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Gastroenterology (Internal Medicine)
In 2025, 12,972 Gastroenterology (Internal Medicine) providers had general (non-research) payments reported to CMS. Half received less than $636 for the year, and nine in ten received less than $4,448.
12,972providers with payments in 2025
$636median total for the year
$4,448nine in ten received less than
$5,779average total for the year
Providers with the largest 2025 totals
Ordered by 2025 general-payment totals as reported to CMS. A large total is not evidence of wrongdoing; context is below the table.
| Provider | Location | 2025 general | All payments 2019-2025 including research |
|---|---|---|---|
| Michael S Brown | Dallas, TX | $824,294.84 | $5,519,502.03 |
| Mazen Noureddin | Houston, TX | $782,701.65 | $1,519,594.29 |
| John Satterfield Fordtran | Dallas, TX | $723,004.71 | $9,871,509.35 |
| Glenn R Davis | Little Rock, AR | $680,778.21 | $2,695,724.03 |
| Naim Alkhouri | Westlake, OH | $606,750.42 | $1,988,196.39 |
| Nadege T Gunn | Waco, TX | $487,497.14 | $938,350.28 |
| Pierre Gholam | Cleveland, OH | $459,055.31 | $1,606,361.99 |
| Jennifer Lea Seminerio-Diehl | Orlando, FL | $457,529.80 | $1,151,875.86 |
| Anish A Patel | Fort Sam Houston, TX | $430,290.82 | $1,318,436.31 |
| Douglas Long Nguyen | Mission Viejo, CA | $406,319.88 | $2,038,523.81 |
| Gerald Dryden | Louisville, KY | $405,474.51 | $2,139,504.70 |
| Lukasz Kwapisz | Miami, FL | $400,418.63 | $1,202,556.99 |
| Bennett Roth | Los Angeles, CA | $372,266.41 | $2,848,927.77 |
| Sammy Saab | Los Angeles, CA | $367,988.02 | $1,917,306.46 |
| Sonal Kumar | New York, NY | $367,784.80 | $1,000,800.09 |
| Maya D Srivastava | Williamsville, NY | $365,400.47 | $1,835,037.87 |
| David L Carr Locke | New York, NY | $342,102.62 | $2,011,634.17 |
| Steven L Flamm | Chicago, IL | $339,295.04 | $1,290,142.84 |
| Kris V Kowdley | Seattle, WA | $331,375.16 | $1,402,977.85 |
| Amar S Naik | Des Plaines, IL | $323,562.12 | $1,222,050.06 |
| John B Kisiel | Rochester, MN | $305,434.18 | $855,797.46 |
| Parvez S Mantry | Dallas, TX | $302,443.12 | $958,424.77 |
| Udayakumar Navaneethan | Saint Petersburg, FL | $301,791.78 | $1,085,596.22 |
| David T Rubin | Chicago, IL | $299,672.08 | $1,653,322.83 |
| Conar P Fitton | Kenner, LA | $296,604.76 | $954,680.21 |
| Arthur A Kornbluth | New York, NY | $292,756.07 | $1,885,717.21 |
| George Salem | Oklahoma City, OK | $286,195.72 | $1,158,578.25 |
| Michael V Chiorean | Issaquah, WA | $279,277.98 | $1,489,484.98 |
| David M Poppers | New York, NY | $269,994.25 | $939,334.69 |
| Paul E Feuerstadt | Hamden, CT | $269,905.02 | $1,034,674.10 |
| Larry Edward Clark | Lynchburg, VA | $265,541.45 | $1,250,710.72 |
| Gregory S Sayuk | Saint Louis, MO | $265,465.14 | $1,071,264.99 |
| David MD Schwartz | Nashville, TN | $264,066.20 | $1,319,340.11 |
| Nitin K Gupta | Atlanta, GA | $263,750.90 | $1,071,299.92 |
| John Leung | Boston, MA | $260,758.97 | $693,412.08 |
| Stephen B Hanauer | Chicago, IL | $260,450.38 | $1,419,957.14 |
| Ziad H Younes | Germantown, TN | $252,324.21 | $1,147,056.70 |
| Robert A Shaffer | Birmingham, AL | $248,361.98 | $1,032,509.76 |
| Ronen Arai | Coral Springs, FL | $242,979.24 | $1,057,234.12 |
| Adam L Peyton | Allentown, PA | $241,499.24 | $985,177.34 |
| Dana J Lukin | New York, NY | $236,188.86 | $491,339.73 |
| Fred C Fowler | Charlotte, NC | $235,160.10 | $933,416.37 |
| Joanna Lopez | Miami, FL | $234,965.49 | $669,664.09 |
| Sadeea Qureshi Abbasi | Los Angeles, CA | $234,603.85 | $556,081.29 |
| Phani Ashok Attaluri | Olathe, KS | $233,764.03 | $957,071.77 |
| Apurva A Modi | Rockville, MD | $227,797.82 | $1,139,455.10 |
| Bryan G Sauer | Charlottesville, VA | $224,811.92 | $540,260.50 |
| Harry J Thomas | Austin, TX | $223,756.64 | $583,717.41 |
| Marcelo Kugelmas | Englewood, CO | $221,226.55 | $662,300.27 |
| Rahul S Nayak | Jonesboro, GA | $220,391.70 | $220,391.70 |
Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026).