NPPES file of Aug 9, 2026

Hematology & Oncology Physician in Iowa

90 NPPES records list hematology & oncology physician with a practice address in Iowa, 2.8 per 100,000 residents, the 47th highest rate of 51. Iowa City and Cedar Rapids have the most; each record links to the provider's NPI and the Iowa license search. Page 1 of 2.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RH0003X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Iowa City has the most, 42

  1. Iowa City42
  2. Cedar Rapids8
  3. Ames7
  4. Des Moines6
  5. Dubuque5

Hematology & Oncology Physician records in Iowa

  1. Anoop Aggarwal, M.D.Clinton, IA 527321902864739
  2. Raafat Alameddine, MDIowa City, IA 522421740842418
  3. Saramma Alexander, MDDes Moines, IA 503091780645135
  4. Kartik Anand, MDWest Des Moines, IA 502661164863841
  5. Daniel Berg, MDIowa City, IA 522421841289790
  6. Loren BrownDes Moines, IA 503141609837509
  7. Rasa Buntinas, MDCedar Rapids, IA 524031902880966
  8. Thomas Carlisle, MD PHDIowa City, IA 522421134116288
  9. Thomas Carter, MD PHDIowa City, IA 522421093703951
  10. Shobha Chitneni, M.D.Bettendorf, IA 527221184684987
  11. Mehndi Dandwani, MDIowa City, IA 522421952922155
  12. Raul Del Toro MijaresIowa City, IA 522421568151801
  13. Maroun El-Khoury, MDWest Burlington, IA 526551255357943
  14. Eric Engelman, D.O.Dubuque, IA 520011699970558
  15. Rodrigo Erlich, M.D.Mason City, IA 504011720039126
  16. Umar Farooq, MDIowa City, IA 522421336333673
  17. James Feeley, MDIowa City, IA 522451720069032
  18. Nicole Fleege, M.D.Iowa City, IA 522421609255991
  19. Susannah Friemel, M.D.Davenport, IA 528071356352116
  20. William Fusselman, MDCedar Rapids, IA 524031659356228
  21. Chirantan Ghosh, MDCedar Rapids, IA 524021013991082
  22. Austin Greco, M.D.Ames, IA 500101033645486
  23. Udhayvir Grewal, MDIowa City, IA 522421669036794
  24. Mark Guffy, M.D.Ames, IA 500101982693289
  25. Yuya Hagiwara, MDIowa City, IA 522421083811087
  26. Seema Harichand-Herdt, MDDes Moines, IA 503141801831870
  27. Penny Heinrich, MDIowa City, IA 522451083804546
  28. Mark Hermann, M.D.Dubuque, IA 520011639148810
  29. Christine Holm, M.D.Dubuque, IA 520011033169768
  30. Sakeer Hussain, M.D.Council Bluffs, IA 515031952423071
  31. Katarzyna Jamieson, MDIowa City, IA 522421376582205
  32. Chandana Javvaji, M.D.Sioux City, IA 511011821437716
  33. Brooke Jennings, MDIowa City, IA 522421740921998
  34. Becky Kaefring, RNIowa City, IA 522461881558484
  35. Stephen Kahanic, MDSioux City, IA 511011962474155
  36. Mark Karwal, MDIowa City, IA 522421891770616
  37. Gregory KirkpatrickIowa City, IA 522421467078311
  38. Sreenath Kodali, MDAmes, IA 500101376823567
  39. George Kovach, MDDavenport, IA 528041982663985
  40. Matthew KrollIowa City, IA 522421629630116
  41. Lawrence Kukla, M.D.Dubuque, IA 520011366493991
  42. Bradley Lair, MDDes Moines, IA 503091174584072
  43. Douglas Laux, MDIowa City, IA 522421295946218
  44. Brian Link, MDIowa City, IA 522421487635793
  45. Charles Link, MDDes Moines, IA 503091407810054
  46. Laurel Lyckholm, M.D.Iowa City, IA 522421164512711
  47. Donald Macfarlane, MDIowa City, IA 522421013905181
  48. Seth MaliskeIowa City, IA 522421962760488
  49. Joseph Merchant, M.D.Ames, IA 500101699765826
  50. John Michalak, M.D.Sioux City, IA 511011497727663

Source: CMS NPPES, primary taxonomy 207RH0003X: records by practice city and the list of records, file of Aug 9, 2026.

Iowa ranks 47 of 51 per resident

  1. Delaware3.0
  2. Utah2.9
  3. Alaska2.9
  4. Iowa2.8
  5. Nevada2.8
  6. Mississippi2.2
  7. 50 states and D.C.4.2

Source: CMS NPPES, primary taxonomy 207RH0003X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

74.4% of these records appear in a Medicare file, against 82.9% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Iowa74.4%
  2. United States82.9%

Hematology & Oncology Physician records in Iowa, measured

  • In a Medicare file67 of 90 · 74.4% here, 82.9% nationally
  • In the CMS Doctors and Clinicians file55 · 61.1% here, 71.3% nationally
  • Not updated in five years or more54 · 60.0% here, 54.3% nationally
  • Median graduation year2003 · the 55 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RH0003X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

90 NPPES records list hematology & oncology physician (207RH0003X) as their primary taxonomy with a practice address in Iowa: 2.8 per 100,000 residents against 4.2 nationally (50 states and D.C.). Iowa City has 42 of them (47%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Nevada88
  2. Rhode Island88
  3. District of Columbia81
  4. Utah99

States with a similar rate per 100,000

  1. Alaska2.9
  2. Delaware3.0
  3. Texas3.0
  4. New Mexico3.0

The largest states

  1. California1,583
  2. New York1,163
  3. Texas922
  4. Florida818
  5. Pennsylvania784

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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 Aug 9, 2026.