Top experts by indication / Endocrinology/Metabolic
Most active experts in Type 2 Diabetes
2026 edition, data as of October 26, 2026
677 key opinion leaders in the directory are tagged to Type 2 Diabetes. 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. 198 of the 677 people tagged to this indication have this count on record; the 25 highest are listed. Source: ClinicalTrials.gov.
| # | Expert | trials |
|---|---|---|
| 1 | Ralph DefronzoUT Health San Antonio, TX | 19 trials |
| 2 | Guillermo UmpierrezEmory University, GA | 14 trials |
| 3 | James MaloneIN | 13 trials |
| 4 | Adrian VellaMayo Clinic, MN | 12 trials |
| 5 | Athena Philis-TsimikasCA | 9 trials |
| 6 | Bruce BodeAtlanta Diabetes Associates, GA | 8 trials |
| 7 | Richard BergenstalInternational Diabetes Center, MN | 8 trials |
| 8 | Ildiko LingvayUT Southwestern Medical Center, TX | 8 trials |
| 9 | Tracey McLaughlinStanford University School of Medicine, CA | 7 trials |
| 10 | Ronald BrazgRainier Clinical Research Center, WA | 6 trials |
| 11 | Paresh DandonaUniversity at Buffalo, NY | 6 trials |
| 12 | Thomas BlevinsTexas Diabetes & Endocrinology, TX | 6 trials |
| 13 | David KlonoffMills-Peninsula Medical Center (Sutter Health), CA | 6 trials |
| 14 | Stanley HsiaVelocity Clinical Research, CA | 5 trials |
| 15 | Meredith HawkinsNY | 5 trials |
| 16 | Kenneth CusiUniversity of Florida College of Medicine, FL | 5 trials |
| 17 | Francisco PasquelEmory University, GA | 5 trials |
| 18 | Kathleen DunganThe Ohio State University, OH | 5 trials |
| 19 | Grazia AleppoNorthwestern University Feinberg School of Medicine, IL | 5 trials |
| 20 | Richard PratleyAdventHealth Diabetes Institute, FL | 5 trials |
| 21 | Blandine LaferrereColumbia University Irving Medical Center, NY | 5 trials |
| 22 | Tamara HannonIndiana University School of Medicine, IN | 5 trials |
| 23 | Mary VajraveluUniversity of Pittsburgh, PA | 4 trials |
| 24 | Eugenio CersosimoThe University of Texas at San Antonio Health Science Center, TX | 4 trials |
| 25 | Risa WolfJohns Hopkins University School of Medicine, MD | 4 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. 64 of the 677 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 | Deepak BhattIcahn School of Medicine at Mount Sinai, NY | 223,866 citations |
| 2 | Victor MontoriMayo Clinic, MN | 115,878 citations |
| 3 | Matthew BudoffUniversity of California, Los Angeles, CA | 111,573 citations |
| 4 | Christos MantzorosHarvard Medical School, MA | 85,523 citations |
| 5 | Julio RosenstockDallas Diabetes Research Center at Medical City, TX | 69,666 citations |
| 6 | Sanjiv ShahNorthwestern University Feinberg School of Medicine, IL | 65,721 citations |
| 7 | Kenneth CusiUniversity of Florida College of Medicine, FL | 55,953 citations |
| 8 | Dominick AngiolilloUniversity of Florida College of Medicine - Jacksonville, FL | 54,501 citations |
| 9 | Ralph DefronzoUT Health San Antonio, TX | 52,161 citations |
| 10 | Guillermo UmpierrezEmory University, GA | 48,528 citations |
| 11 | Ildiko LingvayUT Southwestern Medical Center, TX | 46,926 citations |
| 12 | Vivian FonsecaTulane University School of Medicine, LA | 41,628 citations |
| 13 | Paresh DandonaUniversity at Buffalo, NY | 34,652 citations |
| 14 | Jeffrey BergerNYU Grossman School of Medicine, NY | 29,370 citations |
| 15 | Bruce BodeAtlanta Diabetes Associates, GA | 27,566 citations |
| 16 | Satish GargUniversity of Colorado Anschutz Medical Campus, CO | 27,553 citations |
| 17 | Grazia AleppoNorthwestern University Feinberg School of Medicine, IL | 25,632 citations |
| 18 | Naomi HamburgBoston University Chobanian & Avedisian School of Medicine, MA | 25,070 citations |
| 19 | Simeon TaylorNJ | 24,673 citations |
| 20 | Philip KernUniversity of Kentucky College of Medicine, KY | 22,497 citations |
| 21 | Peter ReavenUniversity of Arizona, AZ | 22,402 citations |
| 22 | Adrian DobsJohns Hopkins University School of Medicine, MD | 20,142 citations |
| 23 | John NewcomerThriving Mind South Florida, FL | 19,411 citations |
| 24 | Jane ReuschUniversity of Colorado Anschutz Medical Campus, CO | 18,963 citations |
| 25 | Kristina UtzschneiderVA Puget Sound Health Care System, WA | 16,940 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. 61 of the 677 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 | Philip KernUniversity of Kentucky College of Medicine, KY | 19 awards |
| 2 | Lawrence PhillipsGA | 16 awards |
| 3 | Blandine LaferrereColumbia University Irving Medical Center, NY | 12 awards |
| 4 | Michael WidlanskyMedical College of Wisconsin, WI | 10 awards |
| 5 | Michael JensenMN | 9 awards |
| 6 | Peter ReavenUniversity of Arizona, AZ | 9 awards |
| 7 | Adrian DobsJohns Hopkins University School of Medicine, MD | 9 awards |
| 8 | Ralph DefronzoUT Health San Antonio, TX | 9 awards |
| 9 | Athena Philis-TsimikasCA | 8 awards |
| 10 | Meredith HawkinsNY | 8 awards |
| 11 | Christos MantzorosHarvard Medical School, MA | 8 awards |
| 12 | Arlene StecenkoEmory University, GA | 8 awards |
| 13 | Kieren MatherEli Lilly and Company, IN | 8 awards |
| 14 | Naomi HamburgBoston University Chobanian & Avedisian School of Medicine, MA | 8 awards |
| 15 | Jane ReuschUniversity of Colorado Anschutz Medical Campus, CO | 8 awards |
| 16 | Tracey McLaughlinStanford University School of Medicine, CA | 7 awards |
| 17 | Steven SmithZealand Pharma A/S, FL | 7 awards |
| 18 | Mishaela RubinColumbia University Irving Medical Center, NY | 7 awards |
| 19 | Tamara HannonIndiana University School of Medicine, IN | 7 awards |
| 20 | Richard PratleyAdventHealth Diabetes Institute, FL | 6 awards |
| 21 | Steven RussellMA | 5 awards |
| 22 | William CefaluLA | 5 awards |
| 23 | Philip RaskinUT Southwestern Medical Center, TX | 5 awards |
| 24 | Jeffrey BergerNYU Grossman School of Medicine, NY | 5 awards |
| 25 | Matthew BudoffUniversity of California, Los Angeles, CA | 5 awards |
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. 30 of the 677 people tagged to this indication have at least 2 registered trials in it and this count on record; the 25 highest are listed. Source: Congress abstracts, DOI-verified.
| # | Expert | contributions |
|---|---|---|
| 1 | Guillermo UmpierrezEmory University, GA | 109 contributions |
| 2 | Francisco PasquelEmory University, GA | 73 contributions |
| 3 | Julio RosenstockDallas Diabetes Research Center at Medical City, TX | 66 contributions |
| 4 | Vivian FonsecaTulane University School of Medicine, LA | 66 contributions |
| 5 | Petter BjornstadUniversity of Washington, WA | 65 contributions |
| 6 | Gregory ForlenzaUniversity of Colorado Anschutz Medical Campus, CO | 58 contributions |
| 7 | Bruce BodeAtlanta Diabetes Associates, GA | 53 contributions |
| 8 | Michael HallerUniversity of Florida, FL | 51 contributions |
| 9 | Tamara HannonIndiana University School of Medicine, IN | 47 contributions |
| 10 | Ildiko LingvayUT Southwestern Medical Center, TX | 43 contributions |
| 11 | Yogish KudvaMayo Clinic, MN | 40 contributions |
| 12 | Grazia AleppoNorthwestern University Feinberg School of Medicine, IL | 40 contributions |
| 13 | Jane ReuschUniversity of Colorado Anschutz Medical Campus, CO | 40 contributions |
| 14 | Risa WolfJohns Hopkins University School of Medicine, MD | 26 contributions |
| 15 | Satish GargUniversity of Colorado Anschutz Medical Campus, CO | 22 contributions |
| 16 | Tracey McLaughlinStanford University School of Medicine, CA | 21 contributions |
| 17 | Deepak BhattIcahn School of Medicine at Mount Sinai, NY | 21 contributions |
| 18 | David KlonoffMills-Peninsula Medical Center (Sutter Health), CA | 21 contributions |
| 19 | Christos MantzorosHarvard Medical School, MA | 18 contributions |
| 20 | Blandine LaferrereColumbia University Irving Medical Center, NY | 12 contributions |
| 21 | Kathleen DunganThe Ohio State University, OH | 11 contributions |
| 22 | Philip KernUniversity of Kentucky College of Medicine, KY | 9 contributions |
| 23 | Ralph DefronzoUT Health San Antonio, TX | 9 contributions |
| 24 | Thomas BlevinsTexas Diabetes & Endocrinology, TX | 9 contributions |
| 25 | Joshua JosephThe Ohio State University, OH | 8 contributions |
Emerging
37 of the 677 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.
| Samina AfreenUniversity of Virginia, VA |
| Alina AllenMayo Clinic, MN |
| Thomas BlevinsTexas Diabetes & Endocrinology, TX |
| Sabina CasulaBruce W. Carter VA Medical Center, FL |
| Manu ChakravarthyNJ |
| Odelia CooperCedars-Sinai Medical Center, CA |
| Michael CrutchlowKallyope, PA |
| Winston DunnUniversity of Kansas Medical Center, KS |
| Valerie EspinosaTexas Diabetes & Endocrinology, TX |
| Mercedes FalcigliaOH |
| Houssam HalawiMayo Clinic, MN |
| Stanley HsiaVelocity Clinical Research, CA |
| Uzoma IbebuoguTN |
| Ramzi IbrahimBoston Medical Center, AZ |
| Laura KnechtAZ |
| Jesse KrakauerBeaumont Hospital, MI |
| Kevin LavelleIndiana University Indianapolis, IN |
| Dustin LeThomas Jefferson University, PA |
| Elizabeth LittlejohnIL |
| Michelle MageeMedStar Health Research Institute & Georgetown University School of Medicine, DC |
| Roy MarcusPA |
| Antoinette MoranUniversity of Minnesota Medical School, MN |
| Kalpana MuthusamyMayo Clinic, MN |
| Bryce NelsonVirginia Commonwealth University, VA |
| John OstrominskiBrigham and Women's Hospital, MA |
How these tables are computed
The cohort is every profile in the directory tagged to Type 2 Diabetes, 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.
Filter, sort and open every Type 2 Diabetes profile in the directory