.296Z","data_as_of":null,"url":"https://www.findmykol.com/kol/gary-briefel","json_url":"https://www.findmykol.com/kol/gary-briefel/profile.json","record_kind":"basic","profile_kind":"clinical","person":{"slug":"gary-briefel","name":"Gary Briefel","credential":"MD","specialty":"Nephrology","specialty_raw":"Nephrology","therapeutic_area":"Nephrology","therapeutic_areas":["Nephrology"],"city":"Baltimore","state":"MD","region":{"label":"Northeast","url":"https://www.findmykol.com/region/northeast"}},"identifiers":{"npi":"1801853304","openalex":"A5086472803"},"summary":"Gary Briefel is a Nephrology physician. OpenAlex indexes 26 publications with 604 citations (h-index 13); ClinicalTrials.gov lists 1 registered study matched to this name.","overview":null,"focus":{"indications":[],"research_topics":["Nephrology"]},"scholarship":{"works_count":26,"cited_by_count":604,"h_index":13,"latest_activity_year":2022,"source":"works"},"trials":{"count":1,"shown":1,"withheld":0,"matched_by":"investigator name, confirmed against institution and geography","rows":[{"nct":"NCT01450709","title":"Observational Study of Kibow Biotics in Chronic Kidney Failure Patients on Dialysis","status":"COMPLETED","role":"Overall official","sponsor":"Kibow Pharma","source_url":"https://clinicaltrials.gov/study/NCT01450709","trial_url":"https://www.findmykol.com/trial/NCT01450709"}],"source":"trials"},"payments":{"company_count":4,"program_years":{"first":2021,"last":null},"rows_total":6,"shown":3,"withheld":3,"rows":[{"payer":"AstraZeneca Pharmaceuticals LP","program_year":2022,"amount_usd":148.17,"payment_count":2,"source_url":"https://openpaymentsdata.cms.gov/search?query=1801853304"},{"payer":"Amgen Inc.","program_year":2022,"amount_usd":30.84,"payment_count":2,"source_url":"https://openpaymentsdata.cms.gov/search?query=1801853304"},{"payer":"Fresenius USA Marketing, Inc.","program_year":2022,"amount_usd":18.43,"payment_count":1,"source_url":"https://openpaymentsdata.cms.gov/search?query=1801853304"}],"record_url":"https://openpaymentsdata.cms.gov/search?query=1801853304","source":"payments"},"prescribing":{"data_year":2021,"areas_total":1,"areas_shown":1,"areas":[{"area":"Cardiovascular","share_pct":100,"classes_total":1,"classes":[{"class":"Loop diuretic","setting":"prescribed","share_pct":100,"drugs":[{"name":"Furosemide","share_pct":100}],"max_beneficiaries":null}]}],"care_setting":{"dominant":"facility","data_year":2019,"office_pct":0,"facility_pct":100},"source":"medicare"},"publications":{"total":26,"shown":5,"withheld":21,"matched_by":"OpenAlex author record","recent":[{"title":"Parameters Used to Discontinue Dialysis in Acute Kidney Injury Recovery: A Survey of United States Nephrologists","year":2015,"journal":"˜The œNephron journals/Nephron journals","source_url":"https://doi.org/10.1159/000381924","status":"verified"},{"title":"268: A Case of Pathologic Polyarteritis Nodosa (PAN) in the Setting of Clinical Calciphylaxis","year":2010,"journal":"American Journal of Kidney Diseases","source_url":"https://doi.org/10.1053/j.ajkd.2010.02.275","status":"verified"},{"title":"Nontherapeutic Research and Minimal Risk","year":2002,"journal":"IRB Ethics and Human Research","source_url":"https://doi.org/10.2307/3563790","status":"verified"},{"title":"Mutation Detection of PKD1 Identifies a Novel Mutation Common to Three Families with Aneurysms and/or Very-Early-Onset Disease","year":1999,"journal":"The American Journal of Human Genetics","source_url":"https://doi.org/10.1086/302657","status":"verified"},{"title":"Ventilation-perfusion scintigraphic evaluation of pulmonary clot burden after percutaneous thrombolysis of clotted hemodialysis access grafts","year":1999,"journal":"American Journal of Kidney Diseases","source_url":"https://doi.org/10.1016/s0272-6386(99)70344-6","status":"verified"}],"source":"works"},"contact":{"address_1":"4940 EASTERN AVE","city":"Baltimore","state":"MD","zip":"212242735","phone":"410-550-1800","source_url":"https://npiregistry.cms.hhs.gov/provider-view/1801853304","source":"identity"},"similar":[{"name":"Andrew Levey","slug":"andrew-levey","institution":"Tufts Medical Center","specialty":"Nephrology","url":"https://www.findmykol.com/kol/andrew-levey","json_url":"https://www.findmykol.com/kol/andrew-levey/profile.json"},{"name":"Laura Svetkey","slug":"laura-svetkey","institution":"Duke University","specialty":"Nephrology","url":"https://www.findmykol.com/kol/laura-svetkey","json_url":"https://www.findmykol.com/kol/laura-svetkey/profile.json"},{"name":"Prasad Devarajan","slug":"prasad-devarajan","institution":"Cincinnati Children's Hospital Medical Center","specialty":"Pediatric Nephrology","url":"https://www.findmykol.com/kol/prasad-devarajan","json_url":"https://www.findmykol.com/kol/prasad-devarajan/profile.json"},{"name":"Rajesh V. Thakker","slug":"rajesh-thakker","institution":"Queen Mary University of London","url":"https://www.findmykol.com/kol/rajesh-thakker","json_url":"https://www.findmykol.com/kol/rajesh-thakker/profile.json"}],"coverage":{"note":"A basic directory record. Sections absent here were not yet checked for this person, so absence means not yet looked, never none found.","not_yet_checked":["funding","congress","network","presence","recognition"]},"not_included":{"note":"This document is the public layer: neutral facts cited to their source. Judgments (influence tier, archetype, trajectory commentary) and the itemized rows past each section's public teaser are account features and are not served here or to crawlers.","withheld_rows":{"payments":3,"publications":21}},"sources":{"identity":{"name":"NPPES (CMS)","url":"https://npiregistry.cms.hhs.gov","provides":"Identity, specialty and practice location for every U.S. clinician","coverage":"Practice location (not mailing) from the NPPES record","record_last_updated":"2014-10-30","collected_at":"2026-11-03T00:00:00.000Z"},"works":{"name":"OpenAlex","url":"https://openalex.org","provides":"Citations, h-index, research topics, most-cited works and congress abstracts"},"trials":{"name":"ClinicalTrials.gov","url":"https://clinicaltrials.gov","provides":"Investigator roles on registered clinical studies"},"payments":{"name":"CMS Open Payments","url":"https://openpaymentsdata.cms.gov","provides":"Industry payments reported to CMS, by company and program year","disclaimer":"Payments are publicly reported to CMS. Their existence does not imply wrongdoing; CMS does not interpret these data.","coverage":"Program years 2021 onward"},"medicare":{"name":"CMS Medicare Part D Prescribers and Part B","url":"https://data.cms.gov/provider-summary-by-type-of-service","provides":"Share of this prescriber's Medicare fee-for-service prescribing by drug class and therapeutic area, classified with WHO ATC and NLM RxClass","disclaimer":"Proportions of the prescriber's own classified prescribing, never patient counts or dollar amounts. Fee-for-service only; CMS publishes about 17 months after the fact and suppresses counts of ten patients or fewer.","data_year":2021}},"methodology_url":"https://www.findmykol.com/about#methodology"}