CancerDrs

Radiation Oncology in Iowa

84 licensed radiation oncologists practicing in Iowa across 31 cities.

This page republishes public records from the federal NPI Registry, which every licensed U.S. healthcare provider is required to maintain. These are federal-agency records, not a directory we compile.

Source: NPI Registry · last checked

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Click a city to filter the 50 providers shown below. Iowa has providers in 31 cities total — search the full NPI Registry for cities not shown here.

NPI Registry records — Radiation Oncology in Iowa

27 of 50 shown have disclosed payments in CMS Open Payments (2024)

Showing 50 of 84 federal NPI records, alphabetical by last name. Contact details come directly from the NPI Registry — verify currency with the provider's office. Pharma / device payment disclosures from CMS Open Payments are shown where the physician appears in that federal database.

Mohamed Abdi, MD

1000 4th St Sw

Mason City, IA 50401 · (641) 428-6330

License: 46054 (IA)

NPI 1982162608 →

In 2024, $89 was disclosed to this physician across 4 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($89).

Largest single payer: Bayer HealthCare Pharmaceuticals Inc. ($41).

Itemized records on CMS Open Payments →

Nandita Agarwal, MD

200 Hawkins Dr, Department of Radiology

Iowa City, IA 52242 · (319) 356-3444

License: MD-50065 (IA)

NPI 1760832513 →

Awad Ahmed, MD

2121 Pease St Ste 101

Harlingen, TX 78550 · (956) 425-8845

License: 036150543 (IL)

NPI 1851702831 →

In 2024, $95 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($95).

Largest single payer: Okami Medical, Inc. ($51).

Itemized records on CMS Open Payments →

Olukemi Abike Alegi, MD

1270 Prince Avenue, Suite 102

Athens, GA 30606 · (706) 475-7055

NPI 1639866403 →

In 2024, $76 was disclosed to this physician across 4 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($76).

Largest single payer: Daiichi Sankyo Inc. ($27).

Itemized records on CMS Open Payments →

Bryan G Allen, MD, PHD

200 Hawkins Dr

Iowa City, IA 52242 · (319) 353-8836

License: 41041 (IA)

NPI 1689832081 →

In 2024, $174 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($174).

Largest single payer: Elekta, Inc. ($107).

Itemized records on CMS Open Payments →

August Anderson, MD

230 Nebraska St

Sioux City, IA 51101 · (209) 727-2072

License: 36929 (NE)

NPI 1093342859 →

In 2023, $186 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($186).

Itemized records on CMS Open Payments →

Carryn M Anderson, MD

200 Hawkins Dr, 01614 Pfpw

Iowa City, IA 52242 · (319) 353-8836

License: 37860 (IA)

NPI 1891987392 →

Samuel Dewayne Andrews, MD

200 Hawkins Drive

Iowa City, IA 52242 · (319) 356-2699

License: R-7952 (IA)

NPI 1851508337 →

In 2024, $28 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($28).

Largest single payer: Boston Scientific Corporation ($28).

Itemized records on CMS Open Payments →

Ajay Bhatnagar, MD

500 University Dr

Hershey, PA 17033 · (717) 531-8024

License: 425112 (PA)

NPI 1417161704 →

In 2024, $10,346 was disclosed to this physician across 39 transactions by pharmaceutical or medical-device companies.

Mostly stock or ownership interest ($6,900) and entertainment ($3,446).

Largest single payer: Bard Peripheral Vascular, Inc. ($7,459).

Itemized records on CMS Open Payments →

Truston Bodine, MD, PHD

411 Laurel St Ste C100

Des Moines, IA 50314 · (515) 643-8780

License: MD-51471 (IA)

NPI 1740787845 →

In 2023, $59 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($59).

Itemized records on CMS Open Payments →

John M Buatti, MD

200 Hawkins Dr

Iowa City, IA 52242 · (319) 356-2699

License: 33213 (IA)

NPI 1205829058 →

James Donald Byrne, MD, PHD

200 Hawkins Dr

Iowa City, IA 52242 · (319) 353-8836

License: MD-48641 (IA)

NPI 1386091148 →

Cameron Callaghan, MD

200 1st St Sw

Rochester, MN 55905 · (507) 284-2511

License: 71562 (MN)

NPI 1861933046 →

Nathaniel Camden, MD

500 South Paulina Street, Atrium Building, Ground Floor

Chicago, IL 60612 · (312) 942-5751

License: 125071455 (IL)

NPI 1629502208 →

In 2023, $118 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($118).

Itemized records on CMS Open Payments →

Joseph John Carmicheal, MD, PHD

1801 Hickman Rd

Des Moines, IA 50314 · (515) 282-2200

License: R-12427 (IA)

NPI 1871239921 →

Allan W Cass, MD

10855 Virginia St

Crown Point, IN 46307 · (888) 824-0200

License: 01092846A (IN)

NPI 1609889203 →

Joseph Caster, MD

111 S 11th St

Philadelphia, PA 19107 · (215) 955-6702

License: MD489790 (PA)

NPI 1033470604 →

In 2023, $213 was disclosed to this physician across 5 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($213).

Itemized records on CMS Open Payments →

Philip J Colletier, MD

411 Laurel St, Suite C100

Des Moines, IA 50314 · (515) 643-5168

License: 27802 (IA)

NPI 1760569412 →

In 2023, $15 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($15).

Itemized records on CMS Open Payments →

Candace Correa, MD

202 10th St Se

Cedar Rapids, IA 52403 · (319) 558-4876

License: 53967 (IA)

NPI 1952420671 →

Richard L Deming, MD

411 Laurel St Ste 3300

Des Moines, IA 50314 · (515) 643-8206

License: MD-27058 (IA)

NPI 1255418059 →

Mark William Dion, MD

200 Hawkins Dr

Iowa City, IA 52242 · (319) 356-2699

License: 25680 (IA)

NPI 1447252010 →

Moses Osemwingie Evbuomwan, MD

200 Hawkins Dr

Iowa City, IA 52242 · (319) 384-6135

License: R-12974 (IA)

NPI 1417698762 →

In 2023, $37 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($37).

Itemized records on CMS Open Payments →

Cassandra S Foens, MD

200 E Ridgeway Ave

Waterloo, IA 50702 · (319) 272-2800

License: 26633 (IA)

NPI 1285604470 →

Adam Daniel Gliniewicz, MD

411 Laurel St Ste C100

Des Moines, IA 50314 · (515) 643-8780

License: MD-48530 (IA)

NPI 1669835914 →

In 2024, $32 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($32).

Largest single payer: Dendreon Pharmaceuticals LLC ($32).

Itemized records on CMS Open Payments →

Katherine Leslie Griem, MD

6801 W 34th St

Berwyn, IL 60402 · (705) 484-0011

License: 036067292 (IL)

NPI 1679574735 →

Yoseful Haque, MD

8303 Dodge St

Omaha, NE 68114 · (402) 354-4104

License: 36409 (NE)

NPI 1235791641 →

In 2024, $175 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($175).

Largest single payer: Novocure Inc. ($149).

Itemized records on CMS Open Payments →

John George Hardie, MD

1111 Duff Avenue

Ames, IA 50010 · (515) 239-2411

License: 43526 (IA)

NPI 1073801148 →

In 2024, $56 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($56).

Largest single payer: Stryker Corporation ($56).

Itemized records on CMS Open Payments →

Albert Curtis Hass, MD

200 Hawkins Dr

Iowa City, IA 52242 · (319) 356-7609

License: 16384 (IA)

NPI 1235121062 →

Alex Herskovic, MD

200 Riverside Dr

Bourbonnais, IL 60914 · (815) 933-9660

License: 036143812 (IL)

NPI 1093069528 →

In 2023, $120 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($120).

Itemized records on CMS Open Payments →

Lyman Shane Hopkins, MD

1111 Duff Ave

Ames, IA 50010 · (515) 239-2411

License: 39404 (IA)

NPI 1144450578 →

In 2024, $30 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($30).

Largest single payer: Bayer HealthCare Pharmaceuticals Inc. ($30).

Itemized records on CMS Open Payments →

Robert John Isaak, MD, PHARMD

1221 Pleasant St, Suitet A100

Des Moines, IA 50309 · (515) 241-4330

License: M-17371 (ID)

NPI 1619197464 →

In 2023, $165 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($165).

Itemized records on CMS Open Payments →

Yousef Ismael, MD

1001 Pennsylvania Ave

Ottumwa, IA 52501 · (641) 684-2300

License: SP-0237 (IA)

NPI 1922657337 →

Vandana Jain, MD

200 E Ridgeway Ave

Waterloo, IA 50702 · (319) 272-2800

License: 29916 (IA)

NPI 1083684757 →

In 2023, $76 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($76).

Itemized records on CMS Open Payments →

Louis Charles Keiler, MD

202 10th St Se, Suite 195

Cedar Rapids, IA 52403 · (319) 558-4876

License: 57.009376 (OH)

NPI 1033322219 →

Nagendra Sai Koneru, MD

2160 S 1st Ave

Maywood, IL 60153 · (708) 216-9000

License: 036116453 (IL)

NPI 1508989260 →

In 2024, $6,822 was disclosed to this physician across 27 transactions by pharmaceutical or medical-device companies.

Mostly charitable contributions ($3,325) and consulting fees ($2,000).

Largest single payer: NOVARTIS PHARMACEUTICALS CORPORATION ($3,721).

Itemized records on CMS Open Payments →

Sami S Koro, MD

1410 N 4th St

Clinton, IA 52732 · (563) 244-3611

License: SP-0263 (IA)

NPI 1730822925 →

In 2023, $16 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($16).

Itemized records on CMS Open Payments →

Malgorzata Kozak, MD

200 Hawkins Dr

Iowa City, IA 52242 · (319) 353-8836

License: MD-47350 (IA)

NPI 1083091235 →

Thomas Charles Lally, MD

3123 Pasadena Ct, Unit 39

Dubuque, IA 52001 · (563) 556-2097

License: 20160 (IA)

NPI 1396873725 →

Yat Hong Lau, MD

230 Nebraska St

Sioux City, IA 51101 · (712) 252-9390

License: 36483 (IA)

NPI 1235234279 →

Kiwhoon Lee, MD

1401 W Central Park Ave

Davenport, IA 52804 · (563) 421-1901

License: 40849 (IA)

NPI 1568604916 →

In 2023, $20 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($20).

Itemized records on CMS Open Payments →

Wook H Lee, MD

701 10th Sest

Cedar Rapids, IA 52403 · (319) 398-6180

License: 36602 (IA)

NPI 1134135015 →

Wyman Yap Lee, MD

1315 W Agency Rd

West Burlington, IA 52655 · (319) 768-3900

License: 21679 (IA)

NPI 1659560589 →

Mark Dorian Lo Galbo, DO, MPH

200 Hawkins Dr

Iowa City, IA 52242 · (319) 384-6135

License: R-13702 (IA)

NPI 1962206961 →

John M Longo, MD

311 S Clark St

Carroll, IA 51401 · (712) 792-8265

License: 30135 (IA)

NPI 1104811835 →

Nicholas Basil Loudas

1575 Beam Ave

Maplewood, MN 55109 · (651) 232-7970

License: 78623 (MN)

NPI 1043605140 →

In 2023, $23 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($23).

Itemized records on CMS Open Payments →

Michael Marietta, MD

2880 Nw Stewart Pkwy Ste 100

Roseburg, OR 97471 · (541) 673-2267

License: MD206700 (OR)

NPI 1669823985 →

In 2023, $46 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($46).

Itemized records on CMS Open Payments →

Michael Marquardt, MD

701 10th St Se

Cedar Rapids, IA 52403 · (319) 398-6180

License: R-09964 (IA)

NPI 1639582810 →

In 2024, $48 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($48).

Largest single payer: Janssen Biotech, Inc. ($48).

Itemized records on CMS Open Payments →

John M Martens, MD

411 Laurel St, Suite C100

Des Moines, IA 50314 · (515) 643-5168

License: 34592 (IA)

NPI 1699852368 →

In 2024, $32 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.

Mostly entertainment ($32).

Largest single payer: Dendreon Pharmaceuticals LLC ($32).

Itemized records on CMS Open Payments →

Geovanne P Mauro, MD

1351 Kimberly Rd Ste 200

Bettendorf, IA 52722 · (563) 441-1998

License: SP-0310 (IA)

NPI 1265222814 →

Sarah Anne McAvoy, MD

411 Laurel St, Suite C-100

Des Moines, IA 50314 · (515) 643-8780

License: D86021 (MD)

NPI 1144549015 →

In 2024, $119 was disclosed to this physician across 5 transactions by pharmaceutical or medical-device companies.

Mostly entertainment ($119).

Largest single payer: Daiichi Sankyo Inc. ($53).

Itemized records on CMS Open Payments →

Showing 50 of 84. Search all on NPI Registry →

Payment totals shown for the latest published program year (2024). Presence of disclosed payments is not, on its own, a conflict of interest. Physicians dispute records directly with CMS (dispute process). How we show this.

Open Payments figures as displayed on . Corrections flow from the manufacturer through CMS and are adopted on our next refresh.

What this page is: a republication of public federal NPI Registry records, filtered to the radiation oncology taxonomy. It is not a directory we curate, and inclusion is automatic based on each provider's own NPI filing with CMS. Providers who believe their NPI record is inaccurate should update it directly with CMS at npiregistry.cms.hhs.gov; our next refresh adopts the corrected federal record.

Practice info disclaimer: Provider addresses and phone numbers come from the NPI Registry, which providers update at their discretion. Always call ahead to confirm the provider is currently accepting patients and is at the listed address.

Medical disclaimer: This page is not a quality ranking and does not constitute medical advice or endorsement. Choose a provider in consultation with your primary care physician or care team.

Source: NPI Registry (taxonomy: Radiation Oncology) · Last checked: 2026-04-20