NPPES file of Aug 9, 2026

Iowa Medicare prescriber rankings

13,437 Iowa prescribers billed $2.4 billion in Medicare Part D drugs in 2024, the 33rd largest of 56 states and territories. Opioids were 3.15 of every 100 of those claims (CMS), below the national 3.52.

CMS Medicare Part D Prescribers, 2024; CMS NPPES · method · Verify with CMS →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).
  • Prescribers13,437
  • Part D drug cost$2.4 billion
  • Average per prescriber$181,930
  • Wrote an opioid (CMS)7,767 (57.81%)
  • Opioid claims per 100 claims (CMS)3.15

Reading the Iowa tables

Iowa's 13,437 prescribers wrote 18,689,967 Part D claims in 2024, about $181,930 in drug cost per prescriber. A high total usually reflects specialty practice, such as cancer, rheumatology or HIV care, or vaccines: 1 of the 50 largest totals are mostly vaccines, which pharmacies often bill under a standing order naming one clinician. These are billing tables, not quality ratings. PlainDoctor does not rank named prescribers by opioid share; the state's opioid figures above come from CMS's own totals.

The 50 highest Part D drug-cost totals

Prescriber (NPPES taxonomy)Drug costClaims
1Linda CadaretAdvanced Heart Failure and Transplant Cardiology Physician$15.8 million2,714
2Scott MurrayEmergency Medicine Physicianmostly vaccines, often billed by pharmacies under a standing order naming this clinician$11.8 million58,985
3Ghasoub HarbUrology Physician$11.0 million2,896
4Seth MaliskeHematology & Oncology Physician$8.6 million1,559
5Jonathon HenningsNurse Practitioner$8.2 million586
6Susannah FriemelHematology & Oncology Physician$8.2 million2,368
7Randolph RoughCardiovascular Disease Physician$8.1 million11,407
8Grerk SutamtewagulHematology & Oncology Physician$7.9 million984
9Alicia GerkePulmonary Disease Physician$7.5 million1,803
10Eric EngelmanHematology & Oncology Physician$7.0 million1,713
11Joshua LukenbillMedical Oncology Physician$6.9 million2,494
12Nibash BudhathokiHematology & Oncology Physician$6.7 million1,734
13Abdelaziz ElhaddadMedical Oncology Physician$6.6 million2,028
14Daniel BurokerMedical Oncology Physician$6.4 million3,183
15Donald WenderHematology & Oncology Physician$6.4 million2,187
16Sakeer HussainHematology & Oncology Physician$6.4 million1,867
17Thomas BurokerMedical Oncology Physician$5.9 million2,002
18Tara GraffMedical Oncology Physician$5.9 million2,257
19Bruce HughesNeurology Physician$5.7 million3,187
20Paulino AlvarezAdvanced Heart Failure and Transplant Cardiology Physician$5.7 million3,805
21Craig StarkCardiovascular Disease Physician$5.6 million18,275
22Joseph MerchantHematology & Oncology Physician$5.5 million5,210
23Mark KellermanUrology Physician$5.5 million2,132
24Venkatesh RudrapatnaHematology & Oncology Physician$5.4 million4,136
25Anoop AggarwalHematology & Oncology Physician$5.3 million3,242
26Bradley HiattMedical Oncology Physician$5.3 million2,747
27Wendy SandersNurse Practitioner$5.1 million7,270
28Mark JohnsonInternal Medicine Physician$5.1 million10,023
29Amy HughesMedical Oncology Physician$4.9 million1,388
30Heather HunemullerNurse Practitioner$4.9 million5,405
31Mark HermannHematology & Oncology Physician$4.8 million2,213
32Robert BehrensMedical Oncology Physician$4.7 million1,740
33Deborah WilburMedical Oncology Physician$4.7 million2,242
34Brian WaysonNurse Practitioner$4.7 million828
35Jitendrakumar GuptaPulmonary Disease Physician$4.6 million8,957
36Jaime BonnerFamily Nurse Practitioner$4.6 million1,049
37Melissa BattAdult Health Nurse Practitioner$4.4 million6,975
38Richard CaranoEndocrinology, Diabetes & Metabolism Physician$4.4 million10,638
39Hussain NaseriHematology & Oncology Physician$4.4 million1,573
40Jessie BakerNurse Practitioner$4.3 million4,808
41Christos KassiotisAdvanced Heart Failure and Transplant Cardiology Physician$4.2 million7,866
42Brian FreemanMedical Oncology Physician$4.2 million1,723
43Christian SchultheisMedical Oncology Physician$4.2 million1,740
44Alec SteilsNurse Practitioner$4.1 million8,651
45Angela SandreMedical Oncology Physician$4.1 million2,053
46Abbey ModlinNurse Practitioner$4.0 million7,627
47Sreenath KodaliHematology & Oncology Physician$4.0 million2,482
48Seema Harichand-HerdtHematology & Oncology Physician$4.0 million2,056
49Zeeshan JawaMedical Oncology Physician$3.9 million2,395
50William FusselmanHematology & Oncology Physician$3.9 million1,598

Source: CMS Medicare Part D Prescribers by Provider, 2024 (data.cms.gov), matched to CMS NPPES by NPI; vaccine share from the prescriber's top drugs in the CMS by-provider-and-drug file. Specialty is the taxonomy the clinician reported to NPPES.

Common questions

How many Medicare prescribers are in Iowa?

Iowa has 13,437 Medicare Part D prescribers who filed 18,689,967 claims totaling $2.4 billion in drug costs.

What is the opioid prescribing rate in Iowa?

Opioids were 3.15 of every 100 Medicare Part D claims written by Iowa prescribers in 2024, against 3.52 nationally (CMS). 7,767 of the state's 13,435 Part D prescribers in CMS's geography file (57.81%) wrote at least one opioid.

Checking a prescriber

Open the prescriber's record for the full NPI entry and prescribing detail, then confirm the license on the state board search. The Part D file covers Medicare Part D only; commercial, Medicaid, VA and cash prescriptions are not in it.

Prescriber rankings in other states

  1. Alabama
  2. Alaska
  3. American Samoa
  4. Arizona
  5. Arkansas
  6. California
  7. Colorado
  8. Connecticut
  9. Delaware
  10. District of Columbia
  11. Florida
  12. Georgia
  13. Guam
  14. Hawaii
  15. Idaho
  16. Illinois
  17. Indiana
  18. Iowa
  19. Kansas
  20. Kentucky
  21. Louisiana
  22. Maine
  23. Maryland
  24. Massachusetts
  25. Michigan
  26. Minnesota
  27. Mississippi
  28. Missouri
  29. Montana
  30. Nebraska
  31. Nevada
  32. New Hampshire
  33. New Jersey
  34. New Mexico
  35. New York
  36. North Carolina
  37. North Dakota
  38. Northern Mariana Islands
  39. Ohio
  40. Oklahoma
  41. Oregon
  42. Pennsylvania
  43. Puerto Rico
  44. Rhode Island
  45. South Carolina
  46. South Dakota
  47. Tennessee
  48. Texas
  49. Utah
  50. Vermont
  51. Virgin Islands
  52. Virginia
  53. Washington
  54. West Virginia
  55. Wisconsin
  56. Wyoming

National prescriber rankings · All rankings

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Medicare Part D data year 2024 (CMS).