Argenx US, Inc.: payments to clinicians
Argenx US, Inc.'s payments to clinicians rose 56% in 2025, to $4,434,281 across 6,356 people. Consulting fees was the largest category at 40%, then speaking and faculty fees (32%). The largest single recipient (Internal Medicine, Hematology & Oncology, California) received $509,601.
| Program year | Total | Payments | Clinicians paid |
|---|---|---|---|
| 2025 | $4,434,281 | 21,940 | 6,356 |
| 2024 | $2,842,931 | 19,446 | 5,586 |
Largest recipients in 2025
| # | Clinician | Specialty | Location | Amount |
|---|---|---|---|---|
| 1 | Pamela Michelle Klein, MD | Internal Medicine, Hematology & Oncology | San Francisco, CA | $509,601 |
| 2 | Kenneth C. Gorson, MD | Psychiatry & Neurology, Neurology | Wellesley, MA | $229,632 |
| 3 | Jeffrey A. Allen, M.D. | Psychiatry & Neurology, Neurology | Minneapolis, MN | $119,703 |
| 4 | Dinesh Khanna, M.D. | Internal Medicine, Rheumatology | Ann Arbor, MI | $101,930 |
| 5 | Raghav Govindarajan, MD | Psychiatry & Neurology, Neuromuscular Medicine | O Fallon, IL | $83,277 |
| 6 | Mark B. Bromberg, M.D.,PH.D. | Psychiatry & Neurology, Neurology | Salt Lake City, UT | $74,534 |
| 7 | Barry K. Vaught, M.D. | Psychiatry & Neurology, Neurology | Crab Orchard, WV | $70,498 |
| 8 | Chafic Karam, M.D. | Psychiatry & Neurology, Neurology | Portland, OR | $70,106 |
| 9 | Samir P. Macwan, M.D. | Psychiatry & Neurology, Neuromuscular Medicine | Rancho Mirage, CA | $64,434 |
| 10 | Patrick Kwon, M.D. | Psychiatry & Neurology, Neuromuscular Medicine | Brooklyn, NY | $61,435 |
| 11 | Mario Vukic, MD | Specialist | Hackensack, NJ | $60,977 |
| 12 | Andrew J. Gordon, M.D. | Psychiatry & Neurology, Neurology | Lake Barrington, IL | $58,932 |
| 13 | Tuan Hoang Vu, MD | Psychiatry & Neurology, Neurology | Tampa, FL | $55,404 |
| 14 | Jeffrey Rosenfeld, MD | Psychiatry & Neurology, Neuromuscular Medicine | Fresno, CA | $50,174 |
| 15 | Joshua Peter Alpers, M.D. | Psychiatry & Neurology, Neuromuscular Medicine | Chattanooga, TN | $49,921 |
| 16 | Rossitza Iakimova Chichkova, MD | Psychiatry & Neurology, Neurology | Tampa, FL | $46,793 |
| 17 | Nicholas J. Silvestri, M.D. | Psychiatry & Neurology, Neuromuscular Medicine | Buffalo, NY | $46,224 |
| 18 | Amanda Lynn Hernandez, MD, PHD | Psychiatry & Neurology, Neurology | Farmington, CT | $39,971 |
| 19 | Amit Sachdev, M.D., MS | Psychiatry & Neurology, Neurology | East Lansing, MI | $38,838 |
| 20 | Michael K. Hehir II, MD | Psychiatry & Neurology, Neurology | Burlington, VT | $38,571 |
| 21 | Charulatha Nagar, M.D. | Psychiatry & Neurology, Neurology | Lake Forest, IL | $37,515 |
| 22 | Perry Boryee Shieh, MD | Psychiatry & Neurology, Neurology | Los Angeles, CA | $35,790 |
| 23 | Gregory Aram Sahagian, M.D. | Psychiatry & Neurology, Neurology | Carlsbad, CA | $34,131 |
| 24 | Christyn Marie Edmundson, MD | Psychiatry & Neurology, Neuromuscular Medicine | Seattle, WA | $33,141 |
| 25 | David A. Clark, DO | Psychiatry & Neurology, Neurology | Springfield, OR | $32,731 |
| 26 | Denis A. Ostrovskiy, M.D. | Psychiatry & Neurology, Neurology | Lake Success, NY | $32,604 |
| 27 | Beth Stein, MD | Psychiatry & Neurology, Neuromuscular Medicine | Paterson, NJ | $31,775 |
| 28 | James Howard, MD | Psychiatry & Neurology, Neurology | Chapel Hill, NC | $29,966 |
| 29 | Rizwan S. Bajwa, DO | Psychiatry & Neurology, Neurology | Hinsdale, IL | $27,272 |
| 30 | Bennett Myers, M.D. | Psychiatry & Neurology, Neurology | Amherst, NY | $27,196 |
| 31 | John Michael Hemphill, M.D. | Psychiatry & Neurology, Neurology with Special Qualifications in Child Neurology | Savannah, GA | $27,140 |
| 32 | Krishna Pokala, MD | Psychiatry & Neurology, Neurology | Austin, TX | $26,444 |
| 33 | Arjun Seth, MD | Psychiatry & Neurology, Neuromuscular Medicine | Chicago, IL | $25,417 |
| 34 | John D. England, MD | Psychiatry & Neurology, Neurology | New Orleans, LA | $24,921 |
| 35 | Noor S. Sachdev, MD | Psychiatry & Neurology, Neurology | San Jose, CA | $24,241 |
| 36 | Daniel Benson Rootman, MSC MD FRCSC | Ophthalmology | Los Angeles, CA | $23,483 |
| 37 | Sommer Ebdlahad Philips, M.D. | Psychiatry & Neurology, Neurology | Raleigh, NC | $23,222 |
| 38 | Eduardo A. De Sousa, M.D. | Psychiatry & Neurology, Neurology | Moore, OK | $23,196 |
| 39 | Mark Haas, M.D. | Pathology, Anatomic Pathology & Clinical Pathology | Los Angeles, CA | $23,160 |
| 40 | Michael H. Rivner, MD | Psychiatry & Neurology, Clinical Neurophysiology | Macon, GA | $23,118 |
| 41 | Sami L. Khella, MD | Psychiatry & Neurology, Neurology | Philadelphia, PA | $23,024 |
| 42 | Sharique Aslam Ansari, M.D., MPH | Psychiatry & Neurology, Neurology | Fort Worth, TX | $22,652 |
| 43 | Marius N. Stan, M.D. | Internal Medicine, Endocrinology, Diabetes & Metabolism | Rochester, MN | $21,742 |
| 44 | Rohit Aggarwal, M.D. | Internal Medicine, Rheumatology | Pittsburgh, PA | $21,297 |
| 45 | Alyson Lovan Hommel, MD | Psychiatry & Neurology, Neurology | Wilmington, NC | $20,965 |
| 46 | Wendy W. Lee, MD | Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery | Miami, FL | $20,124 |
| 47 | Tania Beatriz Beltran Papsdorf, MD | Psychiatry & Neurology, Neurology | Osage Beach, MO | $19,833 |
| 48 | Sudhir S. Athni, MD | Psychiatry & Neurology, Neurology | Macon, GA | $19,301 |
| 49 | NPI 1891729430 | — | $18,783 | |
| 50 | Madhura Tamhankar, MD | Ophthalmology, Neuro-ophthalmology | Philadelphia, PA | $18,379 |
| 51 | Ruth Kellum Fredericks, M.D. | Psychiatry & Neurology, Neurology | Jackson, MS | $18,328 |
| 52 | John Christopher Novak, M.D. | Psychiatry & Neurology, Clinical Neurophysiology | Westerville, OH | $18,120 |
| 53 | Andrew Richard Harrison, M.D. | Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery | Minneapolis, MN | $16,417 |
| 54 | Emma Ciafaloni, MD | Psychiatry & Neurology, Vascular Neurology | Rochester, NY | $16,406 |
| 55 | Jose Rafael Carlo-Izquierdo, M.D. | Psychiatry & Neurology, Pain Medicine | San Juan, PR | $16,221 |
| 56 | Ghaith Noaiseh, MD | Internal Medicine, Rheumatology | Kansas City, MO | $16,153 |
| 57 | Christina Chrisman, M.D. | Psychiatry & Neurology, Neurology | Phoenix, AZ | $16,047 |
| 58 | Shivkumar Bhadola | Psychiatry & Neurology, Neurology | Worcester, MA | $15,889 |
| 59 | Don O. Kikkawa, M.D. | Ophthalmology | La Jolla, CA | $15,788 |
| 60 | Jeffrey W. Groves, MD | Psychiatry & Neurology, Neurology | Draper, UT | $15,668 |
| 61 | Verena Clarissa Samara, M.D. | Psychiatry & Neurology, Neurology | Reno, NV | $15,583 |
| 62 | Ariel H. Marks, MD | Psychiatry & Neurology, Neurology | Boston, MA | $15,520 |
| 63 | Stephanus Busono, MD | Psychiatry & Neurology, Neurology | Somerset, NJ | $13,826 |
| 64 | Michael Keith Ackerman, D.O. | Internal Medicine | Warrenton, VA | $13,733 |
| 65 | Melanie Gail Taylor, M.D. | Psychiatry & Neurology, Neurology | Grand Rapids, MI | $12,990 |
| 66 | Yasir Al-Khalili, M.D. | Psychiatry & Neurology, Neurology | South Hill, VA | $12,961 |
| 67 | Ning Sarah Yang | Psychiatry & Neurology, Neurology | Johnstown, CO | $12,871 |
| 68 | David H. Weinberg, M.D. | Psychiatry & Neurology, Neurology | Brighton, MA | $12,700 |
| 69 | Ali Aamer Habib, MD | Psychiatry & Neurology, Neuromuscular Medicine | Orange, CA | $12,188 |
| 70 | Khaled Hammoud, MD | Psychiatry & Neurology, Neurology | Lafayette, IN | $12,002 |
| 71 | Manisha Kak Korb, M.D. | Psychiatry & Neurology, Neuromuscular Medicine | West Palm Beach, FL | $11,984 |
| 72 | Sheetal Shroff, MD | Psychiatry & Neurology, Neurology | Houston, TX | $11,803 |
| 73 | Richard Steven Blumberg, MD | Internal Medicine, Gastroenterology | Boston, MA | $11,758 |
| 74 | Walter Gino Carlini, MD | Psychiatry & Neurology, Neurology | Medford, OR | $11,457 |
| 75 | Said R. Beydoun, M.D. | Psychiatry & Neurology, Clinical Neurophysiology | Los Angeles, CA | $11,220 |
| 76 | Christopher Scheiner, MD | Psychiatry & Neurology, Neurology | Dayton, OH | $11,192 |
| 77 | Jean-Raphael Schneider, M.D. | Psychiatry & Neurology, Neurology | Clearwater, FL | $11,177 |
| 78 | Namita Goyal, M.D. | Psychiatry & Neurology, Neuromuscular Medicine | Orange, CA | $11,134 |
| 79 | Mark A. Landrio, M.D. | Psychiatry & Neurology, Neurology | Winchester, VA | $11,060 |
| 80 | Donald J. Iverson, MD | Psychiatry & Neurology, Neurology | Eureka, CA | $11,054 |
| 81 | Daniel L. Menkes, MD | Psychiatry & Neurology, Neurology | Royal Oak, MI | $11,004 |
| 82 | Adam D. Horvit, M.D. | Psychiatry & Neurology, Neurology | Round Rock, TX | $10,881 |
| 83 | Brian Samuel Droker, MD | Psychiatry & Neurology, Neurology | Carlsbad, CA | $10,879 |
| 84 | Bonnie Elizabeth Lonze, M.D., PH.D. | Surgery | New York, NY | $10,725 |
| 85 | Ikjae Lee, M.D. | Psychiatry & Neurology, Neuromuscular Medicine | New York, NY | $10,525 |
| 86 | Jon Durrani, DO | Psychiatry & Neurology, Neurology | Centerville, OH | $10,387 |
| 87 | Allison M. Crowell, MD | Psychiatry & Neurology, Neurology | Lancaster, PA | $10,181 |
| 88 | Yusuf Yazici, MD | Internal Medicine, Rheumatology | New York, NY | $10,156 |
| 89 | Matthew Charles Baker, MD | Internal Medicine, Rheumatology | Stanford, CA | $10,150 |
| 90 | Ashish Mohammad Kabir, M.D. | Psychiatry & Neurology, Clinical Neurophysiology | Dalton, GA | $10,093 |
| 91 | Teja Mahadeshwar Kapoor, M.D. | Internal Medicine, Rheumatology | New York, NY | $10,015 |
| 92 | Norman Latov, MD | Psychiatry & Neurology, Neurology | New York, NY | $9,584 |
| 93 | Teresa K. Tarrant, MD | Internal Medicine, Rheumatology | Chapel Hill, NC | $9,545 |
| 94 | Shan Chen, MD, PHD | Psychiatry & Neurology, Neurology | New Brunswick, NJ | $9,323 |
| 95 | Bassam Malo, M.D. | Psychiatry & Neurology, Neurology | Fenton, MO | $9,235 |
| 96 | Rebecca E. Traub, M.D. | Psychiatry & Neurology, Neurology | Chapel Hill, NC | $9,164 |
| 97 | Pushpa Narayanaswami, MD | Psychiatry & Neurology, Neurology | Boston, MA | $8,854 |
| 98 | Lori M. Guyton, M.D. | Psychiatry & Neurology, Neurology | Herrin, IL | $8,842 |
| 99 | Jennifer Kuen-Ling King, MD | Internal Medicine, Rheumatology | Los Angeles, CA | $8,750 |
| 100 | Sonia Milagro Caraballo-Cartagena, MD | Psychiatry & Neurology, Neurology | Schaumburg, IL | $8,620 |
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records