Top experts by indication / Cardiology
Most active experts in Atrial Fibrillation
2026 edition, data as of October 26, 2026
970 key opinion leaders in the directory are tagged to Atrial Fibrillation. The tables below rank them by one public measure each: registered trials, citations, NIH awards and congress contributions. Each is a count from a named source, not a judgment about the person, and every row links a profile where the count can be checked.
Most registered trials
Registered clinical trials in this indication on which the person is a listed investigator, counted from ClinicalTrials.gov. 227 of the 970 people tagged to this indication have this count on record; the 25 highest are listed. Source: ClinicalTrials.gov.
| # | Expert | trials |
|---|---|---|
| 1 | Dhanunjaya LakkireddyKansas City Heart Rhythm Institute at HCA Midwest Health, KS | 33 trials |
| 2 | Andrea NataleTX | 27 trials |
| 3 | Nassir MarroucheTulane University School of Medicine, LA | 12 trials |
| 4 | Oussama WazniCleveland Clinic, OH | 10 trials |
| 5 | Gregory MarcusUniversity of California, San Francisco, CA | 10 trials |
| 6 | Suneet MittalThe Valley Hospital, NJ | 10 trials |
| 7 | Stavros StavrakisUniversity of Oklahoma Health Sciences Center, OK | 10 trials |
| 8 | Kenneth EllenbogenVCU School of Medicine, VA | 10 trials |
| 9 | Devi NairSt. Bernard's Heart & Vascular Center, AR | 9 trials |
| 10 | Sanjiv NarayanStanford University School of Medicine, CA | 8 trials |
| 11 | Douglas PackerIntermountain Health, UT | 7 trials |
| 12 | Larry ChinitzNYU Langone Health, NY | 7 trials |
| 13 | Sanjay DixitUniversity of Pennsylvania, PA | 6 trials |
| 14 | Walid SalibaCleveland Clinic, OH | 6 trials |
| 15 | Jonathan SteinbergSummit Health, NJ | 6 trials |
| 16 | David WilberLoyola University Chicago Stritch School of Medicine, IL | 6 trials |
| 17 | Samuel DudleyUniversity of Minnesota Medical School, MN | 6 trials |
| 18 | Ralph DamianoWashington University School of Medicine in St. Louis, MO | 5 trials |
| 19 | Hakan OralUniversity of Michigan, MI | 5 trials |
| 20 | Gregory FeldUniversity of California, San Diego, CA | 5 trials |
| 21 | Gery TomassoniBaptist Health Medical Group, KY | 5 trials |
| 22 | Hugh CalkinsJohns Hopkins University School of Medicine, MD | 5 trials |
| 23 | Edward GerstenfeldUniversity of California, San Francisco, CA | 5 trials |
| 24 | Moussa MansourMassachusetts General Hospital, MA | 5 trials |
| 25 | Anne CurtisUniversity at Buffalo, NY | 5 trials |
Most cited
Citations to the person's whole published record in OpenAlex, not only their work in this indication, among the people with at least two registered trials in it. 93 of the 970 people tagged to this indication have at least 2 registered trials in it and this count on record; the 25 highest are listed. Source: OpenAlex.
| # | Expert | citations |
|---|---|---|
| 1 | Eric TopolScripps Research Institute (Scripps Research), CA | 184,218 citations |
| 2 | Hugh CalkinsJohns Hopkins University School of Medicine, MD | 120,906 citations |
| 3 | Gregory MarcusUniversity of California, San Francisco, CA | 82,961 citations |
| 4 | Samir KapadiaCleveland Clinic, OH | 80,571 citations |
| 5 | Paul HeidenreichStanford University School of Medicine, CA | 73,874 citations |
| 6 | Kenneth EllenbogenVCU School of Medicine, VA | 73,817 citations |
| 7 | Michael EzekowitzSidney Kimmel Medical College, PA | 73,584 citations |
| 8 | Francis MarchlinskiUniversity of Pennsylvania, PA | 72,448 citations |
| 9 | Mina ChungCleveland Clinic, OH | 71,978 citations |
| 10 | Jonathan PicciniDuke University, NC | 59,850 citations |
| 11 | Dean KereiakesThe Christ Hospital, OH | 56,141 citations |
| 12 | Steven LubitzBroad Institute, MA | 55,582 citations |
| 13 | Douglas PackerIntermountain Health, UT | 53,138 citations |
| 14 | David WilberLoyola University Chicago Stritch School of Medicine, IL | 49,876 citations |
| 15 | Warren JackmanThe University of Oklahoma Health Sciences Center, OK | 42,877 citations |
| 16 | Paul FriedmanMayo Clinic, MN | 40,528 citations |
| 17 | Allan KleinCleveland Clinic, OH | 37,238 citations |
| 18 | Dawood DarbarPenn State Health, IL | 37,206 citations |
| 19 | David CallansUniversity of Pennsylvania, PA | 36,340 citations |
| 20 | Anne CurtisUniversity at Buffalo, NY | 35,374 citations |
| 21 | Saibal KarLos Robles Health System, CA | 31,870 citations |
| 22 | Peter NoseworthyMayo Clinic, MN | 31,178 citations |
| 23 | Jose JoglarUT Southwestern Medical Center, TX | 27,921 citations |
| 24 | Jared MagnaniUniversity of Pittsburgh, PA | 27,880 citations |
| 25 | Hakan OralUniversity of Michigan, MI | 25,840 citations |
Most NIH awards
NIH awards on the person's record in NIH RePORTER, across all of their funded work, among the people with at least two registered trials in this indication. 37 of the 970 people tagged to this indication have at least 2 registered trials in it and this count on record; the 25 highest are listed. Source: NIH RePORTER.
| # | Expert | awards |
|---|---|---|
| 1 | Eric TopolScripps Research Institute (Scripps Research), CA | 14 awards |
| 2 | Kalyanam ShivkumarUniversity of California, Los Angeles, CA | 10 awards |
| 3 | Steven BollingUniversity of Michigan, MI | 8 awards |
| 4 | Jared MagnaniUniversity of Pittsburgh, PA | 7 awards |
| 5 | Dawood DarbarPenn State Health, IL | 7 awards |
| 6 | Sanjiv NarayanStanford University School of Medicine, CA | 7 awards |
| 7 | Miguel ValderrabanoHouston Methodist Hospital, TX | 6 awards |
| 8 | Samuel DudleyUniversity of Minnesota Medical School, MN | 6 awards |
| 9 | Mario GaudinoWeill Cornell Medicine, NY | 6 awards |
| 10 | Martin BurkeIL | 5 awards |
| 11 | Jeffrey AndersonUT | 4 awards |
| 12 | Gregory MarcusUniversity of California, San Francisco, CA | 4 awards |
| 13 | Paul HeidenreichStanford University School of Medicine, CA | 4 awards |
| 14 | Mina ChungCleveland Clinic, OH | 4 awards |
| 15 | Samir SabaUniversity of Pittsburgh School of Medicine, PA | 3 awards |
| 16 | Saman NazarianUniversity of Pennsylvania, PA | 3 awards |
| 17 | Stavros StavrakisUniversity of Oklahoma Health Sciences Center, OK | 3 awards |
| 18 | Steven LubitzBroad Institute, MA | 2 awards |
| 19 | Peter NoseworthyMayo Clinic, MN | 2 awards |
| 20 | Ralph DamianoWashington University School of Medicine in St. Louis, MO | 2 awards |
| 21 | Edward GerstenfeldUniversity of California, San Francisco, CA | 2 awards |
| 22 | Peter ZimetbaumBeth Israel Deaconess Medical Center, MA | 2 awards |
| 23 | Minang TurakhiaCA | 1 award |
| 24 | Allan KleinCleveland Clinic, OH | 1 award |
| 25 | Douglas PackerIntermountain Health, UT | 1 award |
Most congress contributions
Congress abstracts and presentations attributed to the person and verified by DOI, across every meeting the directory tracks, among the people with at least two registered trials in this indication. 13 of the 970 people tagged to this indication have at least 2 registered trials in it and this count on record; the 13 highest are listed. Source: Congress abstracts, DOI-verified.
| # | Expert | contributions |
|---|---|---|
| 1 | Michael FradleyPenn Medicine, FL | 12 contributions |
| 2 | Peter NoseworthyMayo Clinic, MN | 5 contributions |
| 3 | Paul FriedmanMayo Clinic, MN | 5 contributions |
| 4 | Walid SalibaCleveland Clinic, OH | 3 contributions |
| 5 | Jared MagnaniUniversity of Pittsburgh, PA | 1 contribution |
| 6 | Oussama WazniCleveland Clinic, OH | 1 contribution |
| 7 | Hakan OralUniversity of Michigan, MI | 1 contribution |
| 8 | Saman NazarianUniversity of Pennsylvania, PA | 1 contribution |
| 9 | Hugh CalkinsJohns Hopkins University School of Medicine, MD | 1 contribution |
| 10 | Dawood DarbarPenn State Health, IL | 1 contribution |
| 11 | Samuel AsirvathamMayo Clinic, MN | 1 contribution |
| 12 | Francis MarchlinskiUniversity of Pennsylvania, PA | 1 contribution |
| 13 | David CallansUniversity of Pennsylvania, PA | 1 contribution |
Emerging
50 of the 970 carry the Emerging flag: publication and trial activity rising over the recent three years, in the top ten percent for growth among specialty peers at a similar career stage. Listed A to Z, not ranked; the flag is a yes or nothing, never a score. How the flag is computed.
| Amier AhmadHonorHealth, WA |
| Charles AndersonProvidence Sacred Heart Medical Center, WA |
| Sushanth AroorThe University of Texas Health Science Center at Houston, TX |
| Mujeeb BasitUT Southwestern Medical Center, TX |
| Natalia BerryDartmouth College, NH |
| Mandeep BhargavaCleveland Clinic, OH |
| Indrajit ChoudhuriWI |
| Mauricio ConchaIntercoastal Medical Group, FL |
| Sergio ContiUniversity of Iowa, IA |
| Robert Copeland-HalperinHofstra University, NY |
| Yvonne CurranNorthwestern University Feinberg School of Medicine, IL |
| Mithilesh DasIndiana University School of Medicine, IN |
| Macdonald DickUniversity of Michigan, MI |
| Rahul DoshiHonorHealth, CA |
| Shephal DoshiPacific Heart Institute, CA |
| Peter FarjoUniversity of Iowa, IA |
| Marshal FoxUniversity of Massachusetts Chan Medical School, MA |
| Michele GolinoFL |
| Charles HaffajeeBeth Israel Deaconess Medical Center, MA |
| Ramzi IbrahimBoston Medical Center, AZ |
| Daniel IceDeborah Heart and Lung Center, NJ |
| Nihar JenaMI |
| Garvan KaneMayo Clinic, MN |
| Michael KatcherMA |
| Richard KukCentra Health, VA |
How these tables are computed
The cohort is every profile in the directory tagged to Atrial Fibrillation, from the person's registered trials and published research. Only indications with at least 200 tagged people get a page; a smaller cohort would say more about the tag than about the people in it. Each table sorts the cohort by one count, highest first, with no weighting, no blending and no editorial pass. Ties are broken by the profile's stable internal id so the same counts always give the same order. A person with no count on record is left out of that table, not ranked last.
Citations, NIH awards and congress contributions are counts over a person's whole record, not their work in this indication alone, so those three tables are limited to the indication's investigators: people with at least 2 registered trials in it. Without that rule the most cited people in a cohort are the ones whose careers span many diseases, which is a fact about their careers, not about this field. The registered-trials table is the indication-scoped count itself and has no such limit.
The counts are recomputed on every publish and the page carries the date of the publish it was built from. Previous editions are superseded, not archived.
What is deliberately absent
Reported industry payments are on every profile but are not a table here: a count of payers is a fact, and ranking people by it reads as a judgment. Prescribing volume is part of the paid workspace. The directory's influence tier is a judgment and never orders a public page. Sources and methodology.
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