NPPES file of Aug 9, 2026

Gregory Kirkpatrick

Hematology & Oncology Physician · Iowa City, IA

Gregory Kirkpatrick is a hematology & oncology physician with a practice address in Iowa City, Iowa, and NPI 1467078311, issued on Jun 17, 2020. Check the license (Iowa MD-55494, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1467078311
Name
Gregory Kirkpatrick
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
MD-55494 IA
Self-reported in NPPES; status is on the state search
Practice location
200 Hawkins Dr, Iowa City, IA 52242
Phone
(319) 356-4422
Enumerated
Jun 17, 2020
Record last updated
Oct 22, 2025
Fax
(319) 384-8492
Medicare enrollment
Enrolled (PECOS I20251113004550); accepts Medicare assignment
Medical or professional school
University Of Colorado School Of Medicine, Denver, 2020
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 200 Hawkins Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Helena Aaberg, MDAnesthesiology Physician1689301558
  2. Abdullah Abbasi, MDGastroenterology Physician1932944204
  3. Mary Jo Abbott, RPHPharmacist1841325875
  4. Francois Abboud, MDCardiovascular Disease Physician1598753113
  5. Abdalla Abdalla, MBBCHAnatomic Pathology & Clinical Pathology Physician1518859826
  6. Sameh AbdallaAnatomic Pathology & Clinical Pathology Physician1437902160

Verify Gregory Kirkpatrick in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIowa Board of Medicine
    Search for license MD-55494
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Iowa license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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97% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

25 Medicare Part D claims, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.

  1. Gregory Kirkpatrick25
  2. Specialty average877

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $24.11

1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Kirkpatrick$24.11
  2. Specialty average$7,481.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. State University OF IowaIowa City, IA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gregory Kirkpatrick among 90 hematology & oncology physician records in Iowa

Gregory Kirkpatrick is one of 90 hematology & oncology physician records with a practice address in Iowa. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 90% of them.

  • NPI issued2020 · 90% of these records are older, 6% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2020 · median 2003 among the 55 with a school on file
  • Record last updated2025 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Iowa

There are 90 hematology & oncology physician records in Iowa.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Daniel Berg, MDIowa City, IA 522421841289790
  2. Thomas Carlisle, MD PHDIowa City, IA 522421134116288
  3. Thomas Carter, MD PHDIowa City, IA 522421093703951
  4. Yuya Hagiwara, MDIowa City, IA 522421083811087
  5. Katarzyna Jamieson, MDIowa City, IA 522421376582205
  6. Mark Karwal, MDIowa City, IA 522421891770616
  7. Douglas Laux, MDIowa City, IA 522421295946218
  8. Brian Link, MDIowa City, IA 522421487635793

Common questions

What is Gregory Kirkpatrick's NPI number?

Gregory Kirkpatrick's National Provider Identifier (NPI) is 1467078311, issued on Jun 17, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Kirkpatrick located?

The NPPES record lists a practice address at 200 Hawkins Dr, Iowa City, IA, 52242. Phone: (319) 356-4422. Providers update this record themselves, so call before visiting.

How can I verify Gregory Kirkpatrick's license?

NPPES lists Iowa license number MD-55494, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gregory Kirkpatrick prescribe under Medicare Part D?

In 2024, Gregory Kirkpatrick had 25 Medicare Part D claims; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it 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.