Resources
#40 Drug: Xifaxan (Rifaximin)
Top prescriber in each state and DC based on Medicare Part D records.
Home / Data Tools / Part D Prescribers / Top 100 Drug Pages / Xifaxan (Rifaximin)
State-Level #1 Prescriber Table
Drug ranking is based on Medicare Part D drug spending in 2024 (Q1-Q4). Prescriber ranking is based on Medicare Part D prescriber data in 2023.
Top-100 rank metric for this drug: $1,158,129,706.00 total spending in 2024.
| State | Prescriber | NPI | Provider Type | Total Claims | Total Benes | Total Costs |
|---|---|---|---|---|---|---|
| Alabama | Phillip Henderson | 1144450792 | Gastroenterology | 217 | 35 | $753,377.21 |
| Alaska | Geronimo Sahagun | 1043292865 | Gastroenterology | 52 | 13 | $180,001.05 |
| Arizona | Gerard Quigley | 1881030781 | Nurse Practitioner | 179 | 35 | $603,143.25 |
| Arkansas | Lynn Frazier | 1619918505 | Nurse Practitioner | 263 | 38 | $894,875.77 |
| California | Edward Mena | 1881654226 | Undefined Physician type | 412 | 70 | $1,429,380.04 |
| Colorado | Camille Azar | 1265477046 | Gastroenterology | 186 | 38 | $614,854.40 |
| Connecticut | Michael Einstein | 1659339901 | Gastroenterology | 113 | 19 | $387,072.06 |
| Delaware | Stephanie Bey | 1649361825 | Physician Assistant | 133 | 19 | $461,484.63 |
| District of Columbia | Gilbert Daniel | 1467401182 | Internal Medicine | 47 | — | $46,424.59 |
| Florida | Miguel Malespin | 1568639326 | Gastroenterology | 542 | 86 | $1,833,419.02 |
| Georgia | Terence Frinks | 1285761833 | Family Practice | 125 | 14 | $225,405.41 |
| Hawaii | Michelle Delneo | 1003131863 | Gastroenterology | 43 | 18 | $126,435.17 |
| Idaho | James Mcmahon | 1992899066 | Physician Assistant | 71 | 13 | $235,001.87 |
| Illinois | Scott Cotler | 1225142730 | Gastroenterology | 205 | 30 | $679,120.81 |
| Indiana | Saurabh Agrawal | 1194990499 | Gastroenterology | 266 | 37 | $886,813.86 |
| Iowa | Blake Williams | 1245624626 | Nurse Practitioner | 193 | 24 | $601,118.74 |
| Kansas | Winston Dunn | 1801869656 | Gastroenterology | 256 | 44 | $833,502.41 |
| Kentucky | Macy Godman | 1326596644 | Physician Assistant | 345 | 61 | $1,201,816.31 |
| Louisiana | Shobha Joshi | 1346327822 | Gastroenterology | 135 | 19 | $443,887.91 |
| Maine | Joseph Harkins | 1912976911 | Physician Assistant | 141 | 30 | $470,171.85 |
| Maryland | Paul Thuluvath | 1720019474 | Gastroenterology | 123 | 14 | $408,107.83 |
| Massachusetts | Kevin Snow | 1447342183 | Internal Medicine | 225 | — | $309,393.40 |
| Michigan | Stuart Gordon | 1679641112 | Gastroenterology | 200 | 33 | $647,945.56 |
| Minnesota | Conrad Ross | 1093779852 | Physician Assistant | 207 | 40 | $755,337.21 |
| Mississippi | Laura Smart | 1467642801 | Gastroenterology | 131 | 25 | $422,846.17 |
| Missouri | Ahmad Ali | 1700048147 | Internal Medicine | 152 | 24 | $520,514.13 |
| Montana | Scott Falley | 1417971557 | Internal Medicine | 57 | — | $50,016.60 |
| Nebraska | Timothy Mccashland | 1417908989 | Gastroenterology | 129 | 18 | $403,570.80 |
| Nevada | Cassandre Oscar | 1366794877 | Nurse Practitioner | 211 | 39 | $724,377.30 |
| New Hampshire | Rachel Jeffers | 1639546039 | Nurse Practitioner | 83 | 14 | $302,280.76 |
| New Jersey | Mumtaz Niazi | 1528087509 | Internal Medicine | 290 | 58 | $1,003,289.44 |
| New Mexico | Jessie Surla | 1245656479 | Nurse Practitioner | 86 | 12 | $294,050.35 |
| New York | Irina Berlin | 1932169307 | Gastroenterology | 203 | 63 | $497,190.91 |
| North Carolina | Vikki Metheny | 1578690210 | Nurse Practitioner | 206 | 27 | $738,335.36 |
| North Dakota | Traci Craigmile | 1891062089 | Nurse Practitioner | 64 | — | $208,932.95 |
| Ohio | Dirk Juschka | 1497750137 | Geriatric Medicine | 130 | 17 | $211,362.06 |
| Oklahoma | Trushar Patel | 1639378599 | Gastroenterology | 165 | 22 | $543,870.92 |
| Oregon | Dekey Lhewa | 1518166438 | Gastroenterology | 87 | 18 | $285,353.72 |
| Pennsylvania | Jonathan Fenkel | 1811031222 | Gastroenterology | 238 | 29 | $800,514.08 |
| Rhode Island | Michael Klufas | 1205822277 | Internal Medicine | 81 | — | $149,740.29 |
| South Carolina | Ira Willner | 1396853255 | Gastroenterology | 202 | 31 | $711,934.68 |
| South Dakota | Chantel Holz | 1295042075 | Nurse Practitioner | 49 | — | $151,647.42 |
| Tennessee | Kimberly Akinyele | 1417476730 | Nurse Practitioner | 350 | 56 | $1,200,732.95 |
| Texas | Nina Olvera | 1851856926 | Family Practice | 2,614 | 405 | $8,775,028.82 |
| Utah | Jenny Hatch | 1871876060 | Physician Assistant | 130 | 20 | $440,683.50 |
| Vermont | Therese Dranginis | 1053375824 | Family Practice | 28 | — | $47,457.19 |
| Virginia | Mazen Madhoun | 1518127927 | Family Practice | 114 | 11 | $129,463.47 |
| Washington | Glen Lutchman | 1326208638 | Internal Medicine | 113 | 17 | $374,474.30 |
| West Virginia | Christopher Skaggs | 1598739476 | Internal Medicine | 99 | — | $89,144.12 |
| Wisconsin | Kristin Granlund | 1538322151 | Physician Assistant | 161 | 25 | $576,474.13 |
| Wyoming | Anna Knopp | 1245436609 | Nurse Practitioner | 31 | — | $84,658.51 |
Method Note
- Top 100 drugs are ranked by Tot_Spndng from CMS Part D drug spending data. Brand + generic pair is used for ranking and matching.
- For each state and DC, the #1 prescriber is selected by highest Tot_Drug_Cst for the same brand + generic pair, using the 2023 prescriber file.
- If a state has no matching record, values are shown as em dash.